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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, Q4 2021

Institutional positions in Seres Therapeutics, Inc. as of Dec 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
148
+17 vs. Q3 2021
Shares held
77.2M
−2.35M (−3.0%) vs. Q3 2021
Total value
$642.8M
+$88.3M (+15.9%) vs. Q3 2021
New holders
37
47 more added
Sold out
20
40 more reduced

2 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2021: new holders, sold out and not filed yet

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 holdersQ4 2021: 148 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 heldQ4 2021: $642.8M
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, Q4 2021

Shares, value and share of portfolio for each institution holding Seres Therapeutics, Inc.; share changes are against Q3 2021.

Institutions holding MCRB in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Marshall Wace, LLP123,005$1.02M0.00%−108,945−47.0%Reduced
Bank of America Corp123,208$1.03M0.00%−125,117−50.4%Reduced
Engineers Gate Manager LP123,498$1.03M0.05%+101,998+474.4%Added
Adage Capital Partners GP, L.L.C.125,000$1.04M0.00%+125,000New
Harvard Management Co Inc131,847$1.10M0.10%00.0%Unchanged
Toronto Dominion Bank139,042$1.16M0.00%+139,042New
Qube Research & Technologies Ltd144,717$1.21M0.01%+144,717New
Swiss National Bank150,800$1.26M0.00%00.0%Unchanged
Jane Street Group, LLC156,187$1.30M0.00%+74,833+92.0%Added
Putnam Investments LLC209,297$1.74M0.00%+209,297New
Connor, Clark & Lunn Investment Management Ltd.217,968$1.82M0.01%+169,987+354.3%Added
Bank of New York Mellon Corp220,619$1.84M0.00%−53,531−19.5%Reduced
Nuveen Asset Management, LLC240,841$1.92M0.00%−265,675−52.5%Reduced
BNP Paribas Arbitrage, SA238,302$1.99M0.00%+225,775+1,802.3%Added
Two Sigma Advisers, LP245,900$2.05M0.01%−291,000−54.2%Reduced
Barclays PLC261,699$2.18M0.00%+213,765+446.0%Added
Citigroup Inc266,455$2.22M0.00%−56,461−17.5%Reduced
Deutsche Bank AG279,979$2.33M0.00%+201,437+256.5%Added
Cubist Systematic Strategies, LLC287,402$2.39M0.02%−30,788−9.7%Reduced
PDT Partners, LLC300,661$2.50M0.19%−7,363−2.4%Reduced
Kynam Capital Management, LP304,901$2.54M1.36%+304,901New
Silverarc Capital Management, LLC320,602$2.67M1.20%+45,769+16.7%Added
Rafferty Asset Management, LLC329,981$2.75M0.01%−166,983−33.6%Reduced
Citadel Advisors LLC395,732$3.30M0.00%+300,526+315.7%Added
HRT Financial LP405,995$3.38M0.02%+405,995New
Voloridge Investment Management, LLC431,885$3.60M0.02%−377,496−46.6%Reduced
Charles Schwab Investment Management Inc470,292$3.92M0.00%+4,409+0.9%Added
Lion Point Capital, LP481,803$4.01M1.32%00.0%Unchanged
Morgan Stanley544,717$4.54M0.00%−136,718−20.1%Reduced
Soviero Asset Management, LP550,000$4.58M1.08%+550,000New
Price T Rowe Associates Inc560,564$4.67M0.00%−799,959−58.8%Reduced
Susquehanna International Group, LLP634,682$5.29M0.01%+283,466+80.7%Added
Northern Trust Corp738,155$6.15M0.00%+56,680+8.3%Added
Renaissance Technologies LLC746,500$6.22M0.01%+746,500New
Sumitomo Mitsui Trust Holdings, Inc.785,519$6.54M0.00%−89,404−10.2%Reduced
Nikko Asset Management Americas, Inc.785,519$6.57M0.03%−89,404−10.2%Reduced
Ikarian Capital, LLC795,903$6.63M1.90%+189,349+31.2%Added
Geode Capital Management, LLC1,237,362$10.3M0.00%+282,018+29.5%Added
Goldman Sachs Group Inc1,238,450$10.3M0.00%+666,935+116.7%Added
Millennium Management LLC1,264,486$10.5M0.01%+976,368+338.9%Added
Jacobs Levy Equity Management, Inc1,290,297$10.7M0.07%+1,290,297New
Vanguard Group Inc4,676,265$39.0M0.00%+719,993+18.2%Added
State Street Corp4,785,589$39.9M0.00%−5,217,802−52.2%Reduced
Janus Henderson Group PLC5,055,099$42.1M0.02%+716,298+16.5%Added
BlackRock Inc.5,862,691$48.8M0.00%+19,884+0.3%Added
Federated Hermes, Inc.6,914,136$57.6M0.11%−267,964−3.7%Reduced
FMR LLC13,777,070$114.8M0.01%+19,285+0.1%Added
Flagship Pioneering Inc.14,378,802$119.8M1.85%00.0%Unchanged
AXA S.A.0$00.00%−281,300−100.0%Sold out
Walleye Capital LLC0$00.00%−217,662−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−200,028−100.0%Sold out
AlphaCentric Advisors LLC0$00.00%−165,500−100.0%Sold out
LMR Partners LLP0$00.00%−145,100−100.0%Sold out
First Trust Advisors LP0$00.00%−68,940−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−63,919−100.0%Sold out
TD Asset Management Inc0$00.00%−41,725−100.0%Sold out
HAP Trading, LLC0$00.00%−40,044−100.0%Sold out
Handelsbanken Fonder AB0$00.00%−36,500−100.0%Sold out
Bank Julius Baer & Co. Ltd, Zurich0$00.00%−36,249−100.0%Sold out
Walleye Trading LLC0$00.00%−35,591−100.0%Sold out
Cowen and Company, LLC0$00.00%−12,490−100.0%Sold out
KBC Group NV0$00.00%−5,240−100.0%Sold out
Gilder Gagnon Howe & Co LLC0$00.00%−3,380−100.0%Sold out
Caption Management, LLC0$00.00%−3,250−100.0%Sold out
Penserra Capital Management LLC0$00.00%−2,100−100.0%Sold out
Meeder Asset Management Inc0$00.00%−1,403−100.0%Sold out
Evolution Wealth Advisors, LLC0$00.00%−748−100.0%Sold out
Concord Wealth Partners0$00.00%−53−100.0%Sold out
Marshall Wace North America L.P.––––Not filed
Berman Capital Advisors, LLC––––Not filed