Stock Ownership/APT

ALPHA PRO TECH LTD (APT): Ownership & Insider Activity

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

Reported Holders
3
13F filers
Aggregate Value
$3.8M
Across holders
Last Price
$5.22
2026-08-24
Sector
Industrials
GICS
Quarterly fund activity2 increased0 reduced0 exited
Institutional Holders of APT
↗
3 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund562K$3.2M83.6%0.0%Added+$98KQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund58K$328K8.7%0.0%Unchanged+$0Q2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund52K$293K7.8%0.0%Added—Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$3.2M· 83.6% of total· 0.0% port· 562K sh· +$98K QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPUnchanged
Hedge Fund
$328K· 8.7% of total· 0.0% port· 58K sh· +$0 QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$293K· 7.8% of total· 0.0% port· 52K sh· — QoQ· Q2 2026
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