COGENT BIOSCIENCES INC COGT
COM · Common Stock · CUSIP 19240Q201 · ISIN US19240Q2012
Company in Waltham, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWaltham, MA
- Founded2014
- Websitecogentbio.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.1m this quarter). Holder counts are more reliable. Shares outstanding: 142.4m as of 2025-11-05, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $14.36. Options: 11 managers hold calls ($20.7m notional), 5 hold puts ($7.8m).
Trends to Q3 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 134 |
| Q4 2022 | 136 |
| Q1 2023 | 137 |
| Q2 2023 | 137 |
| Q3 2023 | 136 |
| Q4 2023 | 145 |
| Q1 2024 | 147 |
| Q2 2024 | 150 |
| Q3 2024 | 162 |
| Q4 2024 | 178 |
| Q1 2025 | 187 |
| Q2 2025 | 182 |
| Q3 2025 | 195 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 89 | 54 |
| Q1 2024 | 94 | 67 |
| Q2 2024 | 81 | 68 |
| Q3 2024 | 81 | 67 |
| Q4 2024 | 89 | 69 |
| Q1 2025 | 97 | 68 |
| Q2 2025 | 106 | 72 |
| Q3 2025 | 126 | 69 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $1.5m | $3.9m | 2.52 |
| Q1 2025 | $354.8k | $1.4m | 3.99 |
| Q2 2025 | $20.5m | $6.5m | 0.32 |
| Q3 2025 | $20.7m | $7.8m | 0.38 |
Biggest buyers
| DEERFIELD MANAGEMENT COMPANY, L.P. | Added | +6.4m |
| FMR LLC | Added | +5.3m |
| Commodore Capital LP | Added | +4.9m |
| RTW INVESTMENTS, LP | New | +3.5m |
| Fairmount Funds Management LLC | Added | +2.8m |
| Balyasny Asset Management L.P. | New | +2.7m |
| BlackRock, Inc. | Added | +1.7m |
| Vivo Capital, LLC | Added | +1.7m |
| STATE STREET CORP | Added | +1.4m |
| D. E. Shaw & Co., Inc. | Added | +1.3m |
Biggest sellers
| Paradigm Biocapital Advisors LP | Reduced | -7.2m |
| Point72 Asset Management, L.P. | Reduced | -3.7m |
| Vestal Point Capital, LP | Sold out | -3.1m |
| Frazier Life Sciences Management, L.P. | Sold out | -1.7m |
| UBS Group AG | Reduced | -1.7m |
| Ikarian Capital, LLC | Reduced | -1.0m |
| Venrock Adviser, LLC | Reduced | -755.4k |
| Kynam Capital Management, LP | Reduced | -606.4k |
| SUPERSTRING CAPITAL MANAGEMENT LP | Reduced | -601.5k |
| ALGERT GLOBAL LLC | Reduced | -596.9k |
Biggest calls
| Caption Management, LLC | Reduced | $5.5m380.0k shares |
| SILVERARC CAPITAL MANAGEMENT, LLC | New | $5.2m360.0k shares |
| DIADEMA PARTNERS LP | Added | $2.9m200.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.9m199.1k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $2.7m190.1k shares |
| Exome Asset Management LLC | New | $646.2k45.0k shares |
| SIMPLEX TRADING, LLC | Added | $275.0k19.2k shares |
| JANE STREET GROUP, LLC | New | $196.7k13.7k shares |
| CITADEL ADVISORS LLC | Reduced | $173.8k12.1k shares |
| GROUP ONE TRADING LLC | Added | $168.0k11.7k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.9m271.0k shares |
| Caption Management, LLC | Reduced | $1.9m135.0k shares |
| SIMPLEX TRADING, LLC | Added | $907.0k63.2k shares |
| GROUP ONE TRADING LLC | Added | $703.6k49.0k shares |
| CITADEL ADVISORS LLC | Reduced | $315.9k22.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution filed 2025-02-12 | 15.0% |
| Fairmount Funds Management LLC 13D · may seek influence -1.3 pts · filed 2026-03-31 | 8.6% |
| BlackRock, Inc. 13G · institution +1.5 pts · filed 2026-07-27 | 8.0% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.1% |
Fell to 5% or below in the last year: Flynn James E (2.9%, 2026-08-13), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Commodore Capital LP (1.8%, 2026-02-17), Kynam Capital Management, LP (4.3%, 2026-02-17)
Insider purchases and sales in Q3 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 1 | $332.5k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 1 | $25.0m | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-07-10 | Fairmount Funds Management LLC Director · Fairmount Healthcare Fund II LP | Bought | $25.0m2.8m shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.02% of their portfolio | 22.4m $321.8m | Added +5.3m |
| BlackRock, Inc. 0.00% of their portfolio | 10.4m $148.9m | Added +1.7m |
