BAMCO INC /NY/
CIK 1017918 · 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
- $33.1B
- every reported holding for this filer and quarter, including ones with no disclosed value
- 326
- positions with no comparable holding in the prior quarter (kind new), 2026-03-31
- 36
- positions absent from this quarter's filing after being held last quarter (kind exit), 2026-03-31 — inferred from absence, not a sale record
- 37
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.
by shares · How classified ↗Period
| 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 | |
|---|---|---|---|---|---|---|---|---|
| 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:10357 · issuer key iss:1786 | ADD | −$928M | +6,034 | $5.4B | $4.4B | 11,927,475 | 11,933,509 |
| a reviewed mapping row for this filed issuer name and share class (never inferred from the name) | share class as filed: ORD · position key pos:16902 · issuer key iss:2033 | TRIM | −$121M | −1,277,746 | $1.7B | $1.6B | 17,987,505 | 16,709,759 |
| 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:16004 · issuer key iss:1161 | TRIM | −$126M | −56,358 | $1.6B | $1.5B | 2,755,747 | 2,699,389 |
| 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:10729 · issuer key iss:862 | ADD | −$48.0M | +1,449,903 | $1.0B | $987M | 5,147,550 | 6,597,453 |
| 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:10484 · issuer key iss:805 | ADD | −$126M | +1,704,659 | $1.1B | $937M | 4,212,957 | 5,917,616 |
| 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:16368 · issuer key iss:953 | TRIM | −$299M | −164,674 | $1.2B | $918M | 1,798,041 | 1,633,367 |
| 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:11830 · issuer key iss:936 | ADD | −$67.1M | +235,188 | $979M | $912M | 6,106,485 | 6,341,673 |
| 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:16294 · issuer key iss:721 | ADD | −$23.2M | +867,742 | $838M | $815M | 2,888,845 | 3,756,587 |
| 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:12676 · issuer key iss:445 | ADD | +$92.3M | +303,919 | $704M | $796M | 7,386,575 | 7,690,494 |
| 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:14108 · issuer key iss:1532 | ADD | −$59.9M | +892,954 | $776M | $716M | 12,519,892 | 13,412,846 |
| 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 | ADD | −$3.9M | +404,007 | $705M | $701M | 7,060,309 | 7,464,316 |
| 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:16916 · issuer key iss:1062 | ADD | −$3.9M | +246,564 | $697M | $693M | 1,781,201 | 2,027,765 |
| 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:17225 · issuer key iss:526 | TRIM | −$653M | −3,183,924 | $1.3B | $658M | 19,498,099 | 16,314,175 |
| 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:11847 · issuer key iss:1885 | ADD | +$8.4M | +233,605 | $639M | $647M | 4,809,928 | 5,043,533 |
| 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:11788 · issuer key iss:2269 | ADD | +$60.7M | +322,234 | $579M | $640M | 997,291 | 1,319,525 |
| 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 | ADD | +$191M | +2,429,960 | $368M | $560M | 2,288,270 | 4,718,230 |
| 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:15642 · issuer key iss:1334 | TRIM | −$48.2M | −69,185 | $557M | $509M | 2,988,943 | 2,919,758 |
| 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:16768 · issuer key iss:1903 | ADD | +$185M | +1,209,365 | $291M | $477M | 1,302,611 | 2,511,976 |
| 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:10951 · issuer key iss:2270 | ADD | +$9.8M | +1,400,031 | $326M | $336M | 7,966,037 | 9,366,068 |
| a reviewed mapping row for this filed issuer name and share class (never inferred from the name) | share class as filed: NAMEN AKT A · position key pos:18239 · issuer key iss:2262 | ADD | +$79.2M | +4,309,119 | $251M | $330M | 5,405,486 | 9,714,605 |
Flags: no row carries a flag.
1–20 of the 100 changes on this page
1–100 of 333 changes
Mark-to-market only (no share change) · 30
Positions whose share count is identical in both quarters; the value changed with price, not with a decision.
