MCRB SERES THERAPEUTICS INC
FollowCMN (common), issuer CIK 1609809
36 managers (36 13F filers) reported a position in MCRB shares at 2025-12-31, 2,441,574 shares in all. 8 filers opened a position and 5 filers sold out during the quarter.
- Managers
- 36
- 13F filers
- 36
- New
- 8
- Added
- 14
- Reduced
- 7
- Sold out
- 5
- Shares held by filers
- 2,441,574
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q4 2025
Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| Flagship Pioneering, LLCin group Flagship Pioneering, LLC | 1,155,850 | $17.2M | 5.32% | 0 | 13F-HRTimelineGroup |
| VANGUARD GROUP INCin group VANGUARD GROUP INC | 324,214 | $4.82M | <0.01% | +12,325 | 13F-HRTimelineGroup |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO… | 179,929 | $2.68M | <0.01% | new | 13F-HRTimelineGroup |
| MARSHALL WACE, LLPin group MARSHALL WACE, LLP | 120,177 | $1.79M | <0.01% | -5,423 | 13F-HRTimelineGroup |
| BlackRock, Inc.in group BlackRock, Inc. | 103,621 | $1.54M | <0.01% | +1,561 | 13F-HRTimelineGroup |
| Vontobel Holding Ltd.in group Vontobel Holding Ltd. | 103,234 | $1.54M | 0.01% | +4,723 | 13F-HRTimelineGroup |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 86,142 | $1.28M | <0.01% | +1,160 | 13F-HRTimelineGroup |
| 683 Capital Management, LLCin group 683 Capital Management, LLC | 52,314 | $778K | 0.06% | new | 13F-HRTimelineGroup |
| STATE STREET CORPin group STATE STREET CORP | 33,901 | $504K | <0.01% | +4,170 | 13F-HRTimelineGroup |
| Lion Point Capital, LP | 31,570 | $470K | 2.43% | +4,432 | 13F-HRTimeline |
| CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC | 31,418 | $468K | <0.01% | +533 | 13F-HRTimelineGroup |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co | 31,369 | $467K | <0.01% | -34 | 13F-HRTimelineGroup |
| Schonfeld Strategic Advisors LLC | 29,097 | $433K | <0.01% | +155 | 13F-HRTimeline |
| TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP | 25,749 | $383K | <0.01% | new | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 25,126 | $374K | <0.01% | +6,792 | 13F-HR/ATimelineGroup |
| AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC | 16,271 | $242K | <0.01% | new | 13F-HRTimelineGroup |
| NORTHERN TRUST CORPin group NORTHERN TRUST CORP | 14,765 | $220K | <0.01% | +2,664 | 13F-HRTimelineGroup |
| OMERS ADMINISTRATION Corp | 14,400 | $214K | <0.01% | new | 13F-HRTimeline |
| Invesco Ltd.in group Invesco Ltd. | 14,360 | $214K | <0.01% | +3,918 | 13F-HRTimelineGroup |
| GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC | 14,340 | $213K | <0.01% | new | 13F-HR/ATimelineGroup |
| ExodusPoint Capital Management, LP | 12,737 | $190K | <0.01% | new | 13F-HRTimeline |
| BARCLAYS PLCin group BARCLAYS PLC | 7,432 | $111K | <0.01% | +6,024 | 13F-HRTimelineGroup |
| UBS Group AGin group UBS Group AG | 4,226 | $62.9K | <0.01% | -8,456 | 13F-HRTimelineGroup |
| SBI Securities Co., Ltd. | 3,482 | $51.8K | <0.01% | 0 | 13F-HRTimeline |
| FMR LLCin group FMR LLC | 1,740 | $25.9K | <0.01% | -142 | 13F-HRTimelineGroup |
| Rachor Investment Advisory Services, LLC | 1,477 | $22K | 0.01% | 13F-HRTimeline | |
| SIMPLEX TRADING, LLC | 1,232 | $18.3K | <0.01% | -1,575 | 13F-HRTimeline |
| BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS | 773 | $11.5K | <0.01% | +561 | 13F-HRTimelineGroup |
| WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN | 260 | $3.87K | <0.01% | +250 | 13F-HRTimelineGroup |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 195 | $2.9K | <0.01% | -5,148 | 13F-HRTimelineGroup |
| Physician Wealth Advisors, Inc. | 142 | $2.11K | <0.01% | 0 | 13F-HRTimeline |
| Sound Income Strategies, LLC | 8 | $128 | <0.01% | 0 | 13F-HRTimeline |
| OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC. | 8 | $119 | <0.01% | 0 | 13F-HRTimelineGroup |
| Allworth Financial LP | 4 | $60 | <0.01% | new | 13F-HRTimeline |
| Arax Advisory Partners | 2 | $30 | <0.01% | 0 | 13F-HRTimeline |
| ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA | 9 | $0 | 0% | -287 | 13F-HRTimelineGroupValue filed as zero, left out of ratios. |