CASTLEARK MANAGEMENT LLC

CIK 1106832 · EDGAR ↗

sum of disclosed values for 2026-03-31; 0 positions have no disclosed value and are left out of the sum, counted here rather than dropped: $3.0B
every reported holding for this filer and quarter, including ones with no disclosed value: 292
positions with no comparable holding in the prior quarter (kind new), 2026-03-31: 53
positions absent from this quarter's filing after being held last quarter (kind exit), 2026-03-31 — inferred from absence, not a sale record: 55

Quarter-end snapshot, filed up to 45 days later — not current holdings. What a 13F covers ↓

Changes · Quarter ended 2026-03-31. Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Position changes into quarter 2026-03-31
The reviewed ticker for the filed issuer name and share class, the same mapping the Reported positions table uses. Symbols are never inferred from names; — means no reviewed mapping.	position matched across quarters by exact reported CUSIP over a registry gap — never a name match	NEW / ADD / TRIM / EXIT by share count · NO CHANGE = same shares; the value moved with price, so never an ADD or a TRIM · EXIT = absent this quarter (disposed, delisted, confidential, or reported by an affiliate) — the filing does not say which · NO PRIOR = no comparable prior quarter on record (a first filing, or a quarter filed inside an affiliate's report), so not called a new stake · n/c = not classifiable: value undisclosed on one side of the pair, or neither shares nor value can classify it · †v: the reported share count is unchanged across the pair; this build's data classified the change from its reported value; builds from 2026-09-10 on read it as NO CHANGE	derived by Public Filings from the published data; “no value” means the source did not disclose a usable value — never zero	reported unit changed across the pair (SH↔PRN); the share delta is withheld rather than fabricated	Prev value	Curr value	Prev shares	Curr shares
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:15642` · issuer key `iss:1334`	TRIM	−$43.2M	−150,134	$263M	$219M	1,408,146	1,258,012
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CAP STK CL A · position key `pos:15142` · issuer key `iss:89`	ADD	+$753K	+36,380	$119M	$120M	381,639	418,019
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:11825` · issuer key `iss:1225`	TRIM	−$80.9M	−105,358	$179M	$97.8M	369,460	264,102
—	share class as filed: STATE STREET SPD · position key `pos:12578` · issuer key `iss:1602`	ADD	+$5.0M	+169,010	$85.2M	$90.2M	2,519,370	2,688,380
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13215` · issuer key `iss:144`	TRIM	−$16.4M	−37,030	$105M	$88.8M	387,041	350,011
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM NEW · position key `pos:10455` · issuer key `iss:1091`	TRIM	+$8.1M	−36,136	$63.8M	$71.9M	372,876	336,740
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CL A · position key `pos:11390` · issuer key `iss:720`	ADD	−$9.9M	+1,550	$80.8M	$70.9M	122,415	123,965
—	share class as filed: MTG-BKD SECS ETF · position key `sid:sec:prov:3e8440a4e05faf828ae027dc10359b61` · issuer key `iss:2482`	TRIM	−$10.4M	−217,740	$80.3M	$69.9M	1,705,540	1,487,800
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:15863` · issuer key `iss:1123`	TRIM	−$20.1M	−8,100	$87.7M	$67.6M	81,578	73,478
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12827` · issuer key `iss:323`	TRIM	−$8.5M	−3,176	$71.3M	$62.7M	205,880	202,704
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM SHS · position key `pos:11577` · issuer key `iss:167`	ADD	−$979K	+19,658	$53.9M	$52.9M	411,277	430,935
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14175` · issuer key `iss:95`	TRIM	−$57.8M	−226,288	$109M	$51.2M	472,149	245,861
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10600` · issuer key `iss:821`	ADD	+$13.6M	+64,822	$34.0M	$47.7M	277,328	342,150
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:16131` · issuer key `iss:1632`	TRIM	−$14.8M	−118,482	$62.2M	$47.4M	622,535	504,053
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM CL A · position key `pos:12848` · issuer key `iss:1921`	TRIM	−$13.3M	−16,652	$59.8M	$46.5M	170,478	153,826
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CL A · position key `pos:14206` · issuer key `iss:1193`	TRIM	−$12.5M	−10,438	$58.5M	$46.0M	102,451	92,013
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CL A SUB VTG SHS · position key `pos:18191` · issuer key `iss:1654`	TRIM	−$18.8M	−34,792	$55.6M	$36.8M	345,382	310,590
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:17386` · issuer key `iss:806`	TRIM	+$5.0M	−6,252	$31.2M	$36.2M	47,741	41,489
—	share class as filed: LG-TERM COR BD · position key `sid:sec:prov:7202fea486129d5c8347b02887ba22e3` · issuer key `iss:2482`	ADD	+$15.6M	+211,880	$17.9M	$33.5M	236,450	448,330
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13683` · issuer key `iss:1648`	ADD	−$9.7M	+33,336	$41.4M	$31.8M	270,420	303,756