| 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 | |
|---|---|---|---|---|---|---|---|---|
| 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:12393 · issuer key iss:717 | NO CHANGE | +$204M | 0 | $681M | $886M | 59,959,449 | 59,959,449 |
| 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:11138 · issuer key iss:1519 | NO CHANGE | −$12.5M | 0 | $57.8M | $45.3M | 810,066 | 810,066 |
| 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:13520 · issuer key iss:736 | NO CHANGE | −$10.4M | 0 | $54.5M | $44.1M | 3,750,173 | 3,750,173 |
| — | share class as filed: ORDINARY SHARES · position key sid:sec:prov:6fe778741bc988cb0434288f6f503df1 · issuer key cusip6:L18268 | NO CHANGE | +$1.6M | 0 | $28.1M | $29.8M | 3,503,284 | 3,503,284 |
| — | share class as filed: COM CL A · position key sid:sec:prov:ce4d00cc8fa56a64dcb54596804ff373 · issuer key cusip6:36831E | NO CHANGE | −$3.3M | 0 | $24.9M | $21.6M | 2,200,349 | 2,200,349 |
| — | share class as filed: CL A · position key sid:sec:prov:8ff866e6198d2b38994e69793957c760 · issuer key cusip6:39813G | NO CHANGE | −$10.0M | 0 | $27.1M | $17.1M | 3,000,322 | 3,000,322 |
| 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:12770 · issuer key iss:629 | NO CHANGE | +$588K | 0 | $15.1M | $15.7M | 84,614 | 84,614 |
| — | share class as filed: COM · position key sid:sec:prov:9a3c7f4bc824684786887059fcdb1913 · issuer key cusip6:19247A | NO CHANGE | −$38.0K | 0 | $10.4M | $10.3M | 165,076 | 165,076 |
| — | share class as filed: COM · position key pos:10810 · issuer key iss:2400 | NO CHANGE | −$3.4M | 0 | $13.4M | $10.0M | 3,250,000 | 3,250,000 |
| 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:10185 · issuer key iss:399 | NO CHANGE | −$1.7M | 0 | $9.3M | $7.6M | 157,000 | 157,000 |
| 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:12939 · issuer key iss:309 | NO CHANGE | −$244K | 0 | $6.8M | $6.5M | 79,700 | 79,700 |
| 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 | +$851K | 0 | $5.5M | $6.3M | 6,349 | 6,349 |
| 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:14995 · issuer key iss:911 | NO CHANGE | −$620K | 0 | $4.9M | $4.3M | 110,200 | 110,200 |
| 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:13732 · issuer key iss:1785 | NO CHANGE | +$183K | 0 | $4.0M | $4.1M | 67,525 | 67,525 |
| 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:17657 · issuer key iss:2200 | NO CHANGE | +$750K | 0 | $2.7M | $3.5M | 125,000 | 125,000 |
| 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:16412 · issuer key iss:1930 | NO CHANGE | −$330K | 0 | $3.1M | $2.8M | 120,000 | 120,000 |
| 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:12598 · issuer key iss:1082 | NO CHANGE | +$110K | 0 | $1.6M | $1.7M | 20,000 | 20,000 |
| a reviewed mapping row for this filed issuer name and share class (never inferred from the name) | share class as filed: SPONSORED ADR · position key pos:15965 · issuer key iss:175 | NO CHANGE | +$86.7K | 0 | $1.2M | $1.3M | 5,600 | 5,600 |
| 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:15372 · issuer key iss:602 | NO CHANGE | −$195K | 0 | $1.4M | $1.2M | 124,363 | 124,363 |
| 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:11020 · issuer key iss:255 | NO CHANGE | −$36.7K | 0 | $755K | $718K | 1 | 1 |
| 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:11938 · issuer key iss:834 | NO CHANGE | −$26.4K | 0 | $703K | $677K | 800 | 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:10715 · issuer key iss:916 | NO CHANGE | −$30.4K | 0 | $688K | $658K | 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:17533 · issuer key iss:1509 | NO CHANGE | −$169K | 0 | $684K | $515K | 4,000 | 4,000 |
| 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:12416 · issuer key iss:398 | NO CHANGE | +$32.0K | 0 | $420K | $452K | 10,875 | 10,875 |
| 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:12631 · issuer key iss:843 | NO CHANGE | −$262K | 0 | $660K | $399K | 7,713 | 7,713 |
| 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:12159 · issuer key iss:1478 | NO CHANGE | −$49.0K | 0 | $410K | $361K | 4,000 | 4,000 |
| 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:17719 · issuer key iss:1175 | NO CHANGE | −$62.3K | 0 | $269K | $206K | 1,550 | 1,550 |
| 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:11478 · issuer key iss:1591 | NO CHANGE | −$12.8K | 0 | $116K | $103K | 600 | 600 |
| a reviewed mapping row for this filed issuer name and share class (never inferred from the name) | share class as filed: SPONSORED ADS · position key pos:15139 · issuer key iss:270 | NO CHANGE | −$4.9K | 0 | $73.9K | $69.0K | 776 | 776 |
| 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:14685 · issuer key iss:960 | NO CHANGE | −$1.4K | 0 | $3.3K | $2.0K | 19 | 19 |
Flags: no row carries a flag.
