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Omeros

127 hedge funds and large institutions have $87.3M invested in Omeros in 2025 Q2 according to their latest regulatory filings, with 17 funds opening new positions, 45 increasing their positions, 35 reducing their positions, and 25 closing their positions.

New
Increased
Maintained
Reduced
Closed

29% more repeat investments, than reductions

Existing positions increased: 45 | Existing positions reduced: 35

2.1% more ownership

Funds ownership: 47.57%49.68% (+2.1%)

7% less funds holding

Funds holding: 136127 (-9)

32% less first-time investments, than exits

New positions opened: 17 | Existing positions closed: 25

55% less call options, than puts

Call options by funds: $1.44M | Put options by funds: $3.19M

61% less capital invested

Capital invested by funds: $227M → $87.3M (-$139M)

Holders
127
Holders Change
-9
Holders Change %
-6.62%
% of All Funds
1.67%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
17
Increased
45
Reduced
35
Closed
25
Calls
$1.44M
Puts
$3.19M
Net Calls
-$1.76M
Net Calls Change
+$434K
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$12.2M -$1.65M -332,144 -8%
ISL
2
Ingalls & Snyder LLC
New York
$11.9M +$25.4K +5,100 +0.1%
Vanguard Group
3
Vanguard Group
Pennsylvania
$9.85M +$231K +46,321 +1%
D.E. Shaw & Co
4
D.E. Shaw & Co
New York
$4.94M -$1.45M -291,102 -15%
Stifel Financial
5
Stifel Financial
Missouri
$4.57M -$168K -33,759 -2%
Geode Capital Management
6
Geode Capital Management
Massachusetts
$4.11M +$3.68K +739 +0.1%
Morgan Stanley
7
Morgan Stanley
New York
$4.07M +$2.96M +595,199 +78%
State Street
8
State Street
Massachusetts
$3.6M -$777K -156,012 -12%
UBS Group
9
UBS Group
Switzerland
$2.61M +$1.04M +207,843 +31%
Marshall Wace
10
Marshall Wace
United Kingdom
$2.22M +$484K +97,224 +15%
Two Sigma Investments
11
Two Sigma Investments
New York
$2.01M +$2.81M +564,580 +534%
Bank of Montreal
12
Bank of Montreal
Ontario, Canada
$1.71M +$39.8K +8,000 +1%
Corient Private Wealth
13
Corient Private Wealth
Florida
$1.59M -$945K -189,808 -26%
DIG
14
DeepCurrents Investment Group
New York
$1.58M +$2.63M +528,129 New
Royal Bank of Canada
15
Royal Bank of Canada
Ontario, Canada
$1.51M +$23.6K +4,745 +1%
Northern Trust
16
Northern Trust
Illinois
$1.45M +$662 +133 +0%
Charles Schwab
17
Charles Schwab
California
$1.44M +$78.7K +15,797 +3%
Two Sigma Advisers
18
Two Sigma Advisers
New York
$1.27M +$2.03M +407,300 +2,628%
Renaissance Technologies
19
Renaissance Technologies
New York
$1.15M +$1.91M +382,700 New
Millennium Management
20
Millennium Management
New York
$808K -$228K -45,831 -15%
Goldman Sachs
21
Goldman Sachs
New York
$762K +$363K +72,809 +40%
Bank of America
22
Bank of America
North Carolina
$753K +$691K +138,759 +124%
Wellington Management Group
23
Wellington Management Group
Massachusetts
$490K +$137K +27,411 +20%
Citadel Advisors
24
Citadel Advisors
Florida
$473K -$76.3K -15,316 -9%
Bank of New York Mellon
25
Bank of New York Mellon
New York
$444K -$15.8K -3,180 -2%

OMER Hedge Fund Activity: Q2 2025 in Review

127 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Omeros (OMER) for Q2 2025, worth a combined $87.3M — down 61% from $227M a quarter earlier.

Sellers outnumbered buyers: 25 funds closed out of OMER and 17 opened new positions — a net loss of 8 holders — while 35 trimmed existing stakes and 45 added.

The largest buyer was Morgan Stanley, adding an estimated $2.96M. The largest seller was Nomura Holdings, cutting an estimated $2.94M.

  • 127 institutional investors held Omeros (OMER) as of Q2 2025, down from 136 in Q1 2025.
  • Funds reported $87.3M of Omeros stock for Q2 2025, down 61% quarter-over-quarter.
  • 17 funds opened new Omeros positions in Q2 2025 and 25 closed out, a net change of -8 holders.
  • The largest Omeros buyer in Q2 2025 was Morgan Stanley, an estimated $2.96M added.
  • The largest Omeros seller in Q2 2025 was Nomura Holdings, an estimated $2.94M sold.

Based on aggregated 13F filings for Q2 2025.