Flags: no row carries a flag.

1–20 of the 100 changes on this page

Mark-to-market only (no share change) · 73

Positions whose share count is identical in both quarters; the value changed with price, not with a decision.

Positions held with no share change into quarter 2026-03-31
The reviewed ticker for the filed issuer name and share class, the same mapping the Reported positions table uses. Symbols are never inferred from names; — means no reviewed mapping.	position matched across quarters by exact reported CUSIP over a registry gap — never a name match	NEW / ADD / TRIM / EXIT by share count · NO CHANGE = same shares; the value moved with price, so never an ADD or a TRIM · EXIT = absent this quarter (disposed, delisted, confidential, or reported by an affiliate) — the filing does not say which · NO PRIOR = no comparable prior quarter on record (a first filing, or a quarter filed inside an affiliate's report), so not called a new stake · n/c = not classifiable: value undisclosed on one side of the pair, or neither shares nor value can classify it · †v: the reported share count is unchanged across the pair; this build's data classified the change from its reported value; builds from 2026-09-10 on read it as NO CHANGE	derived by Public Filings from the published data; “no value” means the source did not disclose a usable value — never zero	Prev value	Curr value	Prev shares	Curr shares
—	share class as filed: US TREAS BD ETF · position key `sid:sec:prov:b01efafd9c52181221003a3f82558332` · issuer key `cusip6:46429B`	NO CHANGE	−$383K	$76.7M	$76.3M	3,329,569	3,329,569
—	share class as filed: STATE STREET SPD · position key `sid:sec:prov:8b57560043266bcb6e19f900348f25bb` · issuer key `iss:2452`	NO CHANGE	−$133K	$39.1M	$38.9M	1,334,080	1,334,080
—	share class as filed: 10-20 YR TRS ETF · position key `pos:16971` · issuer key `iss:1013`	NO CHANGE	−$246K	$26.3M	$26.0M	258,432	258,432
—	share class as filed: MBS ETF · position key `pos:14874` · issuer key `iss:1013`	NO CHANGE	−$55.1K	$19.4M	$19.4M	204,235	204,235
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:17899` · issuer key `iss:1745`	NO CHANGE	+$552K	$13.9M	$14.5M	90,620	90,620
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13490` · issuer key `iss:1939`	NO CHANGE	+$1.5M	$12.6M	$14.1M	113,270	113,270
—	share class as filed: ISHS 5-10YR INVT · position key `pos:10953` · issuer key `iss:1013`	NO CHANGE	−$172K	$14.0M	$13.8M	259,994	259,994
—	share class as filed: STATE STREET SPD · position key `pos:10141` · issuer key `iss:1602`	NO CHANGE	+$469K	$9.9M	$10.3M	80,890	80,890
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13432` · issuer key `iss:411`	NO CHANGE	+$1.9M	$8.0M	$9.9M	13,920	13,920
—	share class as filed: STATE STREET HEA · position key `sid:sec:prov:2b5902c05a996d81adf5ce01e71326f4` · issuer key `iss:2454`	NO CHANGE	−$460K	$8.7M	$8.2M	56,130	56,130
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:16532` · issuer key `iss:812`	NO CHANGE	−$677K	$8.1M	$7.4M	99,280	99,280
—	share class as filed: SELECT STOXX EUR · position key `sid:sec:prov:bf88c0643d7dc790ff58066578bc3ed8` · issuer key `cusip6:84858T`	NO CHANGE	−$204K	$6.2M	$6.0M	147,000	147,000
—	share class as filed: RUS 1000 VAL ETF · position key `pos:17700` · issuer key `iss:1012`	NO CHANGE	+$80.1K	$5.1M	$5.1M	24,040	24,040
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM UT LTD PTN · position key `pos:13390` · issuer key `iss:656`	NO CHANGE	+$669K	$3.9M	$4.6M	238,240	238,240
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:15847` · issuer key `iss:759`	NO CHANGE	−$601K	$5.0M	$4.4M	380,230	380,230
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10715` · issuer key `iss:916`	NO CHANGE	−$196K	$4.4M	$4.2M	12,860	12,860
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14135` · issuer key `iss:1060`	NO CHANGE	+$693K	$3.2M	$3.8M	114,730	114,730
