Stock Ownership/OMER

OMEROS CORP (OMER): Ownership & Insider Activity

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

Reported Holders
11
13F filers
Aggregate Value
$12.8M
Across holders
Last Price
$19.32
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity6 increased5 reduced3 exited
Full exits: FARALLON CAPITAL MANAGEMENT LLC, MARSHALL WACE, LLP, SHAW D E & CO INC
Institutional Holders of OMER
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11 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund403K$3.8M30.0%0.0%Added+$1.1MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund344K$3.3M25.6%0.0%Reduced$-635KQ2 2026
Ancora Advisors, LLC
CIK 0001446114
Hedge Fund169K$1.6M12.6%0.0%Added+$1.6MQ2 2026
Brevan Howard Capital Management LP
CIK 0001512857
Hedge Fund98K$932K7.3%0.0%Added+$446KQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund86K$814K6.4%0.0%Reduced$-1.3MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund84K$795K6.2%0.0%Added+$518KQ2 2026
JUPITER ASSET MANAGEMENT LTD
CIK 0001215838
Hedge Fund76K$725K5.7%0.0%Added—Q2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund55K$523K4.1%0.0%Added—Q2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund30K$283K2.2%0.0%Reduced+$282KQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund460$4K0.0%0.0%Reduced$-10KQ2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$3.8M· 30.0% of total· 0.0% port· 403K sh· +$1.1M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$3.3M· 25.6% of total· 0.0% port· 344K sh· $-635K QoQ· Q2 2026
Ancora Advisors, LLCAdded
Hedge Fund
$1.6M· 12.6% of total· 0.0% port· 169K sh· +$1.6M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$932K· 7.3% of total· 0.0% port· 98K sh· +$446K QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$814K· 6.4% of total· 0.0% port· 86K sh· $-1.3M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$795K· 6.2% of total· 0.0% port· 84K sh· +$518K QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDAdded
Hedge Fund
$725K· 5.7% of total· 0.0% port· 76K sh· — QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$523K· 4.1% of total· 0.0% port· 55K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$283K· 2.2% of total· 0.0% port· 30K sh· +$282K QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$4K· 0.0% of total· 0.0% port· 460 sh· $-10K QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$4K· 0.0% of total· 0.0% port· 374 sh· $-774K QoQ· Q2 2026
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