| DEERFIELD MANAGEMENT COMPANY, L.P. 1.99% of their portfolio | 9.1m $130.0m | Added +6.4m |
| Fairmount Funds Management LLC 11.63% of their portfolio | 9.0m $129.3m | Added +2.8m |
| Kynam Capital Management, LP 8.43% of their portfolio | 7.9m $113.2m | Reduced -606.4k |
| VANGUARD GROUP INC 0.00% of their portfolio | 7.8m $111.4m | Added +1.2m |
| Commodore Capital LP 5.08% of their portfolio | 7.2m $104.1m | Added +4.9m |
| TCG Crossover Management, LLC 4.80% of their portfolio | 6.8m $97.6m | Reduced -166.2k |
| STATE STREET CORP 0.00% of their portfolio | 4.8m $68.6m | Added +1.4m |
| Venrock Adviser, LLC 3.23% of their portfolio | 4.0m $57.4m | Reduced -755.4k |
| RTW INVESTMENTS, LP 0.61% of their portfolio | 3.5m $49.8m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 3.3m $47.0m | Added +602.0k |
| JANUS HENDERSON GROUP PLC 0.02% of their portfolio | 3.2m $45.6m | Added +305.0k |
| Paradigm Biocapital Advisors LP 1.34% of their portfolio | 3.2m $45.3m | Reduced -7.2m |
| Octagon Capital Advisors LP 6.44% of their portfolio | 2.9m $41.3m | Added +111.1k |
| Vivo Capital, LLC 3.22% of their portfolio | 2.8m $40.1m | Added +1.7m |
| Balyasny Asset Management L.P. 0.08% of their portfolio | 2.7m $38.3m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 2.2m $32.2m | Added +838.3k |
| Redmile Group, LLC 3.09% of their portfolio | 2.2m $31.7m | Added +761.1k |
| Sofinnova Investments, Inc. 1.87% of their portfolio | 2.1m $30.6m | Reduced -227.6k |
| Saturn V Capital Management LP 6.38% of their portfolio | 2.0m $29.1m | Reduced -272.5k |
| UBS Group AG 0.01% of their portfolio | 1.9m $26.6m | Reduced -1.7m |
| Siren, L.L.C. 0.97% of their portfolio | 1.7m $24.8m | Added +869.9k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 1.7m $23.9m | Added +1.0m |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.7m $23.8m | Added +459.2k |
| EMERALD ADVISERS, LLC 0.73% of their portfolio | 1.6m $22.7m | Added +133.7k |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 1.5m $22.0m | Added +1.3m |
| Nantahala Capital Management, LLC 1.34% of their portfolio | 1.5m $21.6m | Reduced -148.7k |
| MORGAN STANLEY 0.00% of their portfolio | 1.3m $18.5m | Added +59.0k |
| Point72 Asset Management, L.P. 0.04% of their portfolio | 1.2m $17.8m | Reduced -3.7m |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 1.2m $17.1m | Added +303.7k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 1.2m $17.0m | Added +247.2k |
| Duquesne Family Office LLC 0.39% of their portfolio | 1.1m $15.2m | New |
| EMERALD MUTUAL FUND ADVISERS TRUST 0.76% of their portfolio | 1.0m $14.7m | Added +127.4k |
| Rock Springs Capital Management LP 0.85% of their portfolio | 1.0m $14.5m | Added +208.1k |
| Candriam S.C.A. 0.07% of their portfolio | 954.2k $13.7m | Added +526.9k |
| BOONE CAPITAL MANAGEMENT LLC 4.45% of their portfolio | 945.0k $13.6m | New |
| Nuveen, LLC 0.00% of their portfolio | 939.6k $13.5m | Added +709.5k |
| SILVERARC CAPITAL MANAGEMENT, LLC 1.69% of their portfolio | 815.1k $11.7m | New |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 698.0k $10.0m | Added +482.6k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 642.5k $9.2m | New |
| KENNEDY CAPITAL MANAGEMENT LLC 0.19% of their portfolio | 583.9k $8.4m | Added +63.8k |
| Assenagon Asset Management S.A. 0.01% of their portfolio | 577.0k $8.3m | Added +380.3k |
| Trexquant Investment LP 0.08% of their portfolio | 566.4k $8.1m | Added +65.3k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.01% of their portfolio | 562.0k $8.1m | New |
| Woodline Partners LP 0.03% of their portfolio | 513.4k $7.4m | Reduced -487.2k |
| Logos Global Management LP 0.71% of their portfolio | 500.0k $7.2m | New |
| HighVista Strategies LLC 1.63% of their portfolio | 462.4k $6.6m | Added +179.2k |
| Exome Asset Management LLC 4.21% of their portfolio | 443.5k $6.4m | Reduced -90.1k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 415.0k $6.0m | Reduced -555.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 406.9k $5.8m | Added +109.5k |
