Reported positions
Quarter-end holdings as filed
Explore the full published position list and its source filing. This record excludes the manager’s cash, shorts and non-13(f) assets.
Route One Investment Company, L.P.
A quarter-end snapshot. Filed up to 45 days later, so this page is not current holdings and never a complete portfolio. what a 13F is — and is not ↓ · methodology §13F ↗
Period
$2.3B
reported valuesum of disclosed values for 2026-03-31; 0 positions carry a NULL value and are excluded from the sum, surfaced here rather than folded away
19
positionsALL retained default holdings for this (filer, period), including NULL-value ones
4
new stakespositions with no comparable holding in the prior quarter (kind new), 2026-03-31
1
exitspositions absent from this quarter's filing after being held last quarter (kind exit), 2026-03-31 — inferred from absence, not a sale record
Position changes — into 2026-03-31
by shares · Δ value · filing link · how changes are classified §Positionposition matched across quarters by exact reported CUSIP over a registry gap — producer-reconciled identity, never a name match identity_reconciled_by_cusip | Changethe reported share count is unchanged across the pair, so the position reads as held rather than as a buy or a sell; only builds before this release inferred a direction from the reported value instead classified_by_value · "exit" = absent this quarter: disposed, delisted, under confidential treatment, or reported instead by an affiliated manager — the filing does not say which · change not classifiable: value undisclosed on one side of the quarter pair, or neither shares nor value can classify it · "no change" = the share count is identical in both quarters; the value moved only with price, so the row is mark-to-market and never an add or a trim (Add / New / Trim / Exit / No change) · "no prior" = this filer has no comparable holdings list for the previous quarter on record — a first filing under this registration, or a quarter reported inside an affiliated manager's filing — so the position is not called a new stake | Δ valuederived by Public Filings from the published aggregate; NULL means the source did not disclose a usable value — never zero | Δ shares | Prev value | Curr value | Prev shares | Curr shares | Flags |
|---|---|---|---|---|---|---|---|---|
POST HLDGS INC COMposition key pos:14799 · issuer key iss:1744 | trim | −$19.0M | −185,900 | $311M | $292M | 3,136,468 | 2,950,568 | |
GUIDEWIRE SOFTWARE INC COMposition key pos:11575 · issuer key iss:1060 | add | −$59.2M | +178,950 | $336M | $277M | 1,670,414 | 1,849,364 | |
AMAZON COM INC COMposition key pos:15054 · issuer key iss:159 | trim | −$47.7M | −105,800 | $263M | $215M | 1,138,000 | 1,032,200 | |
NEW YORK TIMES CO CL Aposition key pos:19101 · issuer key iss:1559 | trim | −$9.7M | −646,650 | $216M | $206M | 3,105,309 | 2,458,659 | |
SCHWAB CHARLES CORP COMposition key pos:17029 · issuer key iss:1938 | trim | −$25.6M | −156,100 | $184M | $158M | 1,838,343 | 1,682,243 | |
UNITEDHEALTH GROUP INC COMposition key pos:17013 · issuer key iss:2218 | add | −$23.3M | +25,575 | $167M | $144M | 507,300 | 532,875 | |
THERMO FISHER SCIENTIFIC INC COMposition key pos:16012 · issuer key iss:2132 | trim | −$25.6M | −4,900 | $153M | $127M | 263,600 | 258,700 | |
HERBALIFE LTD COM SHSposition key pos:18974 · issuer key iss:2529 | add | +$15.9M | +65,177 | $105M | $121M | 8,162,123 | 8,227,300 | |
KILROY RLTY CORP COMposition key pos:18981 · issuer key iss:1282 | add | +$4.5M | +1,114,191 | $110M | $114M | 2,935,372 | 4,049,563 | |
VISTA ENERGY S.A.B. DE C.V. SPONSORED ADSposition key pos:10993 · issuer key iss:2281 | add | +$42.0M | +192,500 | $49.8M | $91.8M | 1,024,200 | 1,216,700 | |
MERCADOLIBRE INC COMposition key pos:11377 · issuer key iss:1458 | new | +$77.4M | +44,785 | $0 | $77.4M | — | 44,785 | |
ESSEX PPTY TR INC COMposition key pos:17501 · issuer key iss:856 | trim | −$67.4M | −235,065 | $139M | $72.1M | 532,977 | 297,912 | |
SPDR S&P 500 ETF TR TR UNITposition key pos:12423 · issuer key iss:1897 PUT | new | +$65.0M | +100,000 | $0 | $65.0M | — | 100,000 | |
BBB FOODS INC CL A COMposition key pos:14648 · issuer key iss:2441 | add | +$7.8M | +144,100 | $46.3M | $54.1M | 1,385,196 | 1,529,296 | |
VEEVA SYS INC CL A COMposition key pos:14238 · issuer key iss:2249 | add | −$2.6M | +27,100 | $34.6M | $32.0M | 155,100 | 182,200 | |
GRUPO FINANCIERO GALICIA S.A SPONSORED ADRposition key sid:sec:prov:1063ba207c7ce99a467b0ac98b7d527b · issuer key cusip6:399909 | new | +$27.1M | +579,350 | $0 | $27.1M | — | 579,350 | |
BANCO MACRO SA SPON ADR Bposition key sid:sec:prov:ed86b2db3e03b786c79f298d91634c8e · issuer key cusip6:05961W | new | +$25.7M | +332,111 | $0 | $25.7M | — | 332,111 | |
| pos:16595 PUT | exit‡e | −$295M | −1,200,000 | $295M | $0 | 1,200,000 | — |
Mark-to-market only (no share change) · 2
Positions whose share count is identical in both quarters; the value changed with price, not with a decision.
