OMER Institutional Ownership
Who owns Omeros Corp and what the big funds did with it last quarter, from every SEC 13F filing. 174 funds reported holding OMER at Jun 30, 2026, together owning 55.9% of the company.
- ▲102 buying vs 64 selling
- ▲Held by funds +7.5 pts
- ▲Funds holding +11
- ▼Superinvestors: 0 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 174 | 163 | +6.7% |
| In funds' top 10 | 2 | 2 | 0.0% |
| 13F shares | 40.4M | 35M | +15.5% |
| Held by funds | 55.9% | 48.4% | +7.5 pts |
| New positions | 34 | 32 | +6.3% |
| Increased | 68 | 62 | +9.7% |
| Reduced | 39 | 41 | −4.9% |
| Sold out | 25 | 25 | 0.0% |
| Calls (shares) | 161K | 46K | +246.7% |
| Puts (shares) | 2M | 104K | +1801.1% |
| Put/call ratio | 12.31 | 2.24 | +448.4% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in OMER
All superinvestors →
Who owns OMER
share of fund held shares- Index and passive funds42.2%
- Active managers and hedge funds37.7%
- Banks and brokers19.5%
- Pensions, insurers and other0.6%
The top 10 holders own 68.9% of all OMER shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
32 funds changed their position- Cambridge Investment Research Advisors, Inc.Trimmed−104K sh
- Profund Advisors LLCAdded+54K sh
- NFSG CorpTrimmed−44K sh
- American Capital Advisory, LLCNew+44K sh
- Wealth Enhancement Advisory Services, LLCNew+30K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.35% | 6M | $57.5M | +735K |
| 2 | Clutterbuck Capital Management LLC | 5.76% | 4.2M | $7.7M | 0 |
| 3 | Ingalls & Snyder LLC | 5.06% | 3.7M | $34.8M | +100K |
| 4 | UBS Group AG | 4.35% | 3.1M | $29.9M | +808K |
| 5 | Vanguard Capital Management LLC | 4.24% | 3.1M | $29.2M | +89K |
| 6 | State Street Corp | 3.20% | 2.3M | $22.1M | +400K |
| 7 | Geode Capital Management, LLC | 2.64% | 1.9M | $18.2M | +162K |
| 8 | Stifel Financial Corp | 2.54% | 1.8M | $17.5M | +5,340 |
| 9 | Vanguard Portfolio Management LLC | 1.33% | 963K | $9.2M | +244K |
| 10 | Invesco Ltd. | 1.04% | 752K | $7.1M | +571K |
- UBS Group AG+808K sh+$7.7M
- BlackRock, Inc.+735K sh+$7M
- Rock Springs Capital Management LP+718K sh+$6.8M
- Rubric Capital Management LP+657K sh+$6.2M
- Invesco Ltd.+571K sh+$5.4M
- Federated Hermes, Inc.+478K sh+$4.5M
- State Street Corp+400K sh+$3.8M
- Vanguard Portfolio Management LLC+244K sh+$2.3M
- Polar Asset Management Partners Inc.−200K sh−$2.1M
- Jump Financial, LLC−196K sh−$2.1M
- Dimensional Fund Advisors LP−180K sh−$1.9M
- Prosight Management, LP−175K sh−$1.8M
- Citadel Advisors LLC−174K sh−$1.7M
- Susquehanna International Group, LLP−160K sh−$1.5M
- Corient Private Wealth LP−142K sh−$1.3M
- Jane Street Group, LLC−125K sh−$1.2M
OMER institutional ownership FAQ
Who owns the most OMER stock?
In Q2 2026 13F filings the largest holder of OMER was BlackRock, Inc., followed by Clutterbuck Capital Management LLC and Ingalls & Snyder LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of OMER is owned by institutions?
Funds that file 13F reports held 55.9% of OMER's shares at Jun 30, 2026, compared with 48.4% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying OMER?
In Q2 2026, 102 funds bought OMER (34 of them new positions) and 64 sold (25 sold out completely). Among well known investors, 0 added and 2 cut. Our fund sentiment for OMER is bullish.
What is OMER's institutional put/call ratio?
Funds reported $18.8M of OMER puts against $1.5M of calls, a put/call ratio of 12.31 (2.24 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this OMER ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.