AI summary pending
View Full Filing (SEC EDGAR)Omeros CORP
$18.86+0.6%
+$122.7M
Net Activity
+30.49% total shares
Institutions Holding
177
Popularity Rank
#3304
Avg Weight
0.03%
Total Value
$473.2M
177 institutions currently hold OMER, with 110 net buyers and 66 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
66
Net Buying Institutions
110
Top 5 by Value
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Across its top 20 institutional holders, OMER's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 7/100, avg. turnover score 45/100).
OMER ranks #3304 out of 37503 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
177 institutions disclose a position in OMER, but none treat it as a major bet — even Clutterbuck Capital Management LLC, its most concentrated holder, allocates just 2.4% of its own portfolio to it.
Clutterbuck Capital Management LLC has added to its OMER position for two straight quarters, increasing it by $1.7M to reach $4.3M today.
Ingalls & Snyder LLC has trimmed its OMER position for two straight quarters, cutting it by $24.4M while still holding $34.8M.
OMER is up 0.6% today, and institutions have been net buyers of $122.7M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
OMER posted net income of $124.8M over the trailing twelve months.
+$181.4M
Total Buy Value
$19.6M
Total Sell Value
110
Net Buyers
66
Net Sellers
OMER
Q2 2026
Top 5 Institutional Movers
+$13.4M
+$6.2M
OMER does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
6
Filings (90d)
$1.30M
Total Est. Value
71K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| PETER CANCELMO | 2026-08-28 | $466K |
| ARNOLD HANISH | 2026-08-27 | $189K |
| ARNOLD HANISH | 2026-08-26 | $94K |
| DAVID BORGES | 2026-08-21 | $203K |
| THOMAS CABLE | 2026-08-20 | $277K |
| DAVID BORGES | 2026-08-13 | $69K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| BlackRock, Inc. | 13G/A | 2026-07-29 | 8.2% |
5
Filings (14d)
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The most-added stocks by 13F institutions this quarter
Institutions Holding
6,242
Total reported value
$2.2T
3229 13F institutions increased their position this quarter
Institutions Holding
5,990
Total reported value
$3.6T
3033 13F institutions increased their position this quarter
Institutions Holding
6,153
Total reported value
$1.8T
2971 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,763
Total reported value
$1.2T
Held by 4763 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,691
Total reported value
$473.3B
Held by 4691 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,637
Total reported value
$985.7B
Held by 4637 institutions — one of the most-tracked stocks on AlphaSMO
Access OMER's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/OMERCLI
npx alphasmo stocks get OMERFull API & MCP documentation →