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, Q1 2023
Institutional positions in Generation Bio Co. as of Mar 31, 2023. 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
- 86
- −12 vs. Q4 2022
- Shares held
- 57.4M
- +242.5K (+0.4%) vs. Q4 2022
- Total value
- $246.8M
- +$22.2M (+9.9%) vs. Q4 2022
- New holders
- 11
- 27 more added
- Sold out
- 23
- 31 more reduced
Compare with Q4 2022: 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, Q1 2023
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Huntington National Bank | 1 | $4 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 2 | $9 | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 97 | $417 | 0.00% | −4−4.0% | Reduced |
| TCI Wealth Advisors, Inc. | 100 | $430 | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 194 | $1.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 249 | $1.00K | 0.00% | +249 | New |
| Citigroup Inc | 679 | $2.92K | 0.00% | −1,516−69.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 808 | $3.47K | 0.00% | +204+33.8% | Added |
| Russell Investments Group, Ltd. | 2,067 | $8.89K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 2,660 | $11.4K | 0.00% | −407−13.3% | Reduced |
| New York State Common Retirement Fund | 2,702 | $11.6K | 0.00% | −23,335−89.6% | Reduced |
| Lazard Asset Management LLC | 2,962 | $12.0K | 0.00% | +589+24.8% | Added |
| Manchester Capital Management LLC | 3,000 | $12.9K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,277 | $14.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,910 | $17.0K | 0.00% | +612+18.6% | Added |
| Nisa Investment Advisors, LLC | 4,650 | $20.0K | 0.00% | −42,050−90.0% | Reduced |
| Legal & General Group Plc | 4,776 | $20.5K | 0.00% | −15,671−76.6% | Reduced |
| Amalgamated Bank | 4,790 | $21.0K | 0.00% | −1,174−19.7% | Reduced |
| Cannell Capital LLC | 7,768 | $33.4K | 0.01% | 00.0% | Unchanged |
| Royal Bank of Canada | 9,079 | $40.0K | 0.00% | −3,796−29.5% | Reduced |
| Denali Advisors LLC | 10,600 | $45.6K | 0.02% | 00.0% | Unchanged |
| Wells Fargo & Company | 10,647 | $45.8K | 0.00% | +8,547+407.0% | Added |
| Y-Intercept (Hong Kong) Ltd | 10,836 | $46.6K | 0.01% | +10,836 | New |
| American Century Companies Inc | 10,447 | $48.8K | 0.00% | +10,447 | New |
| SG Americas Securities, LLC | 12,699 | $55.0K | 0.00% | −4,353−25.5% | Reduced |
| Cubist Systematic Strategies, LLC | 13,515 | $58.1K | 0.00% | +13,515 | New |
| Ergoteles LLC | 15,086 | $64.9K | 0.00% | +15,086 | New |
| Jacobs Levy Equity Management, Inc | 15,268 | $65.7K | 0.00% | −66,902−81.4% | Reduced |
| MetLife Investment Management | 15,853 | $68.2K | 0.00% | −10,464−39.8% | Reduced |
| California State Teachers Retirement System | 17,879 | $76.9K | 0.00% | −39,738−69.0% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 19,731 | $84.8K | 0.00% | −32−0.2% | Reduced |
| Innovis Asset Management LLC | 19,884 | $85.5K | 0.03% | −188−0.9% | Reduced |
| Voya Investment Management LLC | 20,075 | $86.3K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 23,209 | $99.8K | 0.00% | +462+2.0% | Added |
| Jane Street Group, LLC | 23,540 | $101.2K | 0.00% | +23,540 | New |
| Two Sigma Advisers, LP | 25,700 | $110.5K | 0.00% | +900+3.6% | Added |
| Susquehanna International Group, LLP | 26,874 | $115.6K | 0.00% | +26,874 | New |
| Tudor Investment Corp Et Al | 28,075 | $121.0K | 0.00% | +28,075 | New |
| Cornercap Investment Counsel Inc | 28,672 | $123.3K | 0.02% | +153+0.5% | Added |
| Deutsche Bank AG | 29,177 | $125.5K | 0.00% | −121,107−80.6% | Reduced |
| Barclays PLC | 30,186 | $129.8K | 0.00% | +17,273+133.8% | Added |
| Ensign Peak Advisors, Inc | 30,640 | $131.8K | 0.00% | +15,400+101.0% | Added |
| PDT Partners, LLC | 30,670 | $131.9K | 0.02% | +16,110+110.6% | Added |
| Marshall Wace, LLP | 34,473 | $148.2K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 39,318 | $169.0K | 0.00% | +13,400+51.7% | Added |
| SVB Financial Group | 40,401 | $173.7K | 0.33% | −12,519−23.7% | Reduced |
| Jefferies Financial Group Inc. | 55,000 | $236.5K | 0.00% | +55,000 | New |
