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 2024
Institutional positions in Generation Bio Co. as of Jun 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
- 79
- +2 vs. Q1 2024
- Shares held
- 55.5M
- +533.3K (+1.0%) vs. Q1 2024
- Total value
- $156.5M
- −$67.2M (−30.0%) vs. Q1 2024
- New holders
- 11
- 31 more added
- Sold out
- 9
- 24 more reduced
Compare with Q1 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, Q2 2024
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 9,513,626 | $26.8M | 0.00% | +635,265+7.2% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,279,484 | $23.3M | 2.46% | 00.0% | Unchanged |
| FMR LLC | 5,304,610 | $15.0M | 0.00% | −29,649−0.6% | Reduced |
| Bellevue Group AG | 3,918,856 | $11.1M | 0.18% | +57,281+1.5% | Added |
| BlackRock Inc. | 3,294,247 | $9.29M | 0.00% | +245,398+8.0% | Added |
| Bank of America Corp | 2,981,448 | $8.41M | 0.00% | −8,158−0.3% | Reduced |
| Artal Group S.A. | 2,830,591 | $7.98M | 0.20% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,588,572 | $7.30M | 0.00% | +18,116+0.7% | Added |
| EcoR1 Capital, LLC | 2,046,867 | $5.77M | 0.18% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 1,275,016 | $3.60M | 0.00% | +32,925+2.7% | Added |
| Baker Bros. Advisors LP | 1,206,957 | $3.40M | 0.04% | +835,738+225.1% | Added |
| Geode Capital Management, LLC | 1,135,914 | $3.20M | 0.00% | +65,225+6.1% | Added |
| State Street Corp | 980,519 | $2.77M | 0.00% | +15,910+1.6% | Added |
| Morgan Stanley | 936,396 | $2.64M | 0.00% | −5,386−0.6% | Reduced |
| UBS Group AG | 837,848 | $2.36M | 0.00% | −30,252−3.5% | Reduced |
| PFM Health Sciences, LP | 787,914 | $2.22M | 0.12% | −834,573−51.4% | Reduced |
| Renaissance Technologies LLC | 636,400 | $1.79M | 0.00% | −28,100−4.2% | Reduced |
| Acadian Asset Management LLC | 594,569 | $1.68M | 0.01% | +114,734+23.9% | Added |
| Deutsche Bank AG | 557,996 | $1.57M | 0.00% | −693,570−55.4% | Reduced |
| D. E. Shaw & Co., Inc. | 487,540 | $1.37M | 0.00% | +43,832+9.9% | Added |
| Dimensional Fund Advisors LP | 485,396 | $1.37M | 0.00% | −18,855−3.7% | Reduced |
| Charles Schwab Investment Management Inc | 414,607 | $1.17M | 0.00% | +25,352+6.5% | Added |
| Northern Trust Corp | 365,912 | $1.03M | 0.00% | −17,374−4.5% | Reduced |
| Los Angeles Capital Management LLC | 341,861 | $964.0K | 0.00% | −39,800−10.4% | Reduced |
| TD Asset Management Inc | 340,686 | $960.7K | 0.00% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 301,053 | $849.0K | 0.00% | +268,701+830.6% | Added |
| Bridgeway Capital Management, LLC | 274,000 | $772.7K | 0.02% | +32,400+13.4% | Added |
| Two Sigma Advisers, LP | 272,000 | $767.0K | 0.00% | −61,600−18.5% | Reduced |
| Two Sigma Investments, LP | 229,419 | $647.0K | 0.00% | −84,732−27.0% | Reduced |
| Yiheng Capital Management, L.P. | 191,530 | $540.1K | 0.08% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 186,756 | $526.7K | 0.00% | +44,378+31.2% | Added |
| JPMorgan Chase & Co | 173,694 | $489.8K | 0.00% | −94,384−35.2% | Reduced |
| Nuveen Asset Management, LLC | 169,265 | $477.3K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 164,573 | $464.1K | 0.00% | +13,104+8.7% | Added |
| Palo Alto Investors LP | 150,475 | $424.3K | 0.05% | +150,475 | New |
| XTX Topco Ltd | 132,716 | $374.3K | 0.03% | −33,491−20.2% | Reduced |
| Wellington Management Group LLP | 119,356 | $336.6K | 0.00% | +119,356 | New |
| Millennium Management LLC | 97,948 | $276.2K | 0.00% | −124,795−56.0% | Reduced |
| Panagora Asset Management Inc | 87,620 | $247.1K | 0.00% | −323−0.4% | Reduced |