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM CL A · position key `pos:13899` · issuer key `iss:1563`	NO CHANGE	−$2.2M	$5.7M	$3.5M	50,330	50,330
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM CL A · position key `pos:16467` · issuer key `iss:480`	NO CHANGE	−$908K	$4.0M	$3.1M	17,630	17,630
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: UNIT SER 1 · position key `pos:11173` · issuer key `iss:995`	NO CHANGE	−$198K	$3.3M	$3.1M	5,320	5,320
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13340` · issuer key `iss:666`	NO CHANGE	+$459K	$2.5M	$3.0M	79,461	79,461
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12030` · issuer key `iss:525`	NO CHANGE	+$375K	$2.4M	$2.8M	2,800	2,800
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12684` · issuer key `iss:650`	NO CHANGE	+$318K	$2.4M	$2.7M	50,340	50,340
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CL A · position key `pos:17062` · issuer key `iss:1174`	NO CHANGE	+$724K	$1.6M	$2.4M	74,790	74,790
—	share class as filed: RUS MD CP GR ETF · position key `pos:18016` · issuer key `iss:1012`	NO CHANGE	−$141K	$2.2M	$2.0M	16,000	16,000
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: SHS · position key `pos:15350` · issuer key `iss:2111`	NO CHANGE	+$377K	$1.5M	$1.9M	7,826	7,826
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13722` · issuer key `iss:158`	NO CHANGE	+$445K	$1.3M	$1.8M	50,690	50,690
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:18087` · issuer key `iss:578`	NO CHANGE	+$2.7K	$1.7M	$1.7M	8,440	8,440
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12577` · issuer key `iss:1126`	NO CHANGE	+$63.2K	$1.6M	$1.7M	6,700	6,700
—	share class as filed: RUS 1000 GRW ETF · position key `pos:11528` · issuer key `iss:1012`	NO CHANGE	−$177K	$1.8M	$1.6M	3,770	3,770
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: UNIT LTD PARTN · position key `pos:10460` · issuer key `iss:1459`	NO CHANGE	+$308K	$1.3M	$1.6M	70,459	70,459
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COMMON STOCK · position key `pos:12231` · issuer key `iss:551`	NO CHANGE	+$147K	$1.2M	$1.3M	9,830	9,830
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM PAR $.01 · position key `pos:14207` · issuer key `iss:973`	NO CHANGE	−$82.0K	$1.4M	$1.3M	7,790	7,790
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM NEW · position key `pos:13903` · issuer key `iss:354`	NO CHANGE	+$35.0K	$1.1M	$1.1M	6,600	6,600
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:13590` · issuer key `iss:1189`	NO CHANGE	−$59.8K	$1.1M	$1.0M	1,760	1,760
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:15442` · issuer key `iss:356`	NO CHANGE	+$75.7K	$928K	$1.0M	3,400	3,400
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM UT REP LP · position key `pos:17694` · issuer key `iss:1732`	NO CHANGE	+$181K	$757K	$939K	14,450	14,450
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:17533` · issuer key `iss:1509`	NO CHANGE	−$294K	$1.2M	$895K	6,950	6,950
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14171` · issuer key `iss:1813`	NO CHANGE	−$132K	$1.0M	$892K	770	770
—	share class as filed: COM · position key `pos:13255` · issuer key `iss:2426`	NO CHANGE	+$254K	$560K	$814K	106,250	106,250
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:11849` · issuer key `iss:104`	NO CHANGE	−$180K	$990K	$809K	2,675	2,675
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12131` · issuer key `iss:1401`	NO CHANGE	+$34.6K	$632K	$667K	5,774	5,774
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: SHS · position key `pos:13415` · issuer key `iss:2242`	NO CHANGE	+$206K	$454K	$661K	12,210	12,210
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM NEW · position key `pos:16805` · issuer key `iss:997`	NO CHANGE	−$126K	$680K	$553K	1,200	1,200
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14992` · issuer key `iss:1485`	NO CHANGE	+$4.3K	$545K	$549K	3,800	3,800
