OMER Omeros Corp

NASDAQ
$20.08

Omeros Corp (OMER) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
-11.11
8 buyers / 10 sellers
SELLING
Funds compared
18
funds with comparable OMER positions
12 current holders · 13 prior-quarter holders
Net share change
+1.12M
+1.79M added, -668.0K cut
Position activity
5 new 3 increased 4 reduced 6 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Rubric Capital Management Event New +656.9K — $6.2M 0.1% 61
Farallon Capital Management Event Value Sold Out -23.0K -100.0% $218.7K 0.0% 60
D. E. Shaw & Co., Inc. Quant Sold Out -71.2K -100.0% $676.8K 0.0% 58
Rock Springs Capital Management Growth Healthcare New +718.5K — $6.8M 0.3% 57
MARSHALL WACE, LLP Long/Short Sold Out -83.7K -100.0% $795.8K 0.0% 56
Polar Asset Management Partners Long/Short Sold Out -200.0K -100.0% $1.9M 0.0% 56
Squarepoint Ops LLC Quant New +55.0K — $523.3K 0.0% 54
LMR Partners Event Quant Sold Out -10.6K -100.0% $101.1K 0.0% 53
Caption Management Quant New +130.0K — $1.2M 0.0% 52
Balyasny Asset Management L.P. Increased +54.5K +187.3% $518.1K 0.0% 51

Most significant buyers

By move score, not size.

  • Rubric Capital Management New · +656.9K
  • Rock Springs Capital Management New · +718.5K
  • Squarepoint Ops LLC New · +55.0K
  • Caption Management New · +130.0K
  • Balyasny Asset Management L.P. Increased · +54.5K

Most significant sellers

By move score, not size.

  • Farallon Capital Management Sold Out · -23.0K
  • D. E. Shaw & Co., Inc. Sold Out · -71.2K
  • MARSHALL WACE, LLP Sold Out · -83.7K
  • Polar Asset Management Partners Sold Out · -200.0K
  • LMR Partners Sold Out · -10.6K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Rubric Capital Management 1 656.9K 0 +656.9K — 0.1% New 61
Farallon Capital Management 1 0 23.0K -23.0K -100.0% 0.0% Sold Out 60
D. E. Shaw & Co., Inc. 1 0 71.2K -71.2K -100.0% 0.0% Sold Out 58
Rock Springs Capital Management 3 718.5K 0 +718.5K — 0.3% New 57
MARSHALL WACE, LLP 2 0 83.7K -83.7K -100.0% 0.0% Sold Out 56
Polar Asset Management Partners 3 0 200.0K -200.0K -100.0% 0.0% Sold Out 56
Squarepoint Ops LLC 2 55.0K 0 +55.0K — 0.0% New 54
LMR Partners 3 0 10.6K -10.6K -100.0% 0.0% Sold Out 53
Caption Management 3 130.0K 0 +130.0K — 0.0% New 52
Balyasny Asset Management L.P. 2 83.6K 29.1K +54.5K +187.3% 0.0% Increased 51
Engineers Gate 4 14.5K 0 +14.5K — 0.0% New 48
CITADEL ADVISORS LLC 1 85.6K 260.0K -174.5K -67.1% 0.0% Reduced 46
Quantbot Technologies 4 0 3.7K -3.7K -100.0% 0.0% Sold Out 45
Walleye Capital 3 374 34.5K -34.2K -98.9% 0.0% Reduced 45
Brevan Howard Capital Management 3 98.0K 51.2K +46.9K +91.6% 0.0% Increased 41
TWO SIGMA INVESTMENTS, LP 2 402.7K 286.5K +116.2K +40.6% 0.0% Increased 38
MILLENNIUM MANAGEMENT LLC 2 343.8K 410.6K -66.8K -16.3% 0.0% Reduced 30
AQR Capital Management 3 29.7K 30.2K -452 -1.5% 0.0% Reduced 20

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

Sign in or subscribe

Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.