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 |
|---|---|---|---|---|---|
| ProShare Advisors LLC | 0 | $0 | 0.00% | −11,103−100.0% | Sold out |
| Public Employees Retirement System of Ohio | 0 | $0 | 0.00% | −11,003−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −10,003−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −5,300−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −3,592−100.0% | Sold out |
| Great West Life Assurance Co | 0 | $0 | 0.00% | −1,866−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −109−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −1−100.0% | Sold out |