Generation Bio Co.
GBIODelisted Feb 9, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001733294
Generation Bio Co. was delisted on Feb 9, 2026; its insiders filed their last Form 4 on Feb 9, 2026; 48 institutions reported holding it in 13F filings for Q4 2025, worth $24.5M in total; no superinvestor held it.
13F holders, Q3 2024
Institutional positions in Generation Bio Co. as of Sep 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 77
- −1 vs. Q2 2024
- Shares held
- 55.2M
- +3.05M (+5.8%) vs. Q2 2024
- Total value
- $136.4M
- −$10.8M (−7.3%) vs. Q2 2024
- New holders
- 6
- 21 more added
- Sold out
- 7
- 28 more reduced
1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GBIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1 | $0 |
| Q1 2026 | 2 | $53.3K |
| Q4 2025 | 48 | $24.5M |
| Q3 2025 | 41 | $24.2M |
| Q2 2025 | 63 | $13.3M |
| Q1 2025 | 81 | $19.3M |
| Q4 2024 | 80 | $57.1M |
| Q3 2024 | 77 | $136.4M |
| Q2 2024 | 79 | $156.5M |
| Q1 2024 | 77 | $223.7M |
| Q4 2023 | 76 | $86.7M |
| Q3 2023 | 77 | $216.8M |
| Q2 2023 | 81 | $315.1M |
| Q1 2023 | 86 | $246.8M |
| Q4 2022 | 98 | $224.5M |
| Q3 2022 | 115 | $306.3M |
| Q2 2022 | 95 | $363.5M |
| Q1 2022 | 89 | $415.8M |
| Q4 2021 | 89 | $390.3M |
| Q3 2021 | 82 | $1.20B |
| Q2 2021 | 98 | $1.25B |
| Q1 2021 | 88 | $1.27B |
Institutions, Q3 2024
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| CWM, LLC | 46 | $0 | 0.00% | +20+76.9% | Added |
| Capital Advisors, Ltd. LLC | 29 | $0 | 0.00% | −9−23.7% | Reduced |
| Huntington National Bank | 1 | $2 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 2 | $5 | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 38 | $94 | 0.00% | 00.0% | Unchanged |
| Capital Performance Advisors LLP | 45 | $111 | 0.00% | +45 | New |
| GAMMA Investing LLC | 50 | $124 | 0.00% | −29−36.7% | Reduced |
| The PNC Financial Services Group, Inc. | 53 | $131 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 88 | $217 | 0.00% | −10−10.2% | Reduced |
| Advisor Group Holdings, Inc. | 107 | $264 | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 1,526 | $4.00K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 2,106 | $5.20K | 0.00% | +2,106 | New |
| New York State Common Retirement Fund | 2,682 | $6.63K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,277 | $8.09K | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 3,351 | $8.28K | 0.00% | +3,351 | New |
| California State Teachers Retirement System | 3,585 | $8.86K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,747 | $9.26K | 0.00% | −9,700−72.1% | Reduced |
| Legal & General Group Plc | 3,919 | $9.68K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 4,304 | $10.6K | 0.00% | −24,092−84.8% | Reduced |
| Russell Investments Group, Ltd. | 5,061 | $12.5K | 0.00% | +149+3.0% | Added |
| Public Employees Retirement System of Ohio | 5,641 | $13.9K | 0.00% | −2,859−33.6% | Reduced |
| Royal Bank of Canada | 11,835 | $30.0K | 0.00% | +1,165+10.9% | Added |
| Invesco Ltd. | 12,413 | $30.7K | 0.00% | −939−7.0% | Reduced |
| Ameriprise Financial Inc | 14,274 | $35.3K | 0.00% | −3,500−19.7% | Reduced |
| PFG Advisors | 15,000 | $37.0K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 17,067 | $42.0K | 0.00% | +17,067 | New |
| Voya Investment Management LLC | 17,201 | $42.5K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 17,922 | $44.3K | 0.00% | −114,794−86.5% | Reduced |
| Deutsche Bank AG | 23,351 | $57.7K | 0.00% | −534,645−95.8% | Reduced |
| Corebridge Financial, Inc. | 26,455 | $65.3K | 0.00% | −164−0.6% | Reduced |
| Wells Fargo & Company | 27,053 | $66.8K | 0.00% | +976+3.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 27,493 | $67.9K | 0.00% | +4,715+20.7% | Added |
| Cornercap Investment Counsel Inc | 28,995 | $71.6K | 0.02% | −28,429−49.5% | Reduced |
| American Century Companies Inc | 31,316 | $77.4K | 0.00% | −470−1.5% | Reduced |
