SERES THERAPEUTICS INC MCRB

US Healthcare Pharmaceutical Preparations
$7.74
-2.5%
52w: $5.62 – $28.63

Latest 13F among current holders filed 1 month ago (May 15, 2026)

Price — last 12 months

research preview data
5.6217.1228.63
Jun 20, 2025 Jul 2, 2026
Institutional holders
33
-4 QoQ
13F value
$20.5M
-45.2% QoQ
Smart-money holders
2
signal tier ≥ 2
New smart buyers
0
Q1 2026
Options barometer
0.7×
$958K calls / $1.3M puts

Institutional value by quarter

$84.5M
Q1 2024
$50.0M
Q2 2024
$60.1M
Q3 2024
$52.5M
Q4 2024
$43.1M
Q1 2025
$25.5M
Q2 2025
$40.9M
Q3 2025
$37.3M
Q4 2025
$20.5M
Q1 2026

Number of holders

100
Q1 2024
94
Q2 2024
78
Q3 2024
70
Q4 2024
64
Q1 2025
33
Q2 2025
32
Q3 2025
37
Q4 2025
33
Q1 2026

Who owns MCRB?

Q1 2026 filings
FundTypeSharesValue% of fundChange
Flagship Pioneering, LLC ★2Fundamental diversified1.2M$10.3M0.9%Held
VANGUARD CAPITAL MANAGEMENT LLC Diversified mechanical294.1K$2.6M0.0%
MARSHALL WACE, LLP Quant stat arb139.5K$1.2M0.0%+16.1%
Vontobel Holding Ltd. Diversified mechanical138.5K$1.2M0.0%+34.1%
SUSQUEHANNA INTERNATIONAL GROUP, LLP Market maker105.3K$934K0.0%-41.5%
BlackRock, Inc. Index provider102.0K$905K0.0%-1.5%
GEODE CAPITAL MANAGEMENT, LLC Index provider74.8K$664K0.0%-13.1%
AMERICAN CENTURY COMPANIES INC Diversified mechanical62.3K$553K0.0%+283.0%
VANGUARD FIDUCIARY TRUST CO Diversified mechanical39.6K$352K0.0%
STATE STREET CORP Index provider33.9K$301K0.0%Held
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Index provider31.6K$281K0.0%+0.8%
Lion Point Capital, LP ★3Fundamental concentrated31.6K$280K1.7%Held
MORGAN STANLEY Bank broker21.7K$192K0.0%-13.6%
TWO SIGMA INVESTMENTS, LP Quant stat arb18.8K$167K0.0%-27.0%
NORTHERN TRUST CORP Index provider14.8K$131K0.0%Held
Invesco Ltd. Index provider14.5K$129K0.0%+1.3%
UBS Group AG Bank broker7.0K$62K0.0%+66.4%
BARCLAYS PLC Bank broker6.5K$58K0.0%-12.4%
SBI Securities Co., Ltd. Diversified mechanical3.5K$31K0.0%Held
SIMPLEX TRADING, LLC Market maker3.1K$27K0.0%+149.2%
Vanguard Global Advisers, LLC Diversified mechanical2.0K$18K0.0%
FMR LLC Long only active1.8K$16K0.0%+0.7%
Rachor Investment Advisory Services, LLC Wealth advisor1.5K$13K0.0%Held
GROUP ONE TRADING LLC Market maker824$7K0.0%New
Tower Research Capital LLC (TRC) Market maker794$7K0.0%New
BNP PARIBAS FINANCIAL MARKETS Bank broker211$2K0.0%-72.7%
Physician Wealth Advisors, Inc. Wealth advisor142$1K0.0%Held
ROYAL BANK OF CANADA Bank broker107$1K0.0%+1088.9%
WELLS FARGO & COMPANY/MN Bank broker10$890.0%-96.2%
Sound Income Strategies, LLC Diversified mechanical8$710.0%Held
OSAIC HOLDINGS, INC. Wealth advisor8$700.0%Held
Allworth Financial LP Wealth advisor4$360.0%Held
Arax Advisory Partners Wealth advisor6$180.0%+200.0%

Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.