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 2025
Institutional positions in Generation Bio Co. as of Mar 31, 2025. 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
- +2 vs. Q4 2024
- Shares held
- 47.7M
- −5.98M (−11.1%) vs. Q4 2024
- Total value
- $19.3M
- −$37.6M (−66.0%) vs. Q4 2024
- New holders
- 10
- 15 more added
- Sold out
- 8
- 37 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2025
Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Huntington National Bank | 1 | $0 | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 2 | $1 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 27 | $11 | 0.00% | −48−64.0% | Reduced |
| True Wealth Design, LLC | 129 | $53 | 0.00% | +129 | New |
| SBI Securities Co., Ltd. | 470 | $190 | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 946 | $383 | 0.00% | +531+128.0% | Added |
| Nisa Investment Advisors, LLC | 1,677 | $679 | 0.00% | +1,375+455.3% | Added |
| The PNC Financial Services Group, Inc. | 1,796 | $728 | 0.00% | +1,743+3,288.7% | Added |
| Amalgamated Bank | 1,526 | $1.00K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 2,682 | $1.09K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 2,703 | $1.09K | 0.00% | −3,112−53.5% | Reduced |
| Sterling Capital Management LLC | 2,803 | $1.14K | 0.00% | −826−22.8% | Reduced |
| Ameritas Investment Partners, Inc. | 3,277 | $1.33K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 3,534 | $1.43K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 3,585 | $1.45K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 3,919 | $1.59K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 5,246 | $2.00K | 0.00% | −2,741−34.3% | Reduced |
| CWM, LLC | 8,352 | $3.00K | 0.00% | +8,049+2,656.4% | Added |
| ProShare Advisors LLC | 10,711 | $4.34K | 0.00% | −3,223−23.1% | Reduced |
| CIBC World Markets Corp | 10,979 | $4.45K | 0.00% | +10,979 | New |
| Invesco Ltd. | 13,536 | $5.48K | 0.00% | −826−5.8% | Reduced |
| BNP Paribas Arbitrage, SA | 14,917 | $6.04K | 0.00% | −3,571−19.3% | Reduced |
| PFG Advisors | 15,000 | $6.08K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 15,459 | $6.34K | 0.00% | +15,352+14,347.7% | Added |
| Police & Firemen's Retirement System of New Jersey | 15,793 | $6.40K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 16,852 | $6.83K | 0.00% | +16,852 | New |
| SG Americas Securities, LLC | 18,209 | $7.00K | 0.00% | −8,888−32.8% | Reduced |
| Ieq Capital, LLC | 20,439 | $8.28K | 0.00% | +20,439 | New |
| Tower Research Capital LLC (TRC) | 20,910 | $8.47K | 0.00% | +10,610+103.0% | Added |
| Corebridge Financial, Inc. | 24,239 | $9.82K | 0.00% | −359−1.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 29,957 | $12.1K | 0.00% | +1,248+4.3% | Added |
| Wells Fargo & Company | 30,197 | $12.2K | 0.00% | −2,644−8.1% | Reduced |
| Citigroup Inc | 34,787 | $14.1K | 0.00% | −6,690−16.1% | Reduced |
| Prudential Financial Inc | 35,575 | $14.4K | 0.00% | −15,400−30.2% | Reduced |
| Intech Investment Management LLC | 37,954 | $15.4K | 0.00% | +14,617+62.6% | Added |
| Jane Street Group, LLC | 38,723 | $15.7K | 0.00% | +38,723 | New |
| Kestra Private Wealth Services, LLC | 52,000 | $21.1K | 0.00% | +52,000 | New |
| XTX Topco Ltd | 52,440 | $21.2K | 0.00% | +52,440 | New |
| Bridgeway Capital Management, LLC | 55,200 | $22.4K | 0.00% | −191,600−77.6% | Reduced |
| Barclays PLC | 61,151 | $24.8K | 0.00% | −24,749−28.8% | Reduced |
| Rhumbline Advisers | 69,754 | $28.2K | 0.00% | −3,691−5.0% | Reduced |
| Alliancebernstein L.P. | 72,155 | $29.2K | 0.00% | 00.0% | Unchanged |
| Integrated Wealth Concepts LLC | 72,720 | $29.5K | 0.00% | 00.0% | Unchanged |
