GOSS Gossamer Bio, Inc.

NASDAQ
$10.73

Gossamer Bio, Inc. (GOSS) 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
+37.50
11 buyers / 5 sellers
STRONG BUYING
Funds compared
17
funds with comparable GOSS positions
15 current holders · 13 prior-quarter holders
Net share change
+70.63M
+79.05M added, -8.42M cut
Position activity
4 new 7 increased 3 reduced 2 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
Wolverine Asset Management Event Quant New +12.89M — $2.1M 0.1% 56
MARSHALL WACE, LLP Long/Short New +2.11M — $348.1K 0.0% 56
RENAISSANCE TECHNOLOGIES LLC Quant Increased +10.41M +854.9% $1.7M 0.0% 54
D. E. Shaw & Co., Inc. Quant Increased +40.57M +10417.7% $6.7M 0.0% 54
Rock Springs Capital Management Growth Healthcare Sold Out -1.61M -100.0% $264.9K 0.0% 53
MILLENNIUM MANAGEMENT LLC Increased +2.22M +1182.0% $364.6K 0.0% 51
Schonfeld Strategic Advisors Long/Short Quant New +132.9K — $21.9K 0.0% 51
Balyasny Asset Management L.P. Reduced -5.82M -98.2% $957.7K 0.0% 51
Caption Management Quant Sold Out -71.3K -100.0% $11.7K 0.0% 50
Y-Intercept Quant New +43.2K — $7.1K 0.0% 48

Most significant buyers

By move score, not size.

  • Wolverine Asset Management New · +12.89M
  • MARSHALL WACE, LLP New · +2.11M
  • RENAISSANCE TECHNOLOGIES LLC Increased · +10.41M
  • D. E. Shaw & Co., Inc. Increased · +40.57M
  • MILLENNIUM MANAGEMENT LLC Increased · +2.22M

Most significant sellers

By move score, not size.

  • Rock Springs Capital Management Sold Out · -1.61M
  • Balyasny Asset Management L.P. Reduced · -5.82M
  • Caption Management Sold Out · -71.3K
  • Squarepoint Ops LLC Reduced · -842.4K
  • ADAR1 Capital Management Reduced · -75.0K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Wolverine Asset Management 2 12.9M 0 +12.89M — 0.1% New 56
MARSHALL WACE, LLP 2 2.1M 0 +2.11M — 0.0% New 56
RENAISSANCE TECHNOLOGIES LLC 1 11.6M 1.2M +10.41M +854.9% 0.0% Increased 54
D. E. Shaw & Co., Inc. 1 41.0M 389.4K +40.57M +10417.7% 0.0% Increased 54
Rock Springs Capital Management 3 0 1.6M -1.61M -100.0% 0.0% Sold Out 53
MILLENNIUM MANAGEMENT LLC 2 2.4M 187.4K +2.22M +1182.0% 0.0% Increased 51
Schonfeld Strategic Advisors 3 132.9K 0 +132.9K — 0.0% New 51
Balyasny Asset Management L.P. 2 104.2K 5.9M -5.82M -98.2% 0.0% Reduced 51
Caption Management 3 0 71.3K -71.3K -100.0% 0.0% Sold Out 50
Y-Intercept 4 43.2K 0 +43.2K — 0.0% New 48
Tudor Investment Corporation 2 479.6K 115.2K +364.3K +316.2% 0.0% Increased 47
TWO SIGMA INVESTMENTS, LP 2 7.4M 4.8M +2.65M +55.5% 0.0% Increased 40
Qube Research & Technologies Ltd 2 7.1M 4.9M +2.15M +43.7% 0.0% Increased 35
AQR Capital Management 3 15.6M 10.1M +5.50M +54.3% 0.0% Increased 33
Squarepoint Ops LLC 2 2.6M 3.4M -842.4K -24.8% 0.0% Reduced 30
ADAR1 Capital Management 3 212.5K 287.5K -75.0K -26.1% 0.0% Reduced 29
Alyeska Investment Group, L.P. 2 2.1M 2.1M 0 +0.0% 0.0% Unchanged 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.

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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.