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:18221` · issuer key `iss:1739`	NO CHANGE	−$100K	$644K	$544K	1,372	1,372
—	share class as filed: COM UNIT LTDPAR · position key `sid:sec:prov:ce29ae22e152cd83a649b6cec7e758aa` · issuer key `cusip6:90290N`	NO CHANGE	+$82.4K	$460K	$542K	19,990	19,990
—	share class as filed: UNIT LTD PARTN · position key `sid:sec:prov:cfd8e6b12a549d6edf90187f5c06812a` · issuer key `cusip6:371927`	NO CHANGE	+$66.9K	$468K	$535K	29,980	29,980
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12194` · issuer key `iss:1195`	NO CHANGE	+$173K	$354K	$528K	8,350	8,350
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM NEW CL A · position key `pos:12349` · issuer key `iss:93`	NO CHANGE	+$128K	$374K	$502K	10,370	10,370
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:17845` · issuer key `iss:455`	NO CHANGE	−$56.0K	$557K	$501K	2,960	2,960
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:12449` · issuer key `iss:621`	NO CHANGE	+$119K	$315K	$434K	3,000	3,000
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:16012` · issuer key `iss:1713`	NO CHANGE	+$24.9K	$389K	$414K	4,620	4,620
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:17674` · issuer key `iss:728`	NO CHANGE	+$67.3K	$289K	$356K	1,000	1,000
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10586` · issuer key `iss:1908`	NO CHANGE	−$5.0K	$331K	$326K	730	730
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10493` · issuer key `iss:471`	NO CHANGE	+$20.9K	$237K	$258K	3,397	3,397
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CL A · position key `pos:16738` · issuer key `iss:1252`	NO CHANGE	+$42.2K	$209K	$252K	860	860
—	share class as filed: MSCI CDA ETF · position key `sid:sec:prov:2ca9fa7939e913d15f6840dc7dfbd123` · issuer key `cusip6:464286`	NO CHANGE	+$3.2K	$198K	$201K	3,670	3,670
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:15592` · issuer key `iss:954`	NO CHANGE	+$10.8K	$190K	$200K	770	770
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:11070` · issuer key `iss:813`	NO CHANGE	−$12.2K	$201K	$188K	8,620	8,620
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:11393` · issuer key `iss:545`	NO CHANGE	+$8.3K	$153K	$161K	300	300
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10783` · issuer key `iss:1822`	NO CHANGE	−$28.3K	$169K	$141K	2,160	2,160
—	share class as filed: MSCI EMG MKT ETF · position key `pos:13160` · issuer key `iss:1012`	NO CHANGE	+$4.2K	$109K	$114K	2,000	2,000
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:15220` · issuer key `iss:1725`	NO CHANGE	−$7.8K	$120K	$112K	340	340
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14143` · issuer key `iss:748`	NO CHANGE	−$22.7K	$134K	$112K	2,000	2,000
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: CL B · position key `pos:13891` · issuer key `iss:1313`	NO CHANGE	−$21.8K	$127K	$106K	2,000	2,000
—	share class as filed: MSCI AUST ETF · position key `sid:sec:prov:cb5e7ff2563f749504b428e0411ec81f` · issuer key `cusip6:464286`	NO CHANGE	+$5.9K	$98.7K	$105K	3,770	3,770
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10790` · issuer key `iss:1444`	NO CHANGE	+$9.4K	$74.0K	$83.4K	2,971	2,971
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:18256` · issuer key `iss:1701`	NO CHANGE	−$5.9K	$64.5K	$58.6K	1,560	1,560
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:10940` · issuer key `iss:1517`	NO CHANGE	−$2.7K	$60.3K	$57.7K	580	580
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14952` · issuer key `iss:731`	NO CHANGE	+$4.8K	$35.7K	$40.5K	140	140
a reviewed mapping row for this filed issuer name and share class (never inferred from the name)	share class as filed: COM · position key `pos:14282` · issuer key `iss:1417`	NO CHANGE	−$7.2K	$40.4K	$33.2K	360	360
—	share class as filed: COM · position key `sid:sec:prov:e7f112277413db78c47072ed9dcfe559` · issuer key `cusip6:81211K`	NO CHANGE	+$446	$29.8K	$30.3K	720	720