| Jane Street Group, LLC | 34,783 | $85.9K | 0.00% | −14,835−29.9% | Reduced |
| Citigroup Inc | 37,116 | $91.7K | 0.00% | +25,982+233.4% | Added |
| Kestra Private Wealth Services, LLC | 42,000 | $103.7K | 0.00% | +10,000+31.3% | Added |
| Prudential Financial Inc | 50,975 | $125.9K | 0.00% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 72,155 | $178.2K | 0.00% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 73,718 | $182.1K | 0.00% | −2,840−3.7% | Reduced |
| Rhumbline Advisers | 75,619 | $186.8K | 0.00% | −3,284−4.2% | Reduced |
| Barclays PLC | 76,430 | $188.8K | 0.00% | +47,639+165.5% | Added |
| Panagora Asset Management Inc | 87,528 | $216.2K | 0.00% | −92−0.1% | Reduced |
| Two Sigma Investments, LP | 149,899 | $370.3K | 0.00% | −79,520−34.7% | Reduced |
| Palo Alto Investors LP | 150,475 | $371.7K | 0.05% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 151,387 | $373.9K | 0.00% | −35,369−18.9% | Reduced |
| Manufacturers Life Insurance Company, The | 163,978 | $405.0K | 0.00% | −595−0.4% | Reduced |
| Nuveen Asset Management, LLC | 169,265 | $418.1K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 170,192 | $420.4K | 0.00% | −3,502−2.0% | Reduced |
| Yiheng Capital Management, L.P. | 191,530 | $473.1K | 0.09% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 217,100 | $536.2K | 0.00% | −54,900−20.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 273,445 | $675.4K | 0.00% | −27,608−9.2% | Reduced |
| Los Angeles Capital Management LLC | 295,727 | $730.4K | 0.00% | −46,134−13.5% | Reduced |
| Bridgeway Capital Management, LLC | 324,000 | $800.3K | 0.02% | +50,000+18.2% | Added |
| TD Asset Management Inc | 340,686 | $827.9K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 391,820 | $967.8K | 0.00% | +25,908+7.1% | Added |
| Charles Schwab Investment Management Inc | 423,299 | $1.05M | 0.00% | +8,692+2.1% | Added |
| Dimensional Fund Advisors LP | 441,117 | $1.09M | 0.00% | −44,279−9.1% | Reduced |
| D. E. Shaw & Co., Inc. | 488,149 | $1.21M | 0.00% | +609+0.1% | Added |
| Renaissance Technologies LLC | 594,300 | $1.47M | 0.00% | −42,100−6.6% | Reduced |
| Acadian Asset Management LLC | 605,812 | $1.50M | 0.00% | +11,243+1.9% | Added |
| PFM Health Sciences, LP | 787,914 | $1.95M | 0.11% | 00.0% | Unchanged |
| UBS Group AG | 846,886 | $2.09M | 0.00% | +9,038+1.1% | Added |
| State Street Corp | 992,188 | $2.45M | 0.00% | +11,669+1.2% | Added |
| Morgan Stanley | 999,671 | $2.47M | 0.00% | +63,275+6.8% | Added |
| Geode Capital Management, LLC | 1,139,167 | $2.81M | 0.00% | +3,253+0.3% | Added |
| Goldman Sachs Group Inc | 1,188,203 | $2.93M | 0.00% | −86,813−6.8% | Reduced |
| Baker Bros. Advisors LP | 1,944,945 | $4.80M | 0.05% | +737,988+61.1% | Added |
| EcoR1 Capital, LLC | 2,046,867 | $5.06M | 0.17% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,635,722 | $6.51M | 0.00% | +47,150+1.8% | Added |
| Siren, L.L.C. | 2,982,733 | $7.37M | 0.37% | +2,982,733 | New |
| Bank of America Corp | 2,983,092 | $7.37M | 0.00% | +1,644+0.1% | Added |
| BlackRock, Inc. | 3,415,998 | $8.44M | 0.00% | +3,415,998 | New |
| Bellevue Group AG | 3,918,856 | $9.68M | 0.16% | 00.0% | Unchanged |
| FMR LLC | 5,320,266 | $13.1M | 0.00% | +15,656+0.3% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,279,484 | $20.5M | 1.90% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 9,351,590 | $23.1M | 0.00% | −162,036−1.7% | Reduced |
| Artal Group S.A. | 0 | $0 | 0.00% | −2,830,591−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −119,356−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −97,948−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −49,475−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −19,046−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −11,157−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −172−100.0% | Sold out |
| BlackRock Inc. | – | – | – | – | Not filed |