Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in GRAL held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BAKER BROS. ADVISORS LP | 4.0M | $208.2M | +93.2% | 9.821% | 1.20% |
| 2 | FARALLON CAPITAL MANAGEMENT LLC | 3.3M | $168.2M | +38.9% | 7.932% | 1.10% |
| 3 | BlackRock, Inc. | 3.0M | $153.4M | +0.4% | 7.237% | 0.00% |
| 4 | STATE STREET CORP | 1.9M | $97.8M | +3.5% | 4.612% | 0.00% |
| 5 | PRIMECAP MANAGEMENT CO/CA/ | 1.8M | $95.3M | +0.3% | 4.495% | 0.08% |
| 6 | Deep Track Capital, LP | 1.7M | $89.0M | +68.4% | 4.200% | 1.84% |
| 7 | Sessa Capital IM, L.P. | 1.7M | $88.9M | +371.4% | 4.191% | 1.69% |
| 8 | MORGAN STANLEY | 1.6M | $84.4M | +8.0% | 3.979% | 0.01% |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $78.9M | β | 3.723% | 0.00% |
| 10 | Jefferies Financial Group Inc. | 1.3M | $67.6M | β | 3.187% | 0.47% |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1.1M | $57.2M | -8.3% | 2.697% | 0.01% |
| 12 | Arbiter Partners Capital Management LLC | 1.0M | $53.5M | -0.1% | 2.522% | 35.59% |
| 13 | BANK OF AMERICA CORP /DE/ | 914K | $47.2M | +29.0% | 2.228% | 0.00% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 828K | $42.8M | +3.3% | 2.018% | 0.00% |
| 15 | Alyeska Investment Group, L.P. | 645K | $33.4M | +45.9% | 1.573% | 0.09% |
| 16 | GOLDMAN SACHS GROUP INC | 582K | $30.1M | +7.4% | 1.419% | 0.00% |
| 17 | RA CAPITAL MANAGEMENT, L.P. | 428K | $22.1M | 0.0% | 1.044% | 0.23% |
| 18 | DIMENSIONAL FUND ADVISORS LP | 409K | $21.1M | +88.5% | 0.996% | 0.00% |
| 19 | NORTHERN TRUST CORP | 349K | $18.0M | +2.3% | 0.851% | 0.00% |
| 20 | VANGUARD PORTFOLIO MANAGEMENT LLC | 335K | $17.3M | β | 0.816% | 0.00% |
| 21 | CITIGROUP INC | 302K | $15.6M | +347.4% | 0.737% | 0.01% |
| 22 | CITADEL ADVISORS LLC | 297K | $15.3M | +1.3% | 0.724% | 0.01% |
| 23 | RAYMOND JAMES FINANCIAL INC | 292K | $15.1M | +12.9% | 0.712% | 0.00% |
| 24 | AQR CAPITAL MANAGEMENT LLC | 292K | $14.6M | -10.7% | 0.712% | 0.01% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 270K | $14.0M | -0.3% | 0.658% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in GRAL β a direct measure of their conviction.
Filings activity in GRAL during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new GRAL position in Q1 2026
Institutions that fully closed their GRAL position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 361 | 12% | 77.20% | 30.56 pp | $1.90B | 28% |
| Q4 2025 | 409 | +21% | 107.76% | +47.07 pp | $2.65B | +78% |
| Q3 2025 | 339 | 0.9% | 60.69% | +3.91 pp | $1.49B | +6.9% |
| Q2 2025 | 342 | +13% | 56.78% | +30.47 pp | $1.39B | +116% |
| Q1 2025 | 303 | 6.2% | 26.31% | +7.36 pp | $646M | +39% |
| Q4 2024 | 323 | +7.7% | 18.95% | +7.77 pp | $465M | +70% |
| Q3 2024 | 300 | 15% | 11.18% | 1.36 pp | $274M | 11% |
| Q2 2024 | 353 | β | 12.54% | β | $308M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying GRAL stock.
Based on Q1 2026 13F filings, institutional ownership of GRAIL, Inc. stands at 77.2%, held across 361 reporting institutions.
BAKER BROS. ADVISORS LP is the largest reported institutional holder of GRAL, with approximately 4,028,614 shares worth $0.21B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of GRAL, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC.
Our composite Smart Money Score for GRAL is 33 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
58 institutions opened new positions in GRAL during Q1 2026, while 106 fully exited. 39 added to existing positions and 261 trimmed.
GRAL institutional ownership fell by 30.56 percentage points quarter-over-quarter, with a net change of -48 holders.
The top 10 institutions account for 59.7% of all reported 13F value in GRAL, and the top 25 account for 81.7%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
GRAIL, Inc. (GRAL) Institutional Ownership