Q3 2025 13F Holders as of 9/30/2025
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Type / Class
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Equity / #OTHER
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Shares outstanding
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67M
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Number of holders
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4
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Total 13F shares, excl. options
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858K
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Shares change
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-40.5M
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Total reported value, excl. options
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$5.19M
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Value change
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-$57M
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Number of sells
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-54
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Price
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$6.12
Significant Holders of Generation Bio Co. - #OTHER (GBIO) as of Q3 2025
57 filings reported holding GBIO - Generation Bio Co. - #OTHER as of Q3 2025.
Generation Bio Co. - #OTHER (GBIO) has 4 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 858K shares
of 67M outstanding shares and own 1.28% of the company stock.
Largest 10 shareholders include Atlas Venture Life Science Advisors, LLC (828K shares), OSAIC HOLDINGS, INC. (15.5K shares), Palo Alto Investors LP (15K shares), Accent Capital Management, LLC (38 shares), Aegis Wealth Management LLC (0 shares), JPMORGAN CHASE & CO (0 shares), Y-Intercept (Hong Kong) Ltd (0 shares), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (0 shares), Callan Family Office, LLC (0 shares), and PNC Financial Services Group, Inc. (0 shares).
This table shows the top 4 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
| Investor |
Option |
Weight % |
Change % |
Value $ |
* Price $ |
Shares |
Share Change |
Activity |
Report Period |
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.