Who owns Exact Sciences (EXAS)
Which tracked institutional funds hold EXAS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See EXAS company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
336 tracked funds added or opened EXAS while 127 trimmed or exited it between 2025-Q3 and 2025-Q4 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
EXAS’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.2% of theirs — a 0.2pp gap the other way — the median holder sizes EXAS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in EXAS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, we do not read how tracked institutions changed their EXAS positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in EXAS between the 2025-Q3 and 2025-Q4 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 125
- HBK INVESTMENTS L P$777M
- Pentwater Capital Management LP$736M
- FARALLON CAPITAL MANAGEMENT LLC$650M
- Davidson Kempner Capital Management LP$430M
- Beryl Capital Management LLC$254M
- Qube Research & Technologies Ltd$205M
Full exits 62
- WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$140M
- SCHRODER INVESTMENT MANAGEMENT GROUP$65M
- ARMISTICE CAPITAL, LLC$56M
- Deep Track Capital, LP$55M
- BAILLIE GIFFORD & CO$42M
- AXA Investment Managers S.A.$29M
Largest adds
- BlackRock, Inc.$959M
- VANGUARD GROUP INC$794M
- Balyasny Asset Management L.P.$369M
- NORGES BANK$302M
- UBS Group AG$270M
- MORGAN STANLEY$255M
Largest trims
- FMR LLC$903M
- Capital World Investors$785M
- CITADEL ADVISORS LLC$207M
- Holocene Advisors, LP$148M
- WELLINGTON MANAGEMENT GROUP LLP$146M
- ARK Investment Management LLC$120M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| VANGUARD GROUP INC trimmed | 17,415,415 | $1.8B | 11.2% | 2025-Q4 |
| BlackRock, Inc. added | 15,134,118 | $1.5B | 9.8% | 2025-Q4 |
| HBK INVESTMENTS L P new | 7,646,637 | $777M | 4.9% | 2025-Q4 |
| Pentwater Capital Management LP new | 7,250,000 | $736M | 4.7% | 2025-Q4 |
| FARALLON CAPITAL MANAGEMENT LLC new | 6,405,000 | $650M | 4.1% | 2025-Q4 |
| Davidson Kempner Capital Management LP new | 4,230,749 | $430M | 2.7% | 2025-Q4 |
| STATE STREET CORP trimmed | 4,183,039 | $425M | 2.7% | 2025-Q4 |
| Balyasny Asset Management L.P. added | 4,089,977 | $415M | 2.6% | 2025-Q4 |
| MILLENNIUM MANAGEMENT LLC added | 3,441,516 | $350M | 2.2% | 2025-Q4 |
| GEODE CAPITAL MANAGEMENT, LLC added | 3,331,580 | $338M | 2.2% | 2025-Q4 |
| MORGAN STANLEY added | 3,250,329 | $330M | 2.1% | 2025-Q4 |
| UBS Group AG added | 2,989,407 | $304M | 1.9% | 2025-Q4 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 2,723,434 | $277M | 1.8% | 2025-Q4 |
| Beryl Capital Management LLC new | 2,498,196 | $254M | 1.6% | 2025-Q4 |
| AQR CAPITAL MANAGEMENT LLC added | 2,229,360 | $226M | 1.4% | 2025-Q4 |
| Qube Research & Technologies Ltd new | 2,016,238 | $205M | 1.3% | 2025-Q4 |
| TUDOR INVESTMENT CORP ET AL added | 1,978,628 | $201M | 1.3% | 2025-Q4 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) new | 1,779,212 | $181M | 1.1% | 2025-Q4 |
| Glazer Capital, LLC new | 1,725,000 | $175M | 1.1% | 2025-Q4 |
