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Seres Therapeutics, Inc.

MCRB
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001609809

In the last 90 days, Seres Therapeutics, Inc. insiders filed 0 open-market purchases and 4 sales; 35 institutions reported holding it in 13F filings for Q2 2026, worth $17.9M in total; no superinvestor holds it.

13F holders, Q1 2021

Institutional positions in Seres Therapeutics, Inc. as of Mar 31, 2021. 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
154
No complete 13F data for Q4 2020
Shares held
90.0M
No complete 13F data for Q4 2020
Total value
$1.85B
No complete 13F data for Q4 2020

Holders and value by quarter

Institutions reporting MCRB 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.

Institutional holdersQ1 2021: 154 institutions
Q1 2021: 154 institutionsQ2 2021: 147 institutionsQ3 2021: 133 institutionsQ4 2021: 148 institutionsQ1 2022: 131 institutionsQ2 2022: 123 institutionsQ3 2022: 120 institutionsQ4 2022: 124 institutionsQ1 2023: 123 institutionsQ2 2023: 138 institutionsQ3 2023: 134 institutionsQ4 2023: 103 institutionsQ1 2024: 99 institutionsQ2 2024: 93 institutionsQ3 2024: 77 institutionsQ4 2024: 69 institutionsQ1 2025: 63 institutionsQ2 2025: 33 institutionsQ3 2025: 32 institutionsQ4 2025: 36 institutionsQ1 2026: 33 institutionsQ2 2026: 35 institutions
Value heldQ1 2021: $1.85B
Q1 2021: $1.85BQ2 2021: $1.93BQ3 2021: $555.1MQ4 2021: $642.8MQ1 2022: $537.2MQ2 2022: $312.7MQ3 2022: $671.6MQ4 2022: $588.2MQ1 2023: $593.9MQ2 2023: $538.1MQ3 2023: $255.6MQ4 2023: $125.4MQ1 2024: $66.3MQ2 2024: $50.0MQ3 2024: $60.1MQ4 2024: $52.5MQ1 2025: $43.1MQ2 2025: $25.4MQ3 2025: $40.9MQ4 2025: $36.4MQ1 2026: $20.5MQ2 2026: $17.9M
Institutions holding MCRB and their total value by quarter
QuarterHoldersValue
Q2 202635$17.9M
Q1 202633$20.5M
Q4 202536$36.4M
Q3 202532$40.9M
Q2 202533$25.4M
Q1 202563$43.1M
Q4 202469$52.5M
Q3 202477$60.1M
Q2 202493$50.0M
Q1 202499$66.3M
Q4 2023103$125.4M
Q3 2023134$255.6M
Q2 2023138$538.1M
Q1 2023123$593.9M
Q4 2022124$588.2M
Q3 2022120$671.6M
Q2 2022123$312.7M
Q1 2022131$537.2M
Q4 2021148$642.8M
Q3 2021133$555.1M
Q2 2021147$1.93B
Q1 2021154$1.85B

