Stock Ownership/ATOS

ATOSSA THERAPEUTICS INC (ATOS): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ATOS · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
3
13F filers
Aggregate Value
$345K
Across holders
Last Price
$2.64
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity1 increased2 reduced0 exited
Institutional Holders of ATOS
↗
3 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund132K$255K73.8%0.0%Added+$44KQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund47K$90K26.0%0.0%Reduced$-39KQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund333$6430.2%0.0%Reduced$-39Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$255K· 73.8% of total· 0.0% port· 132K sh· +$44K QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$90K· 26.0% of total· 0.0% port· 47K sh· $-39K QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$643· 0.2% of total· 0.0% port· 333 sh· $-39 QoQ· Q2 2026
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