Stock Ownership/HSTM

HEALTHSTREAM INC (HSTM): Ownership & Insider Activity

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

Reported Holders
12
13F filers
Aggregate Value
$77.2M
Across holders
Last Price
$28.78
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity5 increased6 reduced4 exited
Full exits: Verition Fund Management LLC, BALYASNY ASSET MANAGEMENT LLC, Schonfeld Strategic Advisors LLC, Brevan Howard Capital Management LP
Institutional Holders of HSTM
↗
12 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund806K$22.0M28.4%0.0%Reduced$-1.1MQ2 2026
First Eagle Investment Management, LLC
CIK 0001325447
Institutional Manager592K$16.1M20.9%0.0%Added+$4.5MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund434K$11.8M15.3%0.0%Added+$1.5MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund423K$11.5M14.9%0.0%Reduced$-1.5MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund240K$6.5M8.5%0.0%Added+$6.5MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund143K$3.9M5.0%0.0%Added+$3.6MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund121K$3.3M4.3%0.0%Reduced$-1.5MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund32K$882K1.1%0.0%Unchanged+$0Q2 2026
Walleye Capital LLC
CIK 0001758720
Hedge Fund14K$379K0.5%0.0%Reduced$-547KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund10K$283K0.4%0.0%Reduced$-1.4MQ2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$22.0M· 28.4% of total· 0.0% port· 806K sh· $-1.1M QoQ· Q2 2026
First Eagle Investment Management, LLCAdded
Institutional Manager
$16.1M· 20.9% of total· 0.0% port· 592K sh· +$4.5M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$11.8M· 15.3% of total· 0.0% port· 434K sh· +$1.5M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$11.5M· 14.9% of total· 0.0% port· 423K sh· $-1.5M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$6.5M· 8.5% of total· 0.0% port· 240K sh· +$6.5M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$3.9M· 5.0% of total· 0.0% port· 143K sh· +$3.6M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$3.3M· 4.3% of total· 0.0% port· 121K sh· $-1.5M QoQ· Q2 2026
MARSHALL WACE, LLPUnchanged
Hedge Fund
$882K· 1.1% of total· 0.0% port· 32K sh· +$0 QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$379K· 0.5% of total· 0.0% port· 14K sh· $-547K QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$283K· 0.4% of total· 0.0% port· 10K sh· $-1.4M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$256K· 0.3% of total· 0.0% port· 9K sh· $-115K QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$222K· 0.3% of total· 0.0% port· 8K sh· — QoQ· Q2 2026
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