13FBOX
OMEROS CORP · 13F Institutional Holdings
Options Calculator Rankings
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O

OMEROS CORP

OMER
Institutions
175
Combined AUM (Q2 2026)
$398.5M
Combined Shares (Q2 2026)
41.9M
Overall Trend
Increase
All institutions combined
Basis: holder count and combined value / shares merge all share classes of the same company (e.g. Class A / C); each institution is counted once, and value & shares are the sum across classes.
📥 Inflow (Q1 2026→Q2 2026)
+10.6M
110 institutions added · 40 new buys
Est. buy amount
📤 Outflow (Q1 2026→Q2 2026)
-3.3M
64 institutions reduced · 25 exits
Est. sell amount
⚖️ Net Share Change
+7.4M
Net Buy
💰 Est. Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$398.5M
Institutions
175
New Buys
40
Adds
70
Reduces
39
Exits
25
Unchanged
26
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
BlackRock, Inc.
<0.01%<0.01%#81$57.5M6.0M$56.1M5.3M+735,007+13.84%Add
INGALLS & SNYDER LLC
0.95%1.33%#2$34.8M3.7M$37.6M3.6M+100,100+2.81%Add
UBS Group AG
<0.01%<0.01%#44$29.9M3.1M$24.7M2.3M+807,653+34.50%Add
VANGUARD CAPITAL MANAGEMENT LLC
<0.01%<0.01%#90$29.2M3.1M$31.5M3.0M+88,791+2.98%Add
STATE STREET CORP
<0.01%<0.01%#89$22.1M2.3M$20.3M1.9M+400,331+20.86%Add
SUSQUEHANNA INTERNATIONAL GROUP, LLP
<0.01%<0.01%#61$21.1M2.2M$14.8M1.4M+811,064+57.76%Add
GEODE CAPITAL MANAGEMENT, LLC
<0.01%<0.01%#76$18.2M1.9M$18.5M1.8M+162,137+9.25%Add
STIFEL FINANCIAL CORP
0.01%0.02%#23$17.5M1.8M$19.3M1.8M+5,340+0.29%Add
Affinity Asset Advisors, LLC
0.61%#3$13.4M1.4M$00+1.4MNew Buy
VANGUARD PORTFOLIO MANAGEMENT LLC
<0.01%<0.01%#100$9.2M962,828$7.6M718,675+244,153+33.97%Add
CITADEL ADVISORS LLC
<0.01%<0.01%#79$7.9M829,994$7.5M714,148+115,846+16.22%Add
Invesco Ltd.
<0.01%<0.01%#93$7.1M751,771$1.9M180,629+571,142+316.20%Add
NORTHERN TRUST CORP
<0.01%<0.01%#82$6.9M727,348$6.0M563,867+163,481+28.99%Add
Rock Springs Capital Management LP
0.33%#4$6.8M718,499$00+718,499New Buy
Corient Private Wealth LLC
<0.01%0.01%#39$6.3M659,730$8.5M801,411-141,681-17.68%Reduce
Rubric Capital Management LP
0.06%#10$6.2M656,874$00+656,874New Buy
Caption Management, LLC
0.03%#20$5.8M614,500$00+614,500New Buy
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
<0.01%<0.01%#85$5.8M604,633$6.2M582,512+22,121+3.80%Add
BANK OF MONTREAL /CAN/
<0.01%<0.01%#58$5.4M568,424$6.0M568,426-2-0.00%Reduce
VANGUARD FIDUCIARY TRUST CO
<0.01%<0.01%#74$4.7M491,173$5.2M492,345-1,172-0.24%Reduce
FEDERATED HERMES, INC.
0.01%#31$4.5M478,290$00+478,290New Buy
Clutterbuck Capital Management LLC
2.46%1.93%#1$4.3M450,000$3.2M300,000+150,000+50.00%Add
TWO SIGMA INVESTMENTS, LP
<0.01%<0.01%#50$3.8M402,662$3.0M286,474+116,188+40.56%Add
MORGAN STANLEY
<0.01%<0.01%#120$3.8M394,459$8.2M2.0M-1.6M-80.18%Reduce
JANE STREET GROUP, LLC
<0.01%<0.01%#109$3.3M345,866$3.7M351,807-5,941-1.69%Reduce
GROUP ONE TRADING LLC
<0.01%<0.01%#41$3.3M344,297$2.5M232,804+111,493+47.89%Add
MILLENNIUM MANAGEMENT LLC
<0.01%<0.01%#72$3.3M343,839$4.3M410,609-66,770-16.26%Reduce
Badgley Phelps Wealth Managers, LLC
0.04%0.06%#14$2.5M263,556$2.8M263,55600.00%Unchanged
SIMPLEX TRADING, LLC
<0.01%<0.01%#65$2.2M236,059$1.7M163,726+72,333+44.18%Add
WELLINGTON MANAGEMENT GROUP LLP
<0.01%<0.01%#104$1.9M204,541$2.0M187,300+17,241+9.21%Add
Bank of New York Mellon Corp
<0.01%<0.01%#107$1.9M195,990$1.8M166,246+29,744+17.89%Add
BANK OF AMERICA CORP /DE/
<0.01%<0.01%#131$1.8M194,140$2.2M204,805-10,665-5.21%Reduce
Nuveen, LLC
<0.01%<0.01%#102$1.6M169,952$1.6M154,201+15,751+10.21%Add
Ancora Advisors LLC
0.03%0.04%#19$1.6M168,750$1.2M115,000+53,750+46.74%Add
GOLDMAN SACHS GROUP INC
<0.01%<0.01%#127$1.5M157,008$2.1M202,893-45,885-22.62%Reduce
WELLS FARGO & COMPANY/MN
<0.01%<0.01%#112$1.5M156,889$1.2M118,343+38,546+32.57%Add
LMR Partners LLP
0.01%<0.01%#38$1.4M145,600$112,29510,634+134,966+1,269.19%Add
Swiss National Bank
<0.01%#87$1.3M137,300$00+137,300New Buy
Virtus Investment Advisers, LLC
0.29%0.08%#5$1.3M133,129$283,69426,865+106,264+395.55%Add
PRICE T ROWE ASSOCIATES INC /MD/
<0.01%<0.01%#129$1.2M129,550$1.1M107,293+22,257+20.74%Add
HRT FINANCIAL LP
<0.01%#53$1.1M118,700$00+118,700New Buy
MML INVESTORS SERVICES, LLC
<0.01%<0.01%#51$1.1M118,175$609,04857,675+60,500+104.90%Add
AMERIPRISE FINANCIAL INC
<0.01%<0.01%#115$1.1M117,456$1.2M117,948-492-0.42%Reduce
HighTower Advisors, LLC
<0.01%<0.01%#73$1.1M115,368$1.2M110,630+4,738+4.28%Add
RHUMBLINE ADVISERS
<0.01%<0.01%#83$1.0M110,271$1.1M102,818+7,453+7.25%Add
PEAK6 LLC
<0.01%#55$951,000100,000$00+100,000New Buy
Brevan Howard Capital Management LP
0.01%<0.01%#36$932,42798,047$540,28151,163+46,884+91.64%Add
Walleye Capital LLC
<0.01%0.01%#48$900,35094,674$1.5M141,033-46,359-32.87%Reduce
Cambridge Investment Research Advisors, Inc.
<0.01%<0.01%#54$878,75392,403$935,00088,568+3,835+4.33%Add
COLDSTREAM CAPITAL MANAGEMENT INC
0.01%0.01%#33$805,90684,743$571,61354,130+30,613+56.55%Add

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow