AMPCO-PITTSBURGH CORP (AP) Stock Institutional Trading Activity


AMPCO-PITTSBURGH CORP (AP) 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 and Fairfax Financial Holdings. 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
Q4 2018Renaissance Technologies LLCBuy70,843380,724$1,180
Q3 2018Fairfax Financial HoldingsBuy35,000200,000$1,170
Q3 2018Renaissance Technologies LLCBuy35,081309,881$1,828
Q1 2018Fairfax Financial HoldingsBuy30,000165,000$1,469
Q1 2018Renaissance Technologies LLCBuy3,600274,800$2,446
Q4 2017Renaissance Technologies LLCBuy6,700271,200$3,363
Q3 2017Fairfax Financial HoldingsBuy135,000135,000$2,349
Q3 2017Renaissance Technologies LLCBuy14,000264,500$4,602
Q2 2017Renaissance Technologies LLCSell-800250,500$3,695
Q1 2017Renaissance Technologies LLCSell-8,500251,300$3,531
Q4 2016Renaissance Technologies LLCSell-36,609259,800$4,352
Q3 2016Renaissance Technologies LLCSell-76,291296,409$3,287
Q2 2016Renaissance Technologies LLCBuy141,300372,700$4,215
Q1 2016Renaissance Technologies LLCBuy26,300231,400$3,219
Q4 2015Renaissance Technologies LLCBuy38,400205,100$2,104
Q3 2015Renaissance Technologies LLCBuy16,696166,700$1,819
Q2 2015Renaissance Technologies LLCBuy63,104150,004$2,268
Q1 2015Renaissance Technologies LLCBuy26,50086,900$1,517
Q4 2014Renaissance Technologies LLCBuy6,60060,400$1,163
Q3 2014Renaissance Technologies LLCBuy5,30053,800$1,076
Q2 2014Renaissance Technologies LLCBuy1,70048,500$1,113