Holdings without a security ID are counted, not compared. Method ↗
Reported positions — 2026-03-31
323 issuers · 326 rowsViewThis 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 | Shares | Wt |
|---|---|---|---|---|---|
| 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 — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $4.4B | 11,933,509 | 13.4% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | ARCH CAP GROUP LTD · ORD CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $1.6B | 16,709,759 | 4.8% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | MSCI INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $1.5B | 2,699,389 | 4.4% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | GUIDEWIRE SOFTWARE INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $987M | 6,597,453 | 3.0% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | GARTNER INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $937M | 5,917,616 | 2.8% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | IDEXX LABS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $918M | 1,633,367 | 2.8% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | HYATT HOTELS CORP · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $912M | 6,341,673 | 2.8% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | FIGS INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $886M | 59,959,449 | 2.7% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | FACTSET RESH SYS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $815M | 3,756,587 | 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) | CHOICE HOTELS INTL INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $796M | 7,690,494 | 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) | RED ROCK RESORTS INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $716M | 13,412,846 | 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) | SCHWAB CHARLES CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $701M | 7,464,316 | 2.1% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | KINSALE CAP GROUP INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $693M | 2,027,765 | 2.1% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | COSTAR GROUP INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $658M | 16,314,175 | 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) | VAIL RESORTS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $647M | 5,043,533 | 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) | SPOTIFY TECHNOLOGY S A · SHS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $640M | 1,319,525 | 1.9% | |
| 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 — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $560M | 4,718,230 | 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) | NVIDIA CORPORATION · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $509M | 2,919,758 | 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) | VERISK ANALYTICS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $477M | 2,511,976 | 1.4% | |
| verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | BIRKENSTOCK HOLDING PLC · COM SHS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $336M | 9,366,068 | 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) | ON HLDG AG · NAMEN AKT A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $330M | 9,714,605 | 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) | VERTIV HOLDINGS CO · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $296M | 1,181,144 | 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) | SITEONE LANDSCAPE SUPPLY INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $274M | 2,059,076 | 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) | INTERACTIVE BROKERS GROUP IN · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $271M | 4,047,376 | 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) | AMAZON COM INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $270M | 1,294,654 | 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) | WELLTOWER INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $266M | 1,344,941 | 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) | EQUINIX INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $239M | 243,975 | 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) | PRIMERICA INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $215M | 860,026 | 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) | TAIWAN SEMICONDUCTOR MANUFAC · SPONSORED ADS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $215M | 636,267 | 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) | AMPHENOL CORP · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $210M | 1,659,690 | 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) | GDS HLDGS LTD · SPONSORED ADS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $185M | 4,597,246 | 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) | AIRBNB INC · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $182M | 1,441,221 | 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) | QUANTA SVCS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $179M | 325,840 | 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) | WYNN RESORTS LTD · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $176M | 1,736,856 | 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) | METTLER TOLEDO INTERNATIONAL · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $169M | 133,639 | 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) | SAMSARA INC · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $162M | 5,119,835 | 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) | BROADCOM INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $162M | 523,219 | 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) | HOULIHAN LOKEY INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $152M | 1,061,403 | 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) 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 | $150M | 521,595 | 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) | META PLATFORMS INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $147M | 256,700 | 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) | CBRE GROUP INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $146M | 1,074,451 | 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) | LIBERTY LIVE HOLDINGS INC · COM SHS SER C CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $144M | 1,525,473 | 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) | PROLOGIS INC. · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $141M | 1,065,747 | 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) | FORGENT POWER SOLUTIONS INC · COM SHS CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $137M | 4,674,583 | 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) | LOAR HOLDINGS INC · COM SHS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $136M | 2,366,299 | 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) | HEICO CORP | $135M | 587,383 | 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) | MORNINGSTAR INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $128M | 759,515 | 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) | TOLL BROTHERS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $127M | 932,031 | 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) | BROOKFIELD CORP · CL A LTD VT SH CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $118M | 2,905,510 | 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) | NOVANTA INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $108M | 915,083 | 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) | KARMAN HLDGS INC · COMMON STOCK CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $102M | 1,279,093 | 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) | ARGENX SE · SPONSORED ADR CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $101M | 138,648 | 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) | RBC BEARINGS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $98.6M | 181,481 | 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) | ENPRO INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $98.2M | 391,730 | 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) | CLOUDFLARE INC · CL A COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $94.4M | 457,324 | 0.3% | |