| Rhumbline Advisers | 78,903 | $222.5K | 0.00% | +5,430+7.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 76,558 | $215.9K | 0.00% | −14,201−15.6% | Reduced |
| Alliancebernstein L.P. | 72,155 | $203.5K | 0.00% | +6,870+10.5% | Added |
| Cornercap Investment Counsel Inc | 57,424 | $161.9K | 0.03% | −16,746−22.6% | Reduced |
| Prudential Financial Inc | 50,975 | $143.8K | 0.00% | +9,800+23.8% | Added |
| Jane Street Group, LLC | 49,618 | $139.9K | 0.00% | +21,195+74.6% | Added |
| Citadel Advisors LLC | 49,475 | $139.5K | 0.00% | −8,146−14.1% | Reduced |
| Kestra Private Wealth Services, LLC | 32,000 | $90.2K | 0.00% | −20,300−38.8% | Reduced |
| American Century Companies Inc | 31,786 | $89.6K | 0.00% | +21,167+199.3% | Added |
| Barclays PLC | 28,791 | $81.2K | 0.00% | −8,614−23.0% | Reduced |
| MetLife Investment Management | 28,396 | $80.1K | 0.00% | +4,040+16.6% | Added |
| Corebridge Financial, Inc. | 26,619 | $75.1K | 0.00% | +26,619 | New |
| Wells Fargo & Company | 26,077 | $73.5K | 0.00% | +5,705+28.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 22,778 | $64.2K | 0.00% | +22,778 | New |
| Cubist Systematic Strategies, LLC | 19,046 | $53.7K | 0.00% | +9,075+91.0% | Added |
| Ameriprise Financial Inc | 17,774 | $50.1K | 0.00% | +17,774 | New |
| Voya Investment Management LLC | 17,201 | $48.5K | 0.00% | +948+5.8% | Added |
| PFG Advisors | 15,000 | $42.3K | 0.00% | +5,000+50.0% | Added |
| Tower Research Capital LLC (TRC) | 13,447 | $37.9K | 0.00% | +8,863+193.3% | Added |
| Invesco Ltd. | 13,352 | $37.7K | 0.00% | −2,075−13.5% | Reduced |
| Sherbrooke Park Advisers LLC | 11,157 | $31.5K | 0.01% | +11,157 | New |
| Citigroup Inc | 11,134 | $31.4K | 0.00% | +2,622+30.8% | Added |
| Royal Bank of Canada | 10,670 | $30.0K | 0.00% | +3,638+51.7% | Added |
| Public Employees Retirement System of Ohio | 8,500 | $24.0K | 0.00% | +8,500 | New |
| Russell Investments Group, Ltd. | 4,912 | $13.9K | 0.00% | +4,912 | New |
| Legal & General Group Plc | 3,919 | $11.1K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 3,585 | $10.1K | 0.00% | −968−21.3% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $9.24K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 2,682 | $7.56K | 0.00% | +23+0.9% | Added |
| Amalgamated Bank | 1,526 | $4.00K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 107 | $302 | 0.00% | +107 | New |
| Nisa Investment Advisors, LLC | 98 | $276 | 0.00% | +83+553.3% | Added |
| GAMMA Investing LLC | 79 | $223 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 53 | $149 | 0.00% | +53 | New |
| SRS Capital Advisors, Inc. | 38 | $108 | 0.00% | +38 | New |
| First Horizon Advisors, Inc. | 2 | $6 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 1 | $3 | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 172 | $0 | 0.00% | −24,920−99.3% | Reduced |
| CWM, LLC | 26 | $0 | 0.00% | +24+1,200.0% | Added |
| Capital Advisors, Ltd. LLC | 38 | $0 | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −64,244−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −38,317−100.0% | Sold out |
| American International Group, Inc. | 0 | $0 | 0.00% | −22,317−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −18,259−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −17,841−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −16,626−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −2,507−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −218−100.0% | Sold out |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |