Which hedge funds own OMER? OMEROS CORP, Q2 2026 13F holders
18 tracked hedge funds disclosed a position in OMER (OMEROS CORP) in their Q2 2026 13F filings, worth $30.7m in total. The largest holder by portfolio weight is Clutterbuck Capital Management LLC at 2.5% of its book. 8 opened a new position this quarter: Rock Springs Capital Management LP, Rubric Capital Management LP, Caption Management, LLC, Atom Investors LP. 7 exited: Prosight Management, LP, Polar Asset Management Partners Inc., Gsa Capital Partners LLP.
- 18
- Holders Tracked managers whose filing for the quarter reports a long equity position in the security.
- 8
- New this quarter Holders whose previous filing (at most two quarters earlier) did not report the security.
- 7
- Exited this quarter Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
- $15.9m
- Inflow, new holders Combined value of the positions the new holders reported for the quarter.
- $6.1m
- Outflow, exits Combined value the exiting managers reported for the security in their previous filing.
- $30.7m
- Combined value Sum of the holders' reported positions in the security.
- 1.5%
- Share of managers holding Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.
Holders, Q2 2026
| Clutterbuck Capital Management LLC Hedge fund | 2.5% | +50% | added |
| Rock Springs Capital Management LP Hedge fund | 0.3% | – | new |
| Rubric Capital Management LP Hedge fund | 0.06% | – | new |
| Caption Management, LLC Hedge fund | 0.04% | – | new |
| Diametric Capital, LP Hedge fund | 0.03% | +13% | added |
| Atom Investors LP Hedge fund | 0.02% | – | new |
| Brevan Howard Capital Management LP Hedge fund | 0.01% | +92% | added |
| DeepCurrents Investment Group LLC Hedge fund | 0.01% | +65% | added |
| Jupiter Asset Management Ltd Hedge fund | 0.0% | – | new |
| Persistent Asset Partners Ltd Hedge fund | 0.0% | – | new |
| Two Sigma Investments, LP Hedge fund | 0.0% | +41% | added |
| Millennium Management LLC Hedge fund | 0.0% | −16% | reduced |
| Engineers Gate Manager LP Hedge fund | 0.0% | – | new |
| Balyasny Asset Management L.P. Hedge fund | 0.0% | +187% | added |
| Squarepoint Ops LLC Hedge fund | 0.0% | – | new |
| Citadel Advisors LLC Hedge fund | 0.0% | −67% | reduced |
| AQR Capital Management LLC Hedge fund | 0.0% | −1.5% | reduced |
| Walleye Capital LLC Hedge fund | 0.0% | −99% | reduced |
Exited since the previous filing
| Prosight Management, LP | 0.3% | $1.8m |
| Polar Asset Management Partners Inc. | 0.05% | $2.1m |
| Gsa Capital Partners LLP | 0.02% | $253k |
| Quantbot Technologies LP | 0.0% | $38.5k |
| Farallon Capital Management, L.L.C. | 0.0% | $243k |
| Marshall Wace, LLP | 0.0% | $884k |
| D. E. Shaw & Co., Inc. | 0.0% | $752k |
Ownership over time
Who discovered OMER first? Beta
The run: Q3 2025 → Q4 2025, +319%
| RA Capital Management, L.P. | Q2 2013 | – | +1.9 pts |
| Cormorant Asset Management, LP high conviction | Q2 2014 | – | +1.7 pts |
| RTW Investments, LP high conviction | Q4 2015 | – | −1.1 pts |
Split-adjusted quarter-end prices, excluding dividends. They describe the stock while each manager held it, not the return it earned.