Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in COGT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 23.1M | $890.0M | +0.1% | 13.533% | 0.05% |
| 2 | BlackRock, Inc. | 16.0M | $617.6M | +23.7% | 9.390% | 0.01% |
| 3 | DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | 9.0M | $348.1M | 0.0% | 5.293% | 4.11% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 7.3M | $282.3M | β | 4.292% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 6.9M | $265.4M | β | 4.035% | 0.01% |
| 6 | JANUS HENDERSON GROUP PLC | 6.0M | $229.6M | +31.5% | 3.491% | 0.11% |
| 7 | STATE STREET CORP | 5.7M | $218.0M | +14.6% | 3.315% | 0.01% |
| 8 | Fairmount Funds Management LLC | 5.5M | $211.8M | -38.9% | 3.221% | 15.30% |
| 9 | RTW INVESTMENTS, LP | 5.5M | $210.1M | -28.1% | 3.195% | 2.09% |
| 10 | TCG Crossover Management, LLC | 4.9M | $190.4M | -15.7% | 2.895% | 5.45% |
| 11 | GOLDMAN SACHS GROUP INC | 4.4M | $170.7M | +160.0% | 2.595% | 0.02% |
| 12 | Kynam Capital Management, LP | 4.0M | $155.4M | -34.5% | 2.363% | 9.71% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 3.7M | $142.4M | +5.3% | 2.165% | 0.01% |
| 14 | WELLINGTON MANAGEMENT GROUP LLP | 3.6M | $137.7M | +31.9% | 2.094% | 0.03% |
| 15 | COMMODORE CAPITAL LP | 2.9M | $111.2M | +31.5% | 1.690% | 6.43% |
| 16 | Invesco Ltd. | 2.4M | $93.5M | +314.8% | 1.422% | 0.01% |
| 17 | Octagon Capital Advisors LP | 2.4M | $90.5M | 0.0% | 1.375% | 10.01% |
| 18 | Holocene Advisors, LP | 2.3M | $86.6M | +91.0% | 1.317% | 0.21% |
| 19 | Sofinnova Investments, Inc. | 2.1M | $81.4M | +7.1% | 1.237% | 4.26% |
| 20 | VR Adviser, LLC | 2.0M | $77.0M | 0.0% | 1.171% | 2.87% |
| 21 | CITADEL ADVISORS LLC | 1.9M | $73.4M | +19.9% | 1.116% | 0.03% |
| 22 | D. E. Shaw & Co., Inc. | 1.9M | $71.9M | -16.9% | 1.094% | 0.07% |
| 23 | Pictet Asset Management Holding SA | 1.8M | $68.8M | +1499.3% | 1.053% | 0.07% |
| 24 | Siren, L.L.C. | 1.7M | $65.8M | +4.9% | 1.000% | 1.82% |
| 25 | MARSHALL WACE, LLP | 1.6M | $61.6M | -3.6% | 0.936% | 0.07% |
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 COGT β a direct measure of their conviction.
Filings activity in COGT during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new COGT position in Q1 2026
Institutions that fully closed their COGT 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 | 298 | +12% | 122.15% | +17.33 pp | $6.91B | +17% |
| Q4 2025 | 265 | +42% | 104.82% | +64.83 pp | $5.93B | +162% |
| Q3 2025 | 187 | +5.6% | 39.99% | +22.86 pp | $2.26B | +134% |
| Q2 2025 | 177 | 2.7% | 17.13% | +2.72 pp | $969M | +19% |
| Q1 2025 | 182 | +5.8% | 14.41% | 2.09 pp | $815M | 13% |
| Q4 2024 | 172 | +7.5% | 16.50% | 6.64 pp | $933M | 29% |
| Q3 2024 | 160 | +10% | 23.14% | +4.62 pp | $1.31B | +25% |
| Q2 2024 | 145 | β | 18.52% | β | $1.05B | 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 COGT stock.
Based on Q1 2026 13F filings, institutional ownership of Cogent Biosciences, Inc. stands at 122.2%, held across 298 reporting institutions.
FMR LLC is the largest reported institutional holder of COGT, with approximately 23,122,748 shares worth $0.89B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of COGT, including CITADEL ADVISORS LLC.
Our composite Smart Money Score for COGT is 67 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
78 institutions opened new positions in COGT during Q1 2026, while 45 fully exited. 159 added to existing positions and 61 trimmed.
COGT institutional ownership rose by 17.33 percentage points quarter-over-quarter, with a net change of +33 holders.
The top 10 institutions account for 50.1% of all reported 13F value in COGT, and the top 25 account for 71.7%.
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.
Cogent Biosciences, Inc. (COGT) Institutional Ownership