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, Q2 2023
Institutional positions in Generation Bio Co. as of Jun 30, 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
- 81
- −5 vs. Q1 2023
- Shares held
- 57.3M
- −86.1K (−0.2%) vs. Q1 2023
- Total value
- $315.1M
- +$68.4M (+27.7%) vs. Q1 2023
- New holders
- 8
- 30 more added
- Sold out
- 13
- 26 more reduced
Compare with Q1 2023: 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, Q2 2023
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Huntington National Bank | 1 | $6 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 2 | $11 | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 138 | $759 | 0.00% | +41+42.3% | Added |
| Daiwa Securities Group Inc. | 194 | $1.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 226 | $1.00K | 0.00% | −23−9.2% | Reduced |
| Red Tortoise LLC | 332 | $1.83K | 0.00% | +332 | New |
| Nisa Investment Advisors, LLC | 840 | $4.62K | 0.00% | −3,810−81.9% | Reduced |
| China Universal Asset Management Co., Ltd. | 861 | $4.74K | 0.00% | +53+6.6% | Added |
| Russell Investments Group, Ltd. | 2,067 | $11.4K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 2,660 | $14.6K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 2,662 | $14.6K | 0.00% | −40−1.5% | Reduced |
| Lazard Asset Management LLC | 3,084 | $16.0K | 0.00% | +122+4.1% | Added |
| Manchester Capital Management LLC | 3,000 | $16.5K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,277 | $18.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 4,069 | $22.4K | 0.00% | +159+4.1% | Added |
| Amalgamated Bank | 4,403 | $24.0K | 0.00% | −387−8.1% | Reduced |
| Advisor Group Holdings, Inc. | 4,645 | $25.5K | 0.00% | +4,645 | New |
| Legal & General Group Plc | 4,776 | $26.2K | 0.00% | 00.0% | Unchanged |
| Innovis Asset Management LLC | 10,022 | $55.1K | 0.02% | −9,862−49.6% | Reduced |
| ProShare Advisors LLC | 10,139 | $55.8K | 0.00% | +10,139 | New |
| Denali Advisors LLC | 10,600 | $58.3K | 0.02% | 00.0% | Unchanged |
| Royal Bank of Canada | 11,076 | $61.0K | 0.00% | +1,997+22.0% | Added |
| Susquehanna International Group, LLP | 12,810 | $70.5K | 0.00% | −14,064−52.3% | Reduced |
| State Board of Administration of Florida Retirement System | 12,860 | $70.7K | 0.00% | +12,860 | New |
| Citigroup Inc | 14,599 | $80.3K | 0.00% | +13,920+2,050.1% | Added |
| California State Teachers Retirement System | 15,064 | $82.9K | 0.00% | −2,815−15.7% | Reduced |
| XTX Topco Ltd | 16,836 | $92.6K | 0.02% | +16,836 | New |
| Barclays PLC | 17,395 | $95.7K | 0.00% | −12,791−42.4% | Reduced |
| American Century Companies Inc | 17,786 | $97.8K | 0.00% | +7,339+70.2% | Added |
| Voya Investment Management LLC | 18,902 | $104.0K | 0.00% | −1,173−5.8% | Reduced |
| Deutsche Bank AG | 19,200 | $105.6K | 0.00% | −9,977−34.2% | Reduced |
| Wells Fargo & Company | 19,404 | $106.7K | 0.00% | +8,757+82.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 19,744 | $108.6K | 0.00% | +13+0.1% | Added |
| American International Group, Inc. | 21,796 | $119.9K | 0.00% | −1,413−6.1% | Reduced |
| PDT Partners, LLC | 22,187 | $122.0K | 0.02% | −8,483−27.7% | Reduced |
| MetLife Investment Management | 24,031 | $132.2K | 0.00% | +8,178+51.6% | Added |
| Two Sigma Advisers, LP | 27,500 | $151.3K | 0.00% | +1,800+7.0% | Added |
| SVB Financial Group | 27,882 | $153.4K | 0.29% | −12,519−31.0% | Reduced |
| Millennium Management LLC | 29,193 | $160.6K | 0.00% | −10,125−25.8% | Reduced |
| Citadel Advisors LLC | 32,294 | $177.6K | 0.00% | +32,294 | New |
| Marshall Wace, LLP | 34,473 | $189.6K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 36,239 | $199.3K | 0.00% | −46,280−56.1% | Reduced |
| Cornercap Investment Counsel Inc | 38,062 | $209.3K | 0.04% | +9,390+32.7% | Added |