| Alliancebernstein L.P. | 55,806 | $240.0K | 0.00% | −1,100−1.9% | Reduced |
| Los Angeles Capital Management LLC | 64,172 | $275.9K | 0.00% | −1,160−1.8% | Reduced |
| Martingale Asset Management L P | 74,304 | $319.5K | 0.01% | 00.0% | Unchanged |
| Invesco Ltd. | 74,600 | $320.8K | 0.00% | +57,917+347.2% | Added |
| Rhumbline Advisers | 74,912 | $322.0K | 0.00% | +581+0.8% | Added |
| D. E. Shaw & Co., Inc. | 82,519 | $354.8K | 0.00% | −144,329−63.6% | Reduced |
| State of Wisconsin Investment Board | 86,600 | $372.4K | 0.00% | −36,328−29.6% | Reduced |
| Gsa Capital Partners LLP | 131,146 | $564.0K | 0.06% | +44,992+52.2% | Added |
| Manufacturers Life Insurance Company, The | 152,714 | $656.7K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 161,363 | $693.9K | 0.00% | −2,566−1.6% | Reduced |
| TD Asset Management Inc | 231,461 | $995.3K | 0.00% | 00.0% | Unchanged |
| Nuveen Asset Management, LLC | 280,622 | $1.21M | 0.00% | −61,439−18.0% | Reduced |
| Renaissance Technologies LLC | 287,000 | $1.23M | 0.00% | +35,000+13.9% | Added |
| Charles Schwab Investment Management Inc | 333,545 | $1.43M | 0.00% | −12,762−3.7% | Reduced |
| Atika Capital Management LLC | 355,000 | $1.53M | 0.24% | +355,000 | New |
| Sectoral Asset Management Inc | 385,070 | $1.66M | 0.32% | +111,283+40.6% | Added |
| Vontobel Holding Ltd. | 385,070 | $1.66M | 0.02% | +111,283+40.6% | Added |
| Northern Trust Corp | 385,091 | $1.66M | 0.00% | −40,055−9.4% | Reduced |
| UBS Group AG | 387,283 | $1.67M | 0.00% | +7,818+2.1% | Added |
| JPMorgan Chase & Co | 463,854 | $1.99M | 0.00% | +2,714+0.6% | Added |
| Harvard Management Co Inc | 510,354 | $2.19M | 0.23% | 00.0% | Unchanged |
| Morgan Stanley | 513,794 | $2.21M | 0.00% | +21,818+4.4% | Added |
| Bank of America Corp | 542,800 | $2.33M | 0.00% | −322,462−37.3% | Reduced |
| Dimensional Fund Advisors LP | 544,835 | $2.34M | 0.00% | +92,375+20.4% | Added |
| Goldman Sachs Group Inc | 689,539 | $2.97M | 0.00% | −112,456−14.0% | Reduced |
| State Street Corp | 896,746 | $3.86M | 0.00% | −28,054−3.0% | Reduced |
| Geode Capital Management, LLC | 933,757 | $4.02M | 0.00% | +65,257+7.5% | Added |
| Great Point Partners LLC | 1,022,537 | $4.40M | 0.87% | 00.0% | Unchanged |
| Yiheng Capital Management, L.P. | 1,601,766 | $6.89M | 0.54% | +415,471+35.0% | Added |
| EcoR1 Capital, LLC | 1,956,579 | $8.41M | 0.27% | +1,956,579 | New |
| Vanguard Group Inc | 2,242,650 | $9.64M | 0.00% | +11,151+0.5% | Added |
| PFM Health Sciences, LP | 2,648,297 | $11.4M | 0.52% | −254,895−8.8% | Reduced |
| Artal Group S.A. | 2,814,191 | $12.1M | 0.72% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 3,380,956 | $14.5M | 0.01% | −196,799−5.5% | Reduced |
| BlackRock Inc. | 3,446,364 | $14.8M | 0.00% | −261,703−7.1% | Reduced |
| Bellevue Group AG | 3,620,280 | $15.6M | 0.23% | −7,000−0.2% | Reduced |
| Price T Rowe Associates Inc | 7,644,195 | $32.9M | 0.00% | +383,149+5.3% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,279,484 | $35.6M | 4.82% | +6080.0% | Added |
| FMR LLC | 8,949,863 | $38.5M | 0.00% | +36,532+0.4% | Added |
| Farallon Capital Management, L.L.C. | 0 | $0 | 0.00% | −1,249,382−100.0% | Sold out |
| HighVista Strategies LLC | 0 | $0 | 0.00% | −138,880−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −106,800−100.0% | Sold out |
| BVF Inc | 0 | $0 | 0.00% | −102,900−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −58,613−100.0% | Sold out |
| Cheyne Capital Management (UK) LLP | 0 | $0 | 0.00% | −51,126−100.0% | Sold out |
| Credit Suisse AG | 0 | $0 | 0.00% | −30,495−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −24,883−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −24,668−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −16,500−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −13,620−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −13,267−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −12,488−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −11,294−100.0% | Sold out |