Stock Ownership/MCRB

SERES THERAPEUTI (MCRB): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in MCRB · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
2
13F filers
Aggregate Value
$1.4M
Across holders
Last Price
$4.66
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity2 increased0 reduced1 exited
Full exits: TWO SIGMA INVESTMENTS, LP
Institutional Holders of MCRB
↗
2 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund172K$1.4M94.3%0.0%Added$-605KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund11K$83K5.7%0.0%Added$-387KQ2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$1.4M· 94.3% of total· 0.0% port· 172K sh· $-605K QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$83K· 5.7% of total· 0.0% port· 11K sh· $-387K QoQ· Q2 2026
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