| — | HEARTFLOW INC · COM CUSIP 42238D107 quarter ended 2026-03-31 filed filed 2026-05-15 +45d ticker not yet mapped | $93.1M | 3,827,531 | 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) verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | LIBERTY MEDIA CORP DEL | $92.7M | 1,116,574 | 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) | DRAFTKINGS INC · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $91.2M | 4,218,766 | 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) | TRANSDIGM GROUP INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $91.2M | 78,664 | 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) | BRIGHT HORIZONS FAM SOL IN D · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $90.5M | 1,102,308 | 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 FITNESS MASTER ISSUER · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $89.3M | 1,200,064 | 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) | DIGITAL RLTY TR INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $87.4M | 484,763 | 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) | ADVANCED ENERGY INDS · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $86.7M | 268,725 | 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) | PROCORE TECHNOLOGIES INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $85.4M | 1,499,091 | 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) | COGNEX CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $85.3M | 1,740,166 | 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) | JBT MAREL CORPORATION · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $84.4M | 660,040 | 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) | GAMING & LEISURE P · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $81.9M | 1,846,273 | 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) | VENTAS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $81.6M | 998,339 | 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) | HILTON WORLDWIDE HLDGS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $80.7M | 265,363 | 0.2% | |
| — | DYNATRACE INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d ticker not yet mapped | $79.9M | 2,159,694 | 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) | ALIBABA GROUP HLDG LTD · SPONSORED ADS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $79.7M | 635,540 | 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) | ELI LILLY & CO · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $78.2M | 85,066 | 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) | CRH PLC · ORD CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $77.7M | 739,176 | 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) | MACERICH CO · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $77.2M | 4,084,693 | 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) | CREDICORP LTD · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $75.4M | 222,224 | 0.2% | |
| — | INDIE SEMICONDUCTOR INC · CLASS A COM CUSIP 45569U101 quarter ended 2026-03-31 filed filed 2026-05-15 +45d ticker not yet mapped | $75.1M | 23,337,826 | 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) | MERCADOLIBRE INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $74.0M | 42,793 | 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) | JONES LANG LASALLE INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $73.4M | 241,208 | 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) | PUBLIC STORAGE OPER CO · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $72.3M | 266,847 | 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) | SERVICETITAN INC · SHS CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $70.7M | 1,114,416 | 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) | LEGENCE CORP · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $70.3M | 1,245,682 | 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) | AAON INC · COM PAR $0.004 CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $69.9M | 844,377 | 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) | DATADOG INC · CL A COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $69.3M | 587,382 | 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) | MONOLITHIC PWR SYS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $68.9M | 62,994 | 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) | LAS VEGAS SANDS CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $66.1M | 1,226,430 | 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) | ROPER TECHNOLOGIES INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $65.9M | 186,159 | 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) | FLOOR & DECOR HLDGS INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $64.7M | 1,273,764 | 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) | REPLIGEN CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $64.6M | 548,346 | 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) | JEFFERIES FINANCIAL GROUP IN · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $63.2M | 1,530,228 | 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) | HEALTHEQUITY INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $62.7M | 750,025 | 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) | FAIR ISAAC CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $61.8M | 57,929 | 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) | SNOWFLAKE INC · COM SHS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $60.1M | 398,468 | 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) | THE BALDWIN INSURANCE GRP IN · COM CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $59.5M | 2,710,068 | 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) | BILLIONTOONE INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $58.5M | 741,485 | 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) | CAREDX INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $57.9M | 3,336,409 | 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) | CASELLA WASTE SYS INC · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $57.0M | 718,461 | 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) | DRIVEN BRANDS HLDGS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $56.7M | 4,500,196 | 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) | WAYSTAR HLDG CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $56.1M | 2,325,569 | 0.2% | |
| — | INTAPP INC · COM CUSIP 45827U109 quarter ended 2026-03-31 filed filed 2026-05-15 +45d ticker not yet mapped | $55.1M | 2,144,270 | 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) | CHEESECAKE FACTORY INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $54.8M | 1,000,037 | 0.2% |
1–20 of the 100 issuers on this page
1–100 of 323 issuers · page 1 of 4
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.- 63.8%below median 80.0%
- integer Herfindahl–Hirschman index in basis points over disclosed position values
- 320 bpsbelow median 446 bps
- holdings with no disclosed value (undisclosed, or unreadable on the filing) — kept and counted, never shown as zero
- 326 / 326median book 97.5 positions
363 quarter-over-quarter rows
Filing history
| 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 BAMCO INC /NY/'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.