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, Q4 2022
Institutional positions in Generation Bio Co. as of Dec 31, 2022. 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
- 98
- −16 vs. Q3 2022
- Shares held
- 57.1M
- −563.2K (−1.0%) vs. Q3 2022
- Total value
- $224.5M
- −$81.8M (−26.7%) vs. Q3 2022
- New holders
- 10
- 41 more added
- Sold out
- 26
- 28 more reduced
1 institution that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2022
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 8,913,331 | $35.0M | 0.00% | +61,648+0.7% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,278,876 | $32.5M | 3.92% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 7,261,046 | $28.5M | 0.00% | −134,527−1.8% | Reduced |
| BlackRock Inc. | 3,708,067 | $14.6M | 0.00% | +92,022+2.5% | Added |
| Bellevue Group AG | 3,627,280 | $14.3M | 0.19% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 3,577,755 | $14.1M | 0.01% | +95,138+2.7% | Added |
| PFM Health Sciences, LP | 2,903,192 | $11.4M | 0.48% | −110,520−3.7% | Reduced |
| Artal Group S.A. | 2,814,191 | $11.1M | 0.64% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,231,499 | $8.77M | 0.00% | +12,977+0.6% | Added |
| Farallon Capital Management, L.L.C. | 1,249,382 | $4.91M | 0.03% | −1,250,618−50.0% | Reduced |
| Yiheng Capital Management, L.P. | 1,186,295 | $4.66M | 0.36% | +188,438+18.9% | Added |
| Great Point Partners LLC | 1,022,537 | $4.02M | 0.83% | +197,460+23.9% | Added |
| State Street Corp | 924,800 | $3.63M | 0.00% | +6,309+0.7% | Added |
| Geode Capital Management, LLC | 868,500 | $3.41M | 0.00% | +13,571+1.6% | Added |
| Bank of America Corp | 865,262 | $3.40M | 0.00% | +258,804+42.7% | Added |
| Goldman Sachs Group Inc | 801,995 | $3.15M | 0.00% | −13,581−1.7% | Reduced |
| Harvard Management Co Inc | 510,354 | $2.01M | 0.25% | 00.0% | Unchanged |
| Morgan Stanley | 491,976 | $1.93M | 0.00% | +5,092+1.0% | Added |
| JPMorgan Chase & Co | 461,140 | $1.81M | 0.00% | +3,065+0.7% | Added |
| Dimensional Fund Advisors LP | 452,460 | $1.78M | 0.00% | +119,487+35.9% | Added |
| Northern Trust Corp | 425,146 | $1.67M | 0.00% | +11,448+2.8% | Added |
| UBS Group AG | 379,465 | $1.49M | 0.00% | +7,523+2.0% | Added |
| Charles Schwab Investment Management Inc | 346,307 | $1.36M | 0.00% | +5,709+1.7% | Added |
| Nuveen Asset Management, LLC | 342,061 | $1.34M | 0.00% | −16,587−4.6% | Reduced |
| Sectoral Asset Management Inc | 273,787 | $1.08M | 0.21% | +273,787 | New |
| Vontobel Holding Ltd. | 273,787 | $1.08M | 0.01% | +273,787 | New |
| Renaissance Technologies LLC | 252,000 | $990.0K | 0.00% | −38,200−13.2% | Reduced |
| TD Asset Management Inc | 231,461 | $909.6K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 226,848 | $891.5K | 0.00% | +9,431+4.3% | Added |
| Bank of New York Mellon Corp | 163,929 | $644.2K | 0.00% | −1,486−0.9% | Reduced |
| Deutsche Bank AG | 150,284 | $590.6K | 0.00% | +10,329+7.4% | Added |
| Manufacturers Life Insurance Company, The | 152,714 | $584.2K | 0.00% | +703+0.5% | Added |
| HighVista Strategies LLC | 138,880 | $545.8K | 0.32% | −110,114−44.2% | Reduced |
| State of Wisconsin Investment Board | 122,928 | $483.1K | 0.00% | −6,745−5.2% | Reduced |
| Swiss National Bank | 106,800 | $419.7K | 0.00% | +6,100+6.1% | Added |
| BVF Inc | 102,900 | $404.4K | 0.02% | −258,924−71.6% | Reduced |
| Gsa Capital Partners LLP | 86,154 | $339.0K | 0.04% | +3,208+3.9% | Added |
| Jacobs Levy Equity Management, Inc | 82,170 | $322.9K | 0.00% | −64,097−43.8% | Reduced |
| Martingale Asset Management L P | 74,304 | $292.0K | 0.01% | 00.0% | Unchanged |
| Rhumbline Advisers | 74,331 | $292.0K | 0.00% | +3,669+5.2% | Added |
| Los Angeles Capital Management LLC | 65,332 | $256.8K | 0.00% | 00.0% | Unchanged |
| Panagora Asset Management Inc | 58,613 | $230.3K | 0.00% | +58,613 | New |
| California State Teachers Retirement System | 57,617 | $226.4K | 0.00% | +1,793+3.2% | Added |
| Alliancebernstein L.P. | 56,906 | $223.6K | 0.00% | +3,900+7.4% | Added |
| SVB Financial Group | 52,920 | $208.0K | 0.57% | +52,920 | New |