Positionposition matched across quarters by exact reported CUSIP over a registry gap — producer-reconciled identity, never a name match identity_reconciled_by_cusip | Changethe reported share count is unchanged across the pair, so the position reads as held rather than as a buy or a sell; only builds before this release inferred a direction from the reported value instead classified_by_value · "exit" = absent this quarter: disposed, delisted, under confidential treatment, or reported instead by an affiliated manager — the filing does not say which · change not classifiable: value undisclosed on one side of the quarter pair, or neither shares nor value can classify it · "no change" = the share count is identical in both quarters; the value moved only with price, so the row is mark-to-market and never an add or a trim (Add / New / Trim / Exit / No change) · "no prior" = this filer has no comparable holdings list for the previous quarter on record — a first filing under this registration, or a quarter reported inside an affiliated manager's filing — so the position is not called a new stake | Δ valuederived by Public Filings from the published aggregate; NULL means the source did not disclose a usable value — never zero | Δ shares | Prev value | Curr value | Prev shares | Curr shares | Flags |
|---|---|---|---|---|---|---|---|---|
ALPHABET INC CAP STK CL Cposition key pos:18738 · issuer key iss:152 | no change | −$18.6M | 0 | $216M | $198M | 689,080 | 689,080 | |
PROCORE TECHNOLOGIES INC COMposition key pos:17796 · issuer key iss:1759 | no change | −$14.5M | 0 | $66.8M | $52.3M | 918,205 | 918,205 |
Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.
Changes derive from the aggregate's top-25 slices and keyable positions only; unkeyable holdings are counted in the registry, not differenced. methodology §13F ↗
Book shape
2026-03-31 · concentration · vs tracked median · tick = median- Top-25 concentration
- 100.0%above median 80.0%
- Concentration index
- 744 bpsabove median 446 bps
- Positions with value
- 19 / 19median book 97.5 positions
Concentration uses reported 13F long value, not total assets. The index is withheld when any position lacks a value. Medians are over the 8,748 tracked filers with a 2026-03-31 book; the index median over the 8,662 with a complete book.
null-value positions: 0holdings whose <value> did not parse — retained and counted, never zero-filled · top-N share ·§: 100.0% · HHI (bps) ·§: 744integer Herfindahl–Hirschman index in basis points over disclosed position values · QoQ moves: 20
Filing history
AVAILABLE QUARTERS| Period | Source |
|---|---|
| 2026-03-31 | EDGAR ↗ |
PLANNED sector rotation · Congress overlap · signals for this filer
Complete source filings on SEC EDGAR
The complete filing on EDGAR.
The position list above is served from the published Public Filings build — every position this filer reported for the selected quarter, as it reported it. This block is provenance, not a substitute: the filing itself is the record, and it is one click away. Serving this list is M2-CONTRACT §3, amended 2026-08-02; §3.1 keeps live EDGAR for filings newer than this build.
Open Route One Investment Company, L.P.'s 13F filings on SEC EDGAR ↗Notes on this data
Share changes
Compare consecutive quarters
Position changes retain the producer’s classification and comparability flags. Share counts and reported values describe different changes.
Coverage
A snapshot, not current holdings
Use the quarter selector to inspect available periods. Unknown values stay unknown and each table states its coverage.
