ALPHA PRO TECH LTD (APT) Stock Institutional Trading Activity


ALPHA PRO TECH LTD (APT) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2018Renaissance Technologies LLCSell-16,5001,250,910$4,191
Q4 2017Renaissance Technologies LLCBuy4,4001,267,410$5,070
Q3 2017Renaissance Technologies LLCSell-40,3951,263,010$4,863
Q2 2017Renaissance Technologies LLCSell-105,6861,303,405$3,845
Q1 2017Renaissance Technologies LLCSell-96,3191,409,091$3,875
Q4 2016Renaissance Technologies LLCSell-22,5121,505,410$5,269
Q3 2016Renaissance Technologies LLCBuy90,1751,527,922$5,501
Q2 2016Renaissance Technologies LLCBuy3,4491,437,747$3,264
Q1 2016Renaissance Technologies LLCSell-18,7001,434,298$2,610
Q4 2015Renaissance Technologies LLCSell-4,2001,452,998$2,543
Q3 2015Renaissance Technologies LLCSell-3,2001,457,198$2,900
Q2 2015Renaissance Technologies LLCSell-8,1921,460,398$3,271
Q1 2015Renaissance Technologies LLCBuy1,3001,468,590$3,334
Q4 2014Renaissance Technologies LLCBuy1,158,1901,467,290$3,771
Q3 2014Renaissance Technologies LLCBuy16,200309,100$1,005
Q2 2014Renaissance Technologies LLCBuy35,200292,900$624
Q1 2014Renaissance Technologies LLCBuy30,600257,700$577
Q4 2013Renaissance Technologies LLCBuy19,500227,100$488
Q3 2013Renaissance Technologies LLCBuy1,000207,600$313
Q2 2013Renaissance Technologies LLCBuy206,600206,600$331

Frequently asked questions about APT activity

  • Which institutional owners are buying APT?

    Institutional owners buying APT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in APT activity?

    "Buy" means an investor increased their reported position in APT compared to the prior reporting period. This reflects growing exposure to ALPHA PRO TECH LTD (APT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in APT increasing?

    Institutional interest in APT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.