| Squarepoint Ops LLC | 49,838 | $274.1K | 0.00% | +49,838 | New |
| Wellington Management Group LLP | 55,974 | $307.9K | 0.00% | +55,974 | New |
| Los Angeles Capital Management LLC | 66,372 | $365.0K | 0.00% | +2,200+3.4% | Added |
| Alliancebernstein L.P. | 69,816 | $384.0K | 0.00% | +14,010+25.1% | Added |
| Rhumbline Advisers | 71,428 | $392.9K | 0.00% | −3,484−4.7% | Reduced |
| Invesco Ltd. | 73,895 | $406.4K | 0.00% | −705−0.9% | Reduced |
| Martingale Asset Management L P | 74,304 | $408.7K | 0.01% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 118,000 | $649.0K | 0.00% | +31,400+36.3% | Added |
| Manufacturers Life Insurance Company, The | 152,265 | $837.5K | 0.00% | −449−0.3% | Reduced |
| Bank of New York Mellon Corp | 166,401 | $915.2K | 0.00% | +5,038+3.1% | Added |
| TD Asset Management Inc | 236,255 | $1.30M | 0.00% | +4,794+2.1% | Added |
| Nuveen Asset Management, LLC | 272,324 | $1.50M | 0.00% | −8,298−3.0% | Reduced |
| Renaissance Technologies LLC | 308,100 | $1.70M | 0.00% | +21,100+7.4% | Added |
| Sectoral Asset Management Inc | 356,740 | $1.96M | 0.33% | −28,330−7.4% | Reduced |
| Vontobel Holding Ltd. | 356,740 | $1.96M | 0.02% | −28,330−7.4% | Reduced |
| Northern Trust Corp | 374,286 | $2.06M | 0.00% | −10,805−2.8% | Reduced |
| Charles Schwab Investment Management Inc | 383,524 | $2.11M | 0.00% | +49,979+15.0% | Added |
| UBS Group AG | 401,474 | $2.21M | 0.00% | +14,191+3.7% | Added |
| Harvard Management Co Inc | 510,354 | $2.81M | 0.28% | 00.0% | Unchanged |
| Morgan Stanley | 524,222 | $2.88M | 0.00% | +10,428+2.0% | Added |
| Bank of America Corp | 530,443 | $2.92M | 0.00% | −12,357−2.3% | Reduced |
| Dimensional Fund Advisors LP | 644,500 | $3.54M | 0.00% | +99,665+18.3% | Added |
| Goldman Sachs Group Inc | 720,954 | $3.97M | 0.00% | +31,415+4.6% | Added |
| JPMorgan Chase & Co | 901,317 | $4.96M | 0.00% | +437,463+94.3% | Added |
| State Street Corp | 908,713 | $5.00M | 0.00% | +11,967+1.3% | Added |
| Geode Capital Management, LLC | 1,004,698 | $5.53M | 0.00% | +70,941+7.6% | Added |
| Great Point Partners LLC | 1,022,537 | $5.62M | 1.13% | 00.0% | Unchanged |
| Yiheng Capital Management, L.P. | 1,601,766 | $8.81M | 0.77% | 00.0% | Unchanged |
| EcoR1 Capital, LLC | 2,046,867 | $11.3M | 0.30% | +90,288+4.6% | Added |
| Vanguard Group Inc | 2,259,259 | $12.4M | 0.00% | +16,609+0.7% | Added |
| PFM Health Sciences, LP | 2,597,436 | $14.3M | 0.57% | −50,861−1.9% | Reduced |
| Artal Group S.A. | 2,814,191 | $15.5M | 0.50% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 3,511,456 | $19.3M | 0.01% | +130,500+3.9% | Added |
| BlackRock Inc. | 3,536,962 | $19.5M | 0.00% | +90,598+2.6% | Added |
| Bellevue Group AG | 3,620,280 | $19.9M | 0.28% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 7,494,184 | $41.2M | 0.01% | −150,011−2.0% | Reduced |
| Atlas Venture Life Science Advisors, LLC | 8,279,484 | $45.5M | 5.67% | 00.0% | Unchanged |
| FMR LLC | 8,622,567 | $47.4M | 0.00% | −327,296−3.7% | Reduced |
| Atika Capital Management LLC | 0 | $0 | 0.00% | −355,000−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −131,146−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −55,000−100.0% | Sold out |
| Ensign Peak Advisors, Inc | 0 | $0 | 0.00% | −30,640−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −28,075−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −23,540−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −15,268−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −15,086−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −13,515−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −12,699−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −10,836−100.0% | Sold out |
| Cannell Capital LLC | 0 | $0 | 0.00% | −7,768−100.0% | Sold out |
| TCI Wealth Advisors, Inc. | 0 | $0 | 0.00% | −100−100.0% | Sold out |