Who owns GRAIL, Inc. (GRAL)
Which tracked institutional funds hold GRAL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See GRAL company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
The tracked-fund tape on GRAL is one-sided between 2025-Q4 and 2026-Q1: 32 added or opened and 155 trimmed or exited — on balance reducing.
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
GRAL’s largest tracked holder by dollar value, BAKER BROS. ADVISORS LP, sizes it at 1.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 1.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in GRAL 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, across 365 tracked filers holding GRAL, 151 increased or opened the position and 219 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 GRAL between the 2025-Q4 and 2026-Q1 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 14
- VANGUARD CAPITAL MANAGEMENT LLC$79M
- Jefferies Financial Group Inc.$34M
- VANGUARD PORTFOLIO MANAGEMENT LLC$17M
- Casdin Capital, LLC$12M
- VANGUARD FIDUCIARY TRUST CO$10M
- NATIXIS$10M
Full exits 31
- VANGUARD GROUP INC$149M
- CRCM LP$92M
- PERCEPTIVE ADVISORS LLC$20M
- BIT Capital GmbH$13M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$13M
- Blue Water Life Science Advisors, LP$8M
Largest adds
- Sessa Capital IM, L.P.$58M
- BAKER BROS. ADVISORS LP$30M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$14M
- CITIGROUP INC$10M
- BNP PARIBAS FINANCIAL MARKETS$6M
- DIMENSIONAL FUND ADVISORS LP$3M
Largest trims
- BlackRock, Inc.$100M
- PRIMECAP MANAGEMENT CO/CA/$62M
- STATE STREET CORP$59M
- MORGAN STANLEY$45M
- Arbiter Partners Capital Management LLC$35M
- FARALLON CAPITAL MANAGEMENT LLC$32M
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 |
|---|---|---|---|---|
| BAKER BROS. ADVISORS LP added | 4,028,614 | $208M | 9.7% | 2026-Q1 |
| FARALLON CAPITAL MANAGEMENT LLC added | 3,253,684 | $168M | 7.9% | 2026-Q1 |
| BlackRock, Inc. added | 2,968,536 | $153M | 7.2% | 2026-Q1 |
| STATE STREET CORP added | 1,891,893 | $98M | 4.6% | 2026-Q1 |
| PRIMECAP MANAGEMENT CO/CA/ added | 1,843,772 | $95M | 4.5% | 2026-Q1 |
| Deep Track Capital, LP added | 1,722,797 | $89M | 4.2% | 2026-Q1 |
| Sessa Capital IM, L.P. added | 1,719,314 | $89M | 4.2% | 2026-Q1 |
| MORGAN STANLEY added | 1,632,195 | $84M | 3.9% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,527,105 | $79M | 3.7% | 2026-Q1 |
| Arbiter Partners Capital Management LLC trimmed | 1,034,597 | $53M | 2.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 914,114 | $47M | 2.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 827,942 | $43M | 2.0% | 2026-Q1 |
| Jefferies Financial Group Inc. new | 657,500 | $34M | 1.6% | 2026-Q1 |
| Alyeska Investment Group, L.P. added | 645,456 | $33M | 1.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 581,924 | $30M | 1.4% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. | 428,266 | $22M | 1.0% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 408,650 | $21M | 1.0% | 2026-Q1 |
| NORTHERN TRUST CORP added | 349,137 | $18M | 0.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 334,906 | $17M | 0.8% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 304,808 | $16M | 0.7% | 2026-Q1 |
| CITIGROUP INC added | 302,136 | $16M | 0.7% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 292,138 | $15M | 0.7% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 287,619 | $14M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 269,953 | $14M | 0.7% | 2026-Q1 |
| Casdin Capital, LLC trimmed | 230,000 | $12M | 0.6% | 2026-Q1 |
| Slow Capital, Inc. added | 228,256 | $12M | 0.6% | 2026-Q1 |
| Aberdeen Group plc added | 217,428 | $11M | 0.5% | 2026-Q1 |
| Carnegie Investment Counsel added | 217,100 | $11M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 201,229 | $10M | 0.5% | 2026-Q1 |
| NATIXIS added | 199,368 | $10M | 0.5% | 2026-Q1 |
| TCW GROUP INC trimmed | 191,313 | $10M | 0.5% | 2026-Q1 |
| UBS Group AG trimmed | 185,393 | $10M | 0.4% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 183,075 | $9M | 0.4% | 2026-Q1 |
| Douglas Lane & Associates, LLC trimmed | 161,524 | $8M | 0.4% | 2026-Q1 |
| Newtyn Management, LLC | 150,000 | $8M | 0.4% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 148,775 | $8M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 147,985 | $8M | 0.4% | 2026-Q1 |
| Voleon Capital Management LP trimmed | 144,955 | $7M | 0.4% | 2026-Q1 |