| AMERIPRISE FINANCIAL INC trimmed | 1,717,958 | $174M | 1.1% | 2025-Q4 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,603,705 | $163M | 1.0% | 2025-Q4 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,591,656 | $162M | 1.0% | 2025-Q4 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,532,235 | $156M | 1.0% | 2025-Q4 |
| Woodline Partners LP trimmed | 1,496,795 | $152M | 1.0% | 2025-Q4 |
| FIL Ltd added | 1,491,000 | $151M | 1.0% | 2025-Q4 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 1,434,993 | $146M | 0.9% | 2025-Q4 |
| JANE STREET GROUP, LLC added | 1,428,305 | $145M | 0.9% | 2025-Q4 |
| GOLDMAN SACHS GROUP INC added | 1,410,459 | $143M | 0.9% | 2025-Q4 |
| Champlain Investment Partners, LLC trimmed | 1,352,745 | $137M | 0.9% | 2025-Q4 |
| Verition Fund Management LLC added | 1,234,379 | $125M | 0.8% | 2025-Q4 |
| HighTower Advisors, LLC trimmed | 1,227,761 | $125M | 0.8% | 2025-Q4 |
| PERCEPTIVE ADVISORS LLC added | 1,200,487 | $122M | 0.8% | 2025-Q4 |
| FMR LLC trimmed | 1,154,568 | $117M | 0.7% | 2025-Q4 |
| Hudson Bay Capital Management LP new | 1,115,996 | $113M | 0.7% | 2025-Q4 |
| NORTHERN TRUST CORP trimmed | 1,091,519 | $111M | 0.7% | 2025-Q4 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 1,067,342 | $108M | 0.7% | 2025-Q4 |
| KRYGER CAPITAL Ltd new | 1,009,312 | $103M | 0.7% | 2025-Q4 |
| Capital World Investors trimmed | 968,232 | $98M | 0.6% | 2025-Q4 |
| Man Group plc added | 965,093 | $98M | 0.6% | 2025-Q4 |
| BAMCO INC /NY/ trimmed | 954,547 | $97M | 0.6% | 2025-Q4 |
| TIG Advisors, LLC new | 883,843 | $90M | 0.6% | 2025-Q4 |
| LMR Partners LLP added | 881,340 | $90M | 0.6% | 2025-Q4 |
| SOROS FUND MANAGEMENT LLC added | 864,009 | $88M | 0.6% | 2025-Q4 |
| Weiss Asset Management LP new | 848,700 | $86M | 0.5% | 2025-Q4 |
| BANK OF AMERICA CORP /DE/ trimmed | 844,226 | $86M | 0.5% | 2025-Q4 |
| ALLIANCEBERNSTEIN L.P. added | 823,039 | $84M | 0.5% | 2025-Q4 |
| Nuveen, LLC trimmed | 813,252 | $83M | 0.5% | 2025-Q4 |
| MACKENZIE FINANCIAL CORP trimmed | 812,115 | $83M | 0.5% | 2025-Q4 |
| NEUBERGER BERMAN GROUP LLC added | 807,545 | $82M | 0.5% | 2025-Q4 |
| ALPINE ASSOCIATES MANAGEMENT INC. new | 805,500 | $82M | 0.5% | 2025-Q4 |
| FIRST TRUST ADVISORS LP trimmed | 802,119 | $81M | 0.5% | 2025-Q4 |
| Squarepoint Ops LLC added | 793,505 | $81M | 0.5% | 2025-Q4 |
| Westchester Capital Management, LLC new | 751,561 | $76M | 0.5% | 2025-Q4 |
| Magnetar Financial LLC added | 708,272 | $72M | 0.5% | 2025-Q4 |
| Alberta Investment Management Corp new | 688,000 | $70M | 0.4% | 2025-Q4 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 685,252 | $70M | 0.4% | 2025-Q4 |
| JPMORGAN CHASE & CO trimmed | 674,621 | $69M | 0.4% | 2025-Q4 |
| Absolute Gestao de Investimentos Ltda. new | 651,423 | $66M | 0.4% | 2025-Q4 |
| C WorldWide Group Holding A/S trimmed | 625,123 | $63M | 0.4% | 2025-Q4 |
| Bank of New York Mellon Corp trimmed | 620,376 | $63M | 0.4% | 2025-Q4 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 615,940 | $63M | 0.4% | 2025-Q4 |