Flags: no row carries a flag.

Holdings without a security ID are counted, not compared. Method ↗

Reported positions — 2026-03-31

275 issuers · 292 rows

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This build carries one quarter for this manager: 2026-03-31. Notable managers carry four published quarters, others two.

This list carries reported issuer names and security identities, without a dated ticker mapping. Symbols are not inferred from names.

a position composed from a base filing plus NEW-HOLDINGS amendments keeps every source row here; the composition's latest filed date is the one shown served from this build's published holdings (derived from the filer's own reported rows); every row resolves to its filing

Share of total reported value, calculated only when the full position list has disclosed values. This is 13F long value, not total assets.

value undisclosed on the filing: retained and counted, excluded from sums, never shown as $0

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

NVIDIA CORPORATION · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$219M

1,258,012

7.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ALPHABET INC

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for ALPHABET INC, as it reported them
ALPHABET INC · CAP STK CL A CUSIP — src ↗	$120M	418,019
ALPHABET INC · CAP STK CL C CUSIP — src ↗	$8.5M	29,610

$129M

447,629

4.3%

—

VANGUARD SCOTTSDALE FDS

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for VANGUARD SCOTTSDALE FDS, as it reported them
VANGUARD SCOTTSDALE FDS · MTG-BKD SECS ETF CUSIP 92206C771 src ↗	$69.9M	1,487,800
VANGUARD SCOTTSDALE FDS · LG-TERM COR BD CUSIP 92206C813 src ↗	$33.5M	448,330

ticker not yet mapped

$103M

1,936,130

3.4%

—

SPDR SERIES TRUST

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for SPDR SERIES TRUST, as it reported them
SPDR SERIES TRUST · STATE STREET SPD CUSIP — src ↗	$90.2M	2,688,380
SPDR SERIES TRUST · STATE STREET SPD CUSIP — src ↗	$10.3M	80,890

ticker not yet mapped

$101M

2,769,270

3.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MICROSOFT CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$97.8M

264,102

3.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

APPLE INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$88.8M

350,011

2.9%

—

ISHARES TR · US TREAS BD ETF CUSIP 46429B267
2026-03-31 filed 2026-05-15 +45d

src ↗

ticker not yet mapped

$76.3M

3,329,569

2.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LAM RESEARCH CORP · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$71.9M

336,740

2.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

META PLATFORMS INC · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$70.9M

123,965

2.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ELI LILLY & CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$67.6M

73,478

2.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BROADCOM INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$62.7M

202,704

2.1%

—

ISHARES TR

3 positions · 3 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for ISHARES TR, as it reported them
ISHARES TR · 10-20 YR TRS ETF CUSIP — src ↗	$26.0M	258,432
ISHARES TR · MBS ETF CUSIP — src ↗	$19.4M	204,235
ISHARES TR · ISHS 5-10YR INVT CUSIP — src ↗	$13.8M	259,994

ticker not yet mapped

$59.3M

722,661

2.0%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ARISTA NETWORKS INC · COM SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$52.9M

430,935

1.8%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

AMAZON COM INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$51.2M

245,861

1.7%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GILEAD SCIENCES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$47.7M

342,150

1.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SCHWAB CHARLES CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$47.4M

504,053

1.6%

—

SPDR SERIES TRUST

2 positions · 2 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for SPDR SERIES TRUST, as it reported them
SPDR SERIES TRUST · STATE STREET SPD CUSIP 78468R101 src ↗	$38.9M	1,334,080
SPDR SERIES TRUST · STATE STREET SPD CUSIP 78468R556 src ↗	$8.2M	45,340

ticker not yet mapped

$47.2M

1,379,420

1.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VISA INC · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$46.5M

