Stock Ownership/HBIO

HARVARD BIOSCIENCE INC (HBIO): Ownership & Insider Activity

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

Reported Holders
4
13F filers
Aggregate Value
$1.6M
Across holders
Last Price
$8.13
2026-10-08
Sector
Health Care
GICS
Quarterly fund activity2 increased2 reduced0 exited
Institutional Holders of HBIO
↗
4 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund115K$704K44.1%0.0%Added+$3KQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund99K$611K38.2%0.0%Reduced$-13KQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund33K$201K12.6%0.0%Reduced$-84KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund13K$81K5.1%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$704K· 44.1% of total· 0.0% port· 115K sh· +$3K QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$611K· 38.2% of total· 0.0% port· 99K sh· $-13K QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$201K· 12.6% of total· 0.0% port· 33K sh· $-84K QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$81K· 5.1% of total· 0.0% port· 13K sh· — QoQ· Q2 2026
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