| Cheyne Capital Management (UK) LLP | 51,126 | $200.9K | 0.35% | +51,126 | New |
| Nisa Investment Advisors, LLC | 46,700 | $184.0K | 0.00% | +10,500+29.0% | Added |
| Marshall Wace, LLP | 34,473 | $135.5K | 0.00% | +651+1.9% | Added |
| Credit Suisse AG | 30,495 | $119.8K | 0.00% | −338−1.1% | Reduced |
| Cornercap Investment Counsel Inc | 28,519 | $112.1K | 0.02% | +174+0.6% | Added |
| MetLife Investment Management | 26,317 | $103.4K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 26,037 | $102.3K | 0.00% | +40.0% | Added |
| Millennium Management LLC | 25,918 | $102.0K | 0.00% | +15,571+150.5% | Added |
| Trexquant Investment LP | 24,883 | $97.8K | 0.00% | −8,022−24.4% | Reduced |
| Two Sigma Advisers, LP | 24,800 | $97.5K | 0.00% | −12,400−33.3% | Reduced |
| UBS Asset Management Americas Inc | 24,668 | $96.9K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 22,747 | $89.4K | 0.00% | −83−0.4% | Reduced |
| Legal & General Group Plc | 20,447 | $80.4K | 0.00% | +1,478+7.8% | Added |
| Voya Investment Management LLC | 20,075 | $78.9K | 0.00% | 00.0% | Unchanged |
| Innovis Asset Management LLC | 20,072 | $78.9K | 0.04% | +20,072 | New |
| Mirae Asset Global Investments Co., Ltd. | 19,763 | $77.7K | 0.00% | +31+0.2% | Added |
| SG Americas Securities, LLC | 17,052 | $67.0K | 0.00% | +1,288+8.2% | Added |
| Invesco Ltd. | 16,683 | $65.6K | 0.00% | −13−0.1% | Reduced |
| Virginia Retirement Systems Et Al | 16,500 | $64.8K | 0.00% | +4,100+33.1% | Added |
| Ensign Peak Advisors, Inc | 15,240 | $59.9K | 0.00% | +7,450+95.6% | Added |
| PDT Partners, LLC | 14,560 | $57.2K | 0.01% | −26,047−64.1% | Reduced |
| Ameriprise Financial Inc | 13,620 | $53.0K | 0.00% | −70−0.5% | Reduced |
| Teacher Retirement System of Texas | 13,267 | $52.0K | 0.00% | −811−5.8% | Reduced |
| Barclays PLC | 12,913 | $50.7K | 0.00% | +10,873+533.0% | Added |
| Royal Bank of Canada | 12,875 | $50.0K | 0.00% | +5,939+85.6% | Added |
| Arizona State Retirement System | 12,488 | $49.1K | 0.00% | +853+7.3% | Added |
| Citadel Advisors LLC | 11,294 | $44.4K | 0.00% | −10,188−47.4% | Reduced |
| ProShare Advisors LLC | 11,103 | $43.6K | 0.00% | +852+8.3% | Added |
| Public Employees Retirement System of Ohio | 11,003 | $43.0K | 0.00% | −2,497−18.5% | Reduced |
| Denali Advisors LLC | 10,600 | $41.7K | 0.02% | +3,200+43.2% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 10,003 | $39.3K | 0.00% | +10,003 | New |
| Cannell Capital LLC | 7,768 | $30.5K | 0.01% | 00.0% | Unchanged |
| Amalgamated Bank | 5,964 | $23.0K | 0.00% | 00.0% | Unchanged |
| Aquatic Capital Management LLC | 5,300 | $21.0K | 0.00% | +5,300 | New |
| Ameritas Investment Partners, Inc. | 3,277 | $15.6K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 3,592 | $14.1K | 0.00% | −500−12.2% | Reduced |
| Tower Research Capital LLC (TRC) | 3,298 | $13.0K | 0.00% | −2,880−46.6% | Reduced |
| Metropolitan Life Insurance Co | 3,067 | $12.1K | 0.00% | +2,130+227.3% | Added |
| Manchester Capital Management LLC | 3,000 | $11.8K | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 2,373 | $9.00K | 0.00% | +2,373 | New |
| Citigroup Inc | 2,195 | $8.63K | 0.00% | −307−12.3% | Reduced |
| Wells Fargo & Company | 2,100 | $8.25K | 0.00% | −118−5.3% | Reduced |
| Russell Investments Group, Ltd. | 2,067 | $8.12K | 0.00% | −21,129−91.1% | Reduced |
| Great West Life Assurance Co | 1,866 | $7.00K | 0.00% | −841−31.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 604 | $2.37K | 0.00% | +52+9.4% | Added |
| Daiwa Securities Group Inc. | 194 | $1.00K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 109 | $428 | 0.00% | +109 | New |
| State of Wyoming | 101 | $397 | 0.00% | +79+359.1% | Added |
| TCI Wealth Advisors, Inc. | 100 | $393 | 0.00% | 00.0% | Unchanged |
| US Bancorp | 8 | $31 | 0.00% | −2,644−99.7% | Reduced |
| First Horizon Advisors, Inc. | 2 | $8 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1 | $4 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 1 | $4 | 0.00% | 00.0% | Unchanged |
| Compagnie Lombard Odier SCmA | 0 | $0 | 0.00% | −1,050−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −49,644−100.0% | Sold out |