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding Seres Therapeutics, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding MCRB in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Flagship Pioneering Inc.14,673,973$302.1M4.84%––
FMR LLC12,280,673$252.9M0.02%––
ARK Investment Management LLCSuperinvestorARK Invest11,855,947$244.1M0.48%––
BlackRock Inc.6,147,316$126.6M0.00%––
Nikko Asset Management Americas, Inc.5,999,356$123.5M0.61%––
Sumitomo Mitsui Trust Holdings, Inc.5,950,118$122.5M0.08%––
Ra Capital Management, L.P.3,694,193$76.1M1.15%––
Janus Henderson Group PLC3,647,933$75.1M0.03%––
Vanguard Group Inc3,419,277$70.4M0.00%––
State Street Corp3,370,820$69.4M0.00%––
Federated Hermes, Inc.2,762,909$56.9M0.11%––
Gilder Gagnon Howe & Co LLC2,608,155$53.7M0.29%––
Price T Rowe Associates Inc1,417,342$29.2M0.00%––
Point72 Asset Management, L.P.974,671$20.1M0.10%––
Geode Capital Management, LLC973,044$20.0M0.00%––
Goldman Sachs Group Inc909,120$18.7M0.01%––
Lord, Abbett & Co. LLC700,049$14.4M0.04%––
Northern Trust Corp642,606$13.2M0.00%––
Opaleye Management Inc.300,000$9.80M1.44%––
Charles Schwab Investment Management Inc382,377$7.87M0.00%––
Morgan Stanley353,758$7.28M0.00%––
Fairmount Funds Management LLC353,016$7.27M3.06%––
Ikarian Capital, LLC350,000$7.21M1.07%––
Citadel Advisors LLC340,202$7.00M0.01%––
Millennium Management LLC267,121$5.50M0.01%––
Eversept Partners, LP215,276$4.43M0.36%––
Two Sigma Investments, LP209,901$4.32M0.01%––
Bank of New York Mellon Corp207,444$4.27M0.00%––
Citigroup Inc200,473$4.13M0.00%––
Artal Group S.A.200,000$4.12M0.09%––
Alps Advisors Inc165,626$3.41M0.03%––
Rafferty Asset Management, LLC155,921$3.21M0.02%––
Bank of America Corp152,003$3.13M0.00%––
Swiss National Bank145,900$3.00M0.00%––
JPMorgan Chase & Co143,007$2.94M0.00%––
Squarepoint Ops LLC142,382$2.93M0.03%––
Commodore Capital LP141,303$2.91M1.16%––
Harvard Management Co Inc131,847$2.71M0.15%––
Renaissance Technologies LLC129,200$2.66M0.00%––
Two Sigma Advisers, LP119,200$2.45M0.01%––
Susquehanna International Group, LLP109,842$2.26M0.00%––
California Public Employees Retirement System104,780$2.16M0.00%––
Altium Capital Management LP104,626$2.15M0.60%––
Silverarc Capital Management, LLC100,000$2.06M1.15%––
Schroder Investment Management Group95,009$1.96M0.00%––
State of Wisconsin Investment Board90,600$1.86M0.00%––
Oregon Public Employees Retirement Fund89,274$1.84M0.02%––
Allianz Asset Management GmbH83,369$1.72M0.00%––
California State Teachers Retirement System83,283$1.72M0.00%––
Alliancebernstein L.P.79,100$1.63M0.00%––
Jane Street Group, LLC75,022$1.54M0.00%––
UBS Asset Management Americas Inc72,028$1.48M0.00%––
Rhumbline Advisers70,603$1.45M0.00%––
LPL Financial LLC64,867$1.34M0.00%––
Tower Research Capital LLC (TRC)63,233$1.30M0.02%––
Deutsche Bank AG62,914$1.30M0.00%––
Group One Trading, L.P.61,960$1.28M0.03%––
Wells Fargo & Company60,738$1.25M0.00%––
DekaBank Deutsche Girozentrale65,000$1.25M0.00%––
Principal Financial Group Inc58,583$1.21M0.00%––
Barclays PLC55,015$1.13M0.00%––
Panagora Asset Management Inc52,930$1.09M0.01%––
D. E. Shaw & Co., Inc.52,118$1.07M0.00%––
New York State Common Retirement Fund51,300$1.06M0.00%––
Nuveen Asset Management, LLC221,497$1.03M0.00%––
HarbourVest Partners LLC49,363$1.02M0.14%––
Seven Eight Capital, LP40,900$1.00M0.23%––
Credit Suisse AG47,913$987.0K0.00%––
TD Asset Management Inc41,725$859.0K0.00%––
Marshall Wace North America L.P.41,610$857.0K0.00%––
Boothbay Fund Management, LLC40,795$840.0K0.04%––
Parametric Portfolio Associates LLC34,231$705.0K0.00%––
Simplex Trading, LLC32,641$672.0K0.04%––
American International Group, Inc.32,191$663.0K0.00%––
Manufacturers Life Insurance Company, The31,479$648.0K0.00%––
Bank Julius Baer & Co. Ltd, Zurich30,250$623.0K0.00%––
ProShare Advisors LLC27,386$564.0K0.00%––
Jump Financial, LLC27,252$561.0K0.05%––
Cresset Asset Management, LLC25,585$527.0K0.01%––
Erste Asset Management GmbH27,000$524.6K0.01%––
Edgewood Management LLC25,000$515.0K0.00%––
Voya Investment Management LLC23,989$494.0K0.00%––
State Board of Administration of Florida Retirement System23,675$487.0K0.00%––
Virtu Financial LLC23,344$481.0K0.03%––
Victory Capital Management Inc22,741$468.0K0.00%––
AtonRa Partners21,762$448.0K0.20%––
MetLife Investment Management21,644$445.6K0.00%––
AQR Capital Management LLC20,522$423.0K0.00%––
Man Group plc20,138$415.0K0.00%––
Wolverine Trading, LLC21,269$413.0K0.01%––
SG3 Management, LLC20,000$412.0K0.13%––
Paloma Partners Management Co19,819$408.0K0.01%––
Engineers Gate Manager LP19,400$399.0K0.02%––
Arizona State Retirement System18,594$383.0K0.00%––
Russell Investments Group, Ltd.18,300$376.0K0.00%––
Stifel Financial Corp17,172$354.0K0.00%––
American Portfolios Advisors16,958$349.2K0.02%––
SG Americas Securities, LLC16,859$347.0K0.00%––
Interchange Capital Partners, LLC16,820$346.0K0.19%––
Ironwood Investment Management LLC15,972$329.0K0.17%––