| BRAIDWELL LP | 142,755 | $7M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 133,914 | $7M | 0.3% | 2026-Q1 |
| CAPITAL FUND MANAGEMENT S.A. added | 132,887 | $7M | 0.3% | 2026-Q1 |
| Invesco Ltd. trimmed | 128,991 | $7M | 0.3% | 2026-Q1 |
| 180 WEALTH ADVISORS, LLC added | 127,347 | $7M | 0.3% | 2026-Q1 |
| Reynders McVeigh Capital Management, LLC added | 119,065 | $6M | 0.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 112,122 | $6M | 0.3% | 2026-Q1 |
| Nuveen, LLC added | 107,968 | $6M | 0.3% | 2026-Q1 |
| WIM INVESTMENT MANAGEMENT Ltd | 106,400 | $5M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 116,837 | $5M | 0.3% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 90,563 | $5M | 0.2% | 2026-Q1 |
| Legal & General Group Plc added | 86,175 | $4M | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 81,606 | $4M | 0.2% | 2026-Q1 |
| Swiss National Bank trimmed | 69,400 | $4M | 0.2% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL added | 66,758 | $3M | 0.2% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 64,687 | $3M | 0.2% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 38,279 | $3M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 61,316 | $3M | 0.1% | 2026-Q1 |
| MARSHALL WACE, LLP added | 59,900 | $3M | 0.1% | 2026-Q1 |
| Rockefeller Capital Management L.P. trimmed | 59,044 | $3M | 0.1% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 58,108 | $3M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 56,983 | $3M | 0.1% | 2026-Q1 |
| FMR LLC trimmed | 56,297 | $3M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 55,423 | $3M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 55,200 | $3M | 0.1% | 2026-Q1 |
| Man Group plc added | 51,073 | $3M | 0.1% | 2026-Q1 |
| Aquatic Capital Management LLC new | 50,380 | $3M | 0.1% | 2026-Q1 |
| Granahan Investment Management, LLC trimmed | 49,628 | $3M | 0.1% | 2026-Q1 |
| Pictet Asset Management Holding SA added | 53,284 | $3M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 46,495 | $2M | 0.1% | 2026-Q1 |
| Legal Advantage Investments, Inc. added | 44,500 | $2M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 44,470 | $2M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 44,215 | $2M | 0.1% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 43,801 | $2M | 0.1% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC new | 39,797 | $2M | 0.1% | 2026-Q1 |
| Legato Capital Management LLC added | 39,400 | $2M | 0.1% | 2026-Q1 |
| HighTower Advisors, LLC added | 39,208 | $2M | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 38,658 | $2M | 0.1% | 2026-Q1 |
| LPL Financial LLC added | 36,442 | $2M | 0.1% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 34,837 | $2M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 33,894 | $2M | 0.1% | 2026-Q1 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 31,795 | $2M | 0.1% | 2026-Q1 |
| STIFEL FINANCIAL CORP trimmed | 33,814 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,739,176 | $149M | 7.0% | 2025-Q4 stale |
| CRCM LP trimmed | 1,072,374 | $92M | 4.3% | 2025-Q4 stale |
| Wealthquest Corp new | 714,462 | $42M | 2.0% | 2025-Q1 stale |
| One Fin Capital Management LP trimmed | 380,000 | $22M | 1.1% | 2025-Q3 stale |
| PERCEPTIVE ADVISORS LLC new | 237,342 | $20M | 0.9% | 2025-Q4 stale |
| BIT Capital GmbH new | 156,263 | $13M | 0.6% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 152,574 | $13M | 0.6% | 2025-Q4 stale |
| Blue Water Life Science Advisors, LP new | 99,000 | $8M | 0.4% | 2025-Q4 stale |
| Pier Capital, LLC trimmed | 51,836 | $4M | 0.2% | 2025-Q4 stale |
| Verition Fund Management LLC added | 47,528 | $4M | 0.2% | 2025-Q4 stale |
| GILDER GAGNON HOWE & CO LLC added | 43,722 | $4M | 0.2% | 2025-Q4 stale |
| CAXTON ASSOCIATES LLP new | 64,560 | $3M | 0.2% | 2025-Q2 stale |
| T. Rowe Price Investment Management, Inc. new | 32,782 | $3M | 0.1% | 2025-Q4 stale |
| Baird Financial Group, Inc. new | 31,074 | $3M | 0.1% | 2025-Q4 stale |
| Catalio Capital Management, LP trimmed | 30,313 | $3M | 0.1% | 2025-Q4 stale |
| Informed Momentum Co LLC trimmed | 29,692 | $3M | 0.1% | 2025-Q4 stale |
| Blackstone Inc. new | 23,036 | $2M | 0.1% | 2025-Q4 stale |
| Banque Transatlantique SA added | 23,000 | $2M | 0.1% | 2025-Q4 stale |
| NWAM LLC trimmed | 19,699 | $2M | 0.1% | 2025-Q3 stale |
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.