153,826

1.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MASTERCARD INCORPORATED · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$46.0M

92,013

1.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SHOPIFY INC · CL A SUB VTG SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$36.8M

310,590

1.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GE VERNOVA INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$36.2M

41,489

1.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SERVICENOW INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$31.8M

303,756

1.1%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TAPESTRY INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.9M

204,470

1.0%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

DIAMONDBACK ENERGY INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.7M

145,020

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

CHEVRON CORPORATION · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.3M

136,550

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VERTIV HOLDINGS CO · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$28.2M

112,363

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ULTA BEAUTY INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$26.5M

50,629

0.9%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ANALOG DEVICES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$24.8M

77,908

0.8%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BAKER HUGHES COMPANY · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$23.6M

387,190

0.8%

—

ISHARES TR

9 positions · 9 reported rows

Rows CASTLEARK MANAGEMENT LLC reported for ISHARES TR, as it reported them
ISHARES TR · 20 YR TR BD ETF CUSIP — src ↗	$11.9M	137,270
ISHARES TR · RUS 1000 VAL ETF CUSIP — src ↗	$5.1M	24,040
ISHARES TR · RUS MD CP GR ETF CUSIP — src ↗	$2.0M	16,000
ISHARES TR · RUS 1000 GRW ETF CUSIP — src ↗	$1.6M	3,770
ISHARES TR · IBOXX INV CP ETF CUSIP — src ↗	$1.1M	10,060
ISHARES TR · EUROPE ETF CUSIP — src ↗	$822K	12,100
ISHARES TR · RUS 2000 GRW ETF CUSIP — src ↗	$377K	1,200
ISHARES TR · RUS 2000 VAL ETF CUSIP — src ↗	$201K	1,060
ISHARES TR · MSCI EMG MKT ETF CUSIP — src ↗	$114K	2,000

ticker not yet mapped

$23.3M

207,500

0.8%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BOOKING HOLDINGS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$20.6M

4,896

0.7%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SNOWFLAKE INC · COM SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$20.5M

136,044

0.7%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

RANGE RES CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$18.5M

410,520

0.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ADVANCED MICRO DEVICES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$18.1M

88,954

0.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

CF INDUSTRIES HOLD · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$16.8M

129,150

0.6%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

DIGITALOCEAN HLDGS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$15.6M

182,249

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ASCENDIS PHARMA A/S · SPONSORED ADR CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$15.5M

67,616

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ADVANCED ENERGY INDS · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$15.0M

46,623

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

JPMORGAN CHASE & CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.9M

50,525

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GUARDANT HEALTH INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.8M

160,283

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TESLA INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.6M

39,180

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TJX COS INC NEW · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.5M

90,620

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

WALMART INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$14.1M

113,270

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TAIWAN SEMICONDUCTOR MANUFAC · SPONSORED ADS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.9M

41,210

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

NEXTPOWER INC · CLASS A COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.8M

114,074

0.5%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

PERMIAN RESOURCES CORP · CLASS A COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.5M

630,980

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

FIRSTCASH HOLDINGS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.3M

70,730

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MICROCHIP TECHNOLOGY INC. · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$13.2M

204,874

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VIAVI SOLUTIONS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$12.6M

378,597

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

EQT CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$12.3M

193,845

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

UBER TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$12.2M

169,876

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

DYCOM INDS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$11.0M

32,506

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

EXXON MOBIL CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$10.9M

64,460

0.4%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BRIGHTSPRING HEALTH SVCS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$10.5M

247,200

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

HELIOS TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$10.4M

160,409

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

CATERPILLAR INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.9M

13,920

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LIGAND PHARMACEUTICALS INC · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.7M

48,696

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

WILLIAMS COS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.6M

131,770

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ELEMENT SOLUTIONS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.4M

273,884

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TECHNIPFMC PLC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.3M

135,176

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TOWER SEMICONDUCTOR LTD · SHS NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.3M