| Quinn Opportunity Partners LLC new | 606,000 | $62M | 0.4% | 2025-Q4 |
| Rock Springs Capital Management LP added | 601,800 | $61M | 0.4% | 2025-Q4 |
| Schonfeld Strategic Advisors LLC added | 592,847 | $60M | 0.4% | 2025-Q4 |
| MARSHALL WACE, LLP added | 581,573 | $59M | 0.4% | 2025-Q4 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 573,185 | $58M | 0.4% | 2025-Q4 |
| Spyglass Capital Management LLC trimmed | 539,886 | $55M | 0.3% | 2025-Q4 |
| Polar Asset Management Partners Inc. added | 525,000 | $53M | 0.3% | 2025-Q4 |
| D. E. Shaw & Co., Inc. added | 502,142 | $51M | 0.3% | 2025-Q4 |
| DEUTSCHE BANK AG\ trimmed | 502,117 | $51M | 0.3% | 2025-Q4 |
| Laurion Capital Management LP added | 499,532 | $51M | 0.3% | 2025-Q4 |
| NEXPOINT ASSET MANAGEMENT, L.P. new | 485,990 | $49M | 0.3% | 2025-Q4 |
| Twin Securities, Inc. new | 483,589 | $49M | 0.3% | 2025-Q4 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC new | 480,733 | $49M | 0.3% | 2025-Q4 |
| Assenagon Asset Management S.A. added | 471,134 | $48M | 0.3% | 2025-Q4 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 427,748 | $43M | 0.3% | 2025-Q4 |
| SG Americas Securities, LLC added | 414,874 | $42M | 0.3% | 2025-Q4 |
| Capula Management Ltd new | 413,170 | $42M | 0.3% | 2025-Q4 |
| PICTON MAHONEY ASSET MANAGEMENT new | 400,000 | $41M | 0.3% | 2025-Q4 |
| Melqart Asset Management (UK) Ltd new | 376,840 | $38M | 0.2% | 2025-Q4 |
| Erste Asset Management GmbH trimmed | 375,000 | $38M | 0.2% | 2025-Q4 |
| Swiss National Bank added | 373,180 | $38M | 0.2% | 2025-Q4 |
| Fort Baker Capital Management LP new | 357,000 | $36M | 0.2% | 2025-Q4 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 353,581 | $36M | 0.2% | 2025-Q4 |
| ORBIMED ADVISORS LLC trimmed | 351,716 | $36M | 0.2% | 2025-Q4 |
| WATER ISLAND CAPITAL LLC new | 350,009 | $36M | 0.2% | 2025-Q4 |
| Taconic Capital Advisors LP new | 347,864 | $35M | 0.2% | 2025-Q4 |
| Decagon Asset Management LLP new | 347,400 | $35M | 0.2% | 2025-Q4 |
| BNP PARIBAS FINANCIAL MARKETS added | 345,249 | $35M | 0.2% | 2025-Q4 |
| California Public Employees Retirement System added | 337,684 | $34M | 0.2% | 2025-Q4 |
| CAXTON ASSOCIATES LLP added | 331,682 | $34M | 0.2% | 2025-Q4 |
| Cinctive Capital Management LP added | 330,000 | $34M | 0.2% | 2025-Q4 |
| Allianz Asset Management GmbH added | 326,305 | $33M | 0.2% | 2025-Q4 |
| Wealth Enhancement Trust Services, Inc. | 4,893 | $497K | 0.0% | 2026-Q2 (2 quarters ahead of as-of) |
| HUNTINGTON NATIONAL BANK | 1 | $2K | 0.0% | 2026-Q2 (2 quarters ahead of as-of) |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 2,555,051 | $140M | 0.9% | 2025-Q3 stale (1 quarter behind) |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 1,210,865 | $65M | 0.4% | 2025-Q3 stale (1 quarter behind) |
| ARMISTICE CAPITAL, LLC added | 1,030,465 | $56M | 0.4% | 2025-Q3 stale (1 quarter behind) |
| Deep Track Capital, LP new | 1,000,000 | $55M | 0.3% | 2025-Q3 stale (1 quarter behind) |
| BAILLIE GIFFORD & CO trimmed | 763,356 | $42M | 0.3% | 2025-Q3 stale (1 quarter behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.