ViewPrior quarter not yet availableThis build carries one quarter for this manager: 2026-03-31. Notable managers carry four published quarters, others two.
Reported positions — 2026-03-31
1–19 of 19 positions · $2.3B disclosed value over 19 rows · 0 undisclosed-value rowsEvery row below carries ticker not yet mapped — stated once here rather than repeated on every row.
| KindClassification is not joined into this reported-position view. Use the changed-positions view to compare the two published quarters. | TickerThis list carries reported issuer names and security identities, without a dated ticker mapping. Symbols are not inferred from names. | Issuera 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 | WeightShare of total reported value, calculated only when the full position list has disclosed values. This is 13F long value, not total assets. | Valuevalue undisclosed on the filing: retained and counted, excluded from sums, never shown as $0 | Shares | Position changeShare change is available in the separate comparison view; it is not joined into this position list. | Wt | CongressThe congressional transaction join is unavailable in this build. |
|---|---|---|---|---|---|---|---|---|
| — | POSTverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | POST HLDGS INC POST HLDGS INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $292M | 2,950,568 | — | 12.4% | — | |
| — | GWREverified 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 GUIDEWIRE SOFTWARE INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $277M | 1,849,364 | — | 11.8% | — | |
| — | AMZNverified 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 AMAZON COM INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $215M | 1,032,200 | — | 9.2% | — | |
| — | — | NEW YORK TIMES CO NEW YORK TIMES CO · CL A CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $206M | 2,458,659 | — | 8.8% | — | |
| — | GOOGverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | ALPHABET INC ALPHABET INC · CAP STK CL C CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $198M | 689,080 | — | 8.4% | — | |
| — | SCHWverified 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 SCHWAB CHARLES CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $158M | 1,682,243 | — | 6.7% | — | |
| — | UNHverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | UNITEDHEALTH GROUP INC UNITEDHEALTH GROUP INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $144M | 532,875 | — | 6.1% | — | |
| — | TMOverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | THERMO FISHER SCIENTIFIC INC THERMO FISHER SCIENTIFIC INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $127M | 258,700 | — | 5.4% | — | |
| — | HLFverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | HERBALIFE LTD HERBALIFE LTD · COM SHS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $121M | 8,227,300 | — | 5.2% | — | |
| — | — | KILROY RLTY CORP KILROY RLTY CORP · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $114M | 4,049,563 | — | 4.9% | — | |
| — | VISTverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | VISTA ENERGY S.A.B. DE C.V. VISTA ENERGY S.A.B. DE C.V. · SPONSORED ADS CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $91.8M | 1,216,700 | — | 3.9% | — | |
| — | MELIverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | MERCADOLIBRE INC MERCADOLIBRE INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $77.4M | 44,785 | — | 3.3% | — | |
| — | ESSverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | ESSEX PPTY TR INC ESSEX PPTY TR INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $72.1M | 297,912 | — | 3.1% | — | |
| — | SPYverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | SPDR S&P 500 ETF TR SPDR S&P 500 ETF TR · TR UNIT · PUT CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $65.0M | 100,000 | — | 2.8% | — | |
| — | TBBBverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | BBB FOODS INC BBB FOODS INC · CL A COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $54.1M | 1,529,296 | — | 2.3% | — | |
| — | PCORverified 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 PROCORE TECHNOLOGIES INC · COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $52.3M | 918,205 | — | 2.2% | — | |
| — | VEEVverified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) | VEEVA SYS INC VEEVA SYS INC · CL A COM CUSIP — quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $32.0M | 182,200 | — | 1.4% | — | |
| — | — | GRUPO FINANCIERO GALICIA S.A GRUPO FINANCIERO GALICIA S.A · SPONSORED ADR CUSIP 399909100 quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $27.1M | 579,350 | — | 1.2% | — | |
| — | — | BANCO MACRO SA BANCO MACRO SA · SPON ADR B CUSIP 05961W105 quarter ended 2026-03-31 filed filed 2026-05-15 +45d | $25.7M | 332,111 | — | 1.1% | — |
1–19 of 19 positions · page 1 of 1
every row this filer reported for the quarter, as it reported it — cross-filer de-duplication is applied to issuer totals elsewhere and never deletes a row here
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 been changed or closed before you ever see it, and is older still by however long ago that 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 with unit_basis carried on every record.
Affiliated managers may report the same position (otherManager), 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 (ARCHITECTURE.md §5.2 / M2-CONTRACT §5).