13F Insight
DOSSIER · 13F Holders · Q1 2026Inflation hedgeYield
OMER

OMEROS CORP

169 institutions still hold OMEROS CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 682143102·169 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.5%
vs prior quarter
13F value held
$289M
72.0% inst. owned
of float
Holders
169
-64 QoQ
filers reporting
Activity
+51 / −7
+909 added · −797 reduced
this quarter
Concentration
19.37%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

169 institutions reported OMER in Q1 2026. BlackRock, Inc. leads at 19.4% of the visible book. -64 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$56M5.3M0.00%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$32M3.0M0.00%Q1 202603
UBS Group AG
CIK 0001610520
$25M2.3M0.00%Q1 202604
STATE STREET CORP
CIK 0000093751
$20M1.9M0.00%Q1 202605
KOTLER KEVIN
CIK 0001601692
$19M1.1M4.53%Q4 202506
STIFEL FINANCIAL CORP
CIK 0000720672
$19M1.8M0.02%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$19M1.8M0.00%Q1 202608
CITADEL ADVISORS LLC
CIK 0001423053
$18M1.0M0.00%Q4 202509
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$15M1.4M0.00%Q1 202610
D. E. Shaw & Co., Inc.
CIK 0001009207
$13M755K0.01%Q4 202511
Corient Private Wealth LLC
CIK 0001948780
$8M801K0.01%Q1 202612
Vanguard Portfolio Management
CIK 0002100121
$8M719K0.00%Q1 202613
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$6M583K0.00%Q1 202614
BANK OF MONTREAL /CAN/
CIK 0000927971
$6M568K0.00%Q1 202615
NORTHERN TRUST CORP
CIK 0000073124· Index
$6M564K0.00%Q1 202616
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$5M492K0.00%Q1 202617
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$4M411K0.00%Q1 202618
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$4M352K0.00%Q1 202619
MORGAN STANLEY
CIK 0000895421
$3M318K0.00%Q1 202620
Clutterbuck Capital Management LLC
CIK 0001517638
$3M300K1.93%Q1 2026
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