Q3 2025 13F Holders as of 9/30/2025
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Type / Class
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Equity / COMMON STOCK
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Shares outstanding
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8.67M
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Number of holders
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32
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Total 13F shares, excl. options
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2.13M
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Shares change
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-159K
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Total reported value, excl. options
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$40.9M
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Value change
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-$2.39M
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Put/Call ratio
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0.14
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Number of buys
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19
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Number of sells
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-16
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Price
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$19.24
Significant Holders of Seres Therapeutics, Inc. - COMMON STOCK (MCRB) as of Q3 2025
55 filings reported holding MCRB - Seres Therapeutics, Inc. - COMMON STOCK as of Q3 2025.
Seres Therapeutics, Inc. - COMMON STOCK (MCRB) has 32 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 2.13M shares
of 8.67M outstanding shares and own 24.53% of the company stock.
Largest 10 shareholders include Flagship Pioneering Inc. (1.16M shares), VANGUARD GROUP INC (312K shares), MARSHALL WACE, LLP (126K shares), BlackRock, Inc. (102K shares), Vontobel Holding Ltd. (98.5K shares), GEODE CAPITAL MANAGEMENT, LLC (85K shares), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (31.4K shares), CITADEL ADVISORS LLC (30.9K shares), STATE STREET CORP (29.7K shares), and Schonfeld Strategic Advisors LLC (28.9K shares).
This table shows the top 32 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.