| Panagora Asset Management Inc | 86,373 | $35.0K | 0.00% | −1,271−1.5% | Reduced |
| Aegis Wealth Management LLC | 88,890 | $36.0K | 0.02% | 00.0% | Unchanged |
| AQR Capital Management LLC | 89,014 | $36.0K | 0.00% | +89,014 | New |
| Susquehanna International Group, LLP | 92,248 | $37.4K | 0.00% | +69,460+304.8% | Added |
| Ewa, LLC | 92,901 | $37.6K | 0.01% | +92,901 | New |
| Two Sigma Investments, LP | 105,548 | $42.7K | 0.00% | −14,855−12.3% | Reduced |
| Deutsche Bank AG | 108,771 | $44.6K | 0.00% | −75,402−40.9% | Reduced |
| Citadel Advisors LLC | 121,355 | $49.1K | 0.00% | +21,050+21.0% | Added |
| Bank of New York Mellon Corp | 139,783 | $56.6K | 0.00% | −130−0.1% | Reduced |
| Manufacturers Life Insurance Company, The | 143,980 | $58.3K | 0.00% | −1,114−0.8% | Reduced |
| Palo Alto Investors LP | 150,475 | $60.9K | 0.01% | 00.0% | Unchanged |
| Nuveen, LLC | 169,265 | $68.6K | 0.00% | +169,265 | New |
| Jefferies Financial Group Inc. | 173,659 | $70.3K | 0.00% | −2,088,158−92.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 182,005 | $73.7K | 0.00% | −129,530−41.6% | Reduced |
| Yiheng Capital Management, L.P. | 191,530 | $77.6K | 0.03% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 191,830 | $77.8K | 0.00% | −204,407−51.6% | Reduced |
| Two Sigma Advisers, LP | 194,000 | $78.6K | 0.00% | −400−0.2% | Reduced |
| JPMorgan Chase & Co | 201,959 | $81.8K | 0.00% | −95,746−32.2% | Reduced |
| TD Asset Management Inc | 340,686 | $138.0K | 0.00% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 356,441 | $144.4K | 0.00% | −10,585−2.9% | Reduced |
| Northern Trust Corp | 369,907 | $149.8K | 0.00% | −33,160−8.2% | Reduced |
| Los Angeles Capital Management LLC | 378,914 | $153.5K | 0.00% | +132,987+54.1% | Added |
| Squarepoint Ops LLC | 439,313 | $177.9K | 0.00% | +373,685+569.4% | Added |
| Morgan Stanley | 878,936 | $356.0K | 0.00% | −60,891−6.5% | Reduced |
| UBS Group AG | 977,349 | $395.8K | 0.00% | −76,160−7.2% | Reduced |
| State Street Corp | 1,005,742 | $407.3K | 0.00% | −33,383−3.2% | Reduced |
| Goldman Sachs Group Inc | 1,086,098 | $439.9K | 0.00% | −122,171−10.1% | Reduced |
| Geode Capital Management, LLC | 1,108,422 | $449.0K | 0.00% | −28,653−2.5% | Reduced |
| Acadian Asset Management LLC | 1,159,135 | $468.0K | 0.00% | +407,843+54.3% | Added |
| Bank of America Corp | 1,287,186 | $521.3K | 0.00% | −1,710,553−57.1% | Reduced |
| Renaissance Technologies LLC | 1,880,670 | $761.7K | 0.00% | +917,711+95.3% | Added |
| Baker Bros. Advisors LP | 1,944,945 | $787.7K | 0.01% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,619,709 | $1.06M | 0.00% | −22,287−0.8% | Reduced |
| Siren, L.L.C. | 2,968,925 | $1.20M | 0.07% | −13,808−0.5% | Reduced |
| BlackRock, Inc. | 3,405,178 | $1.38M | 0.00% | −53,887−1.6% | Reduced |
| FMR LLC | 4,752,415 | $1.92M | 0.00% | +126,370+2.7% | Added |
| Atlas Venture Life Science Advisors, LLC | 8,279,484 | $3.35M | 0.64% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 9,061,839 | $3.67M | 0.00% | −217,220−2.3% | Reduced |
| EcoR1 Capital, LLC | 0 | $0 | 0.00% | −2,046,867−100.0% | Sold out |
| PFM Health Sciences, LP | 0 | $0 | 0.00% | −787,914−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −344,922−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −91,578−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −63,559−100.0% | Sold out |
| Envestnet Asset Management Inc | 0 | $0 | 0.00% | −14,104−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −11,691−100.0% | Sold out |
| Assetmark, Inc | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |