OABI OmniAb, Inc.

NASDAQ
$4.44

OmniAb, Inc. (OABI) 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
+66.67
15 buyers / 3 sellers
STRONG BUYING
Funds compared
18
funds with comparable OABI positions
17 current holders · 9 prior-quarter holders
Net share change
+3.29M
+3.53M added, -236.5K cut
Position activity
9 new 6 increased 2 reduced 1 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
Point72 Asset Management, L.P. Sold Out -16.2K -100.0% $39.9K 0.0% 59
Sculptor Capital Management Event Long/Short New +293.8K — $722.8K 0.0% 56
Aristeia Capital Event Long/Short New +679.9K — $1.7M 0.0% 56
Hudson Bay Capital Management Event New +465.2K — $1.1M 0.0% 55
Qube Research & Technologies Ltd Quant New +20.2K — $49.7K 0.0% 55
LMR Partners Event Quant New +897.4K — $2.2M 0.0% 55
Wolverine Asset Management Event Quant New +27.6K — $68.0K 0.0% 54
Saba Capital Management Event New +18.0K — $44.3K 0.0% 53
Quadrature Capital Quant New +19.5K — $48.0K 0.0% 52
RENAISSANCE TECHNOLOGIES LLC Quant Increased +330.8K +122.7% $813.6K 0.0% 52

Most significant buyers

By move score, not size.

  • Sculptor Capital Management New · +293.8K
  • Aristeia Capital New · +679.9K
  • Hudson Bay Capital Management New · +465.2K
  • Qube Research & Technologies Ltd New · +20.2K
  • LMR Partners New · +897.4K

Most significant sellers

By move score, not size.

  • Point72 Asset Management, L.P. Sold Out · -16.2K
  • CITADEL ADVISORS LLC Reduced · -170.5K
  • MILLENNIUM MANAGEMENT LLC Reduced · -49.8K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Point72 Asset Management, L.P. 1 0 16.2K -16.2K -100.0% 0.0% Sold Out 59
Sculptor Capital Management 2 293.8K 0 +293.8K — 0.0% New 56
Aristeia Capital 2 679.9K 0 +679.9K — 0.0% New 56
Hudson Bay Capital Management 3 465.2K 0 +465.2K — 0.0% New 55
Qube Research & Technologies Ltd 2 20.2K 0 +20.2K — 0.0% New 55
LMR Partners 3 897.4K 0 +897.4K — 0.0% New 55
Wolverine Asset Management 2 27.6K 0 +27.6K — 0.0% New 54
Saba Capital Management 3 18.0K 0 +18.0K — 0.0% New 53
Quadrature Capital 3 19.5K 0 +19.5K — 0.0% New 52
RENAISSANCE TECHNOLOGIES LLC 1 600.4K 269.6K +330.8K +122.7% 0.0% Increased 52
Walleye Capital 3 144.4K 0 +144.4K — 0.0% New 51
Squarepoint Ops LLC 2 35.4K 10.0K +25.3K +252.4% 0.0% Increased 48
CITADEL ADVISORS LLC 1 58.2K 228.7K -170.5K -74.6% 0.0% Reduced 45
D. E. Shaw & Co., Inc. 1 559.4K 380.3K +179.2K +47.1% 0.0% Increased 39
TWO SIGMA INVESTMENTS, LP 2 657.4K 512.7K +144.7K +28.2% 0.0% Increased 33
ADAR1 Capital Management 3 947.4K 705.2K +242.2K +34.3% 0.1% Increased 31
AQR Capital Management 3 157.7K 115.6K +42.1K +36.4% 0.0% Increased 29
MILLENNIUM MANAGEMENT LLC 2 474.2K 523.9K -49.8K -9.5% 0.0% Reduced 29

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.

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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.