| MACQUARIE GROUP LTD 0.01% of their portfolio | 398.8k $5.7m | Added +168.8k |
| Invesco Ltd. 0.00% of their portfolio | 372.3k $5.3m | Added +259.2k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 363.0k $5.2m | Added +71.2k |
| SUPERSTRING CAPITAL MANAGEMENT LP 5.11% of their portfolio | 361.4k $5.2m | Reduced -601.5k |
| BARCLAYS PLC 0.00% of their portfolio | 359.8k $5.2m | Added +39.3k |
| Hennion & Walsh Asset Management, Inc. 0.16% of their portfolio | 300.1k $4.3m | Reduced -5.5k |
| SummitTX Capital, L.P. 0.18% of their portfolio | 295.8k $4.2m | Reduced -4.1k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 289.4k $4.2m | Added +289.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 272.5k $3.9m | New |
| ALGERT GLOBAL LLC 0.06% of their portfolio | 267.1k $3.8m | Reduced -596.9k |
| New Leaf Venture Partners, L.L.C. 8.37% of their portfolio | 250.8k $3.6m | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 233.0k $3.3m | New |
| Susquehanna Portfolio Strategies, LLC 0.05% of their portfolio | 229.8k $3.3m | Added +134.0k |
| F/m Investments LLC 0.12% of their portfolio | 220.2k $3.2m | Added +100.2k |
| PLATINUM INVESTMENT MANAGEMENT LTD 0.20% of their portfolio | 219.5k $3.2m | Unchanged |
| Burkehill Global Management, LP 0.16% of their portfolio | 200.0k $2.9m | New |
| BOOTHBAY FUND MANAGEMENT, LLC 0.07% of their portfolio | 192.8k $2.8m | Reduced -309.2k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 187.1k $2.7m | New |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio | 179.7k $2.5m | Added +55.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 179.7k $2.6m | Reduced -199.7k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 176.7k $2.5m | Added +20.2k |
| Caption Management, LLC 0.15% of their portfolio | 176.1k $2.5m | Reduced -261.2k |
| Swiss National Bank 0.00% of their portfolio | 162.2k $2.3m | Added +23.1k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 149.6k $2.1m | Added +80.3k |
| Rafferty Asset Management, LLC 0.01% of their portfolio | 148.8k $2.1m | Added +57.1k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 148.4k $2.1m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 143.0k $2.1m | Reduced -64.2k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.15% of their portfolio | 137.3k $2.0m | Reduced -25.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 124.6k $1.8m | Added +42.6k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 120.9k $1.7m | Added +27.7k |
| Holocene Advisors, LP 0.00% of their portfolio | 117.9k $1.7m | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 116.8k $1.7m | Added +71.8k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 113.7k $1.6m | Added +94.8k |
| Cinctive Capital Management LP 0.08% of their portfolio | 111.1k $1.6m | New |
| Fisher Asset Management, LLC 0.00% of their portfolio | 103.5k $1.5m | Reduced -7.4k |
| ACUTA CAPITAL PARTNERS, LLC 1.53% of their portfolio | 102.9k $1.5m | New |
| Alyeska Investment Group, L.P. 0.00% of their portfolio | 100.0k $1.4m | New |
| Legal & General Group Plc 0.00% of their portfolio | 98.8k $1.4m | Added +18.8k |
| SPHERA FUNDS MANAGEMENT LTD. 0.34% of their portfolio | 98.5k $1.4m | Reduced -45.2k |
| DIADEMA PARTNERS LP 0.98% of their portfolio | 97.8k $1.4m | Reduced -294.4k |
| Engineers Gate Manager LP 0.02% of their portfolio | 96.5k $1.4m | Added +6.2k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 96.1k $1.4m | Added +38.4k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 95.9k $1.4m | Reduced -106.1k |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 93.2k $1.3m | Added +93.2k |
| NEOS Investment Management LLC 0.01% of their portfolio | 89.9k $1.3m | Reduced -27.7k |
| Tema ETFs LLC 0.11% of their portfolio | 89.9k $1.3m | Reduced -27.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 89.7k $1.3m | Added +16.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 81.0k $1.2m | Added +25.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 80.7k $1.2m | Added +22.1k |