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The company

Gossamer Bio, Inc.

GOSS · Nasdaq

Health CareBiotechnologyNot moving yet

GOSS stood above a rising 150-day average in 14 of the last 52 weekly readings, and has been out of that trend for the last 38 weeks. It is 52.8% below that average now. Biotechnology: 16% of its 561 stocks in an uptrend (−15 points in four weeks); Health Care: 26% (−10 points in four weeks).

SEC filings

Statistics

Rotation: Not moving yet
Weeks in an uptrend: out for 38
Industry in uptrend: 16% -15 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $0
Officials’ trades on record: 0
Institutions holding: 163 (-12)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 14 of 52 weeks.

20 Apr – 19 Oct

Biotechnology: Few of its stocks are in an uptrend and the share has fallen sharply over four weeks. Health Care: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months0

Sale orders, 12 months0

Buyers · sellers0 · 0

No open-market buy or sale by its insiders on record.

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders163-12 on the quarter

New · exited29 · 42

Reported value$58.1M

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
D. E. Shaw & Co., Inc.added · filed 14 Aug 2026	40,959,285$6.7M	+40,569,854+10417.7%
683 Capital Management, LLCadded · filed 14 Aug 2026	39,198,868$6.5M	+34,198,868+684.0%
DeepCurrents Investment Group LLCnew · filed 14 Aug 2026	37,665,073$6.0M	+37,665,073
Context Capital Management, LLCnew · filed 23 Jul 2026	28,946,459$4.8M	+28,946,459
Worth Venture Partners, LLCnew · filed 10 Aug 2026	25,017,881$4.1M	+25,017,881
AQR CAPITAL MANAGEMENT LLCadded · filed 14 Aug 2026	15,629,993$2.6M	+5,503,096+54.3%
WOLVERINE ASSET MANAGEMENT LLCnew · filed 10 Aug 2026	12,894,746$2.1M	+12,894,746
RENAISSANCE TECHNOLOGIES LLCadded · filed 13 Aug 2026	11,629,896$1.9M	+10,412,028+854.9%
Kalehua Capital Management LLCadded · filed 14 Aug 2026	11,149,363$1.8M	+3,677,523+49.2%
VANGUARD CAPITAL MANAGEMENT LLCadded · filed 13 Aug 2026	9,416,023$1.6M	+21,430+0.2%