53,240

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

VSE CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.2M

50,086

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

JAZZ PHARMACEUTICALS PLC · SHS USD CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.2M

48,740

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

FIVE BELOW INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.2M

40,110

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

EVERCORE INC · CLASS A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.1M

30,416

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TUTOR PERINI CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$9.0M

116,440

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TTM TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.9M

91,230

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GARRETT MOTION INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.9M

488,000

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

HASBRO INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.9M

94,701

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KINIKSA PHARMACEUTICALS INTL · ORD SHS CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.7M

181,512

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GE AEROSPACE · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.7M

30,680

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

STERLING INFRASTRUCTURE INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.6M

21,200

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SOLSTICE ADVANCED MATLS INC · COM SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.6M

113,050

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ELANCO ANIMAL HEALTH INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.5M

355,950

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LATTICE SEMICONDUCTOR CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.5M

91,639

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SPX TECHNOLOGIES INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.3M

41,567

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SEMTECH CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.3M

107,758

0.3%

—

SELECT SECTOR SPDR TR · STATE STREET HEA CUSIP 81369Y209
2026-03-31 filed 2026-05-15 +45d

src ↗

ticker not yet mapped

$8.2M

56,130

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MODINE MFG CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.2M

37,850

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BROOKDALE SR LIVING INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.2M

598,454

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KRYSTAL BIOTECH INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.2M

31,630

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

API GROUP CORP · COM STK CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.1M

200,263

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BORGWARNER INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.1M

148,506

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ASSOCIATED BANC-CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.1M

311,423

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

PLANET LABS PBC · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$8.0M

285,650

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

ARCOSA INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.9M

74,650

0.3%

—

PHIBRO ANIMAL HEALTH CORP · CL A COM CUSIP 71742Q106
2026-03-31 filed 2026-05-15 +45d

src ↗

ticker not yet mapped

$7.9M

142,900

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

WESCO INTL INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.8M

28,397

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KRATOS DEFENSE & SEC SOLUTIO · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.7M

109,634

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

AUTODESK INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.6M

31,940

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

LIBERTY ENERGY INC · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.6M

264,789

0.3%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

STIFEL FINL CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.5M

102,010

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

BLOOM ENERGY CORP · COM CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.5M

55,045

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

GENERAL MTRS CO · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.4M

99,280

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

MOODYS CORP · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.4M

16,900

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

QXO INC · COM NEW CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.3M

375,807

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KNIGHT-SWIFT TRANSN HLDGS IN · CL A CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.3M

126,030

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

TOLL BROTHERS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.0M

51,403

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

KULICKE & SOFFA INDS INC · COM CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.0M

106,380

0.2%

verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)

SPDR GOLD TR · GOLD SHS CUSIP —
2026-03-31 filed 2026-05-15 +45d

src ↗

$7.0M

16,235

0.2%

1–20 of the 100 issuers on this page

One line per issuer, largest first — open a line for its reported rows. Grouping ↗

Book shape

Tick = median of the 8,748 tracked filers with a 2026-03-31 book (the index median: the 8,662 with a complete book). Concentration uses reported 13F long value, not total assets; the index is withheld when any position lacks a value.

share of the period's disclosed value held in the top-N positions; denominator is reported 13F value, not total assets: 52.6%below median 80.0%
integer Herfindahl–Hirschman index in basis points over disclosed position values: 170 bpsbelow median 446 bps
holdings with no disclosed value (undisclosed, or unreadable on the filing) — kept and counted, never shown as zero: 292 / 292median book 97.5 positions

347 quarter-over-quarter rows

Filing history

Available filing periods
Period	Source
2026-03-31	EDGAR ↗

Complete source filings on SEC EDGAR

The filing on EDGAR is the record, including any filed after this build.

Open CASTLEARK MANAGEMENT LLC's 13F filings on SEC EDGAR ↗

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings: a position may have changed or closed since the quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars; each record notes its original unit.

Affiliated managers may report the same position, so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice.

Changes · Q1 2026Quarter ended 2026-03-31. Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Reported positions — 2026-03-31

Book shape

Filing history

Changes · Quarter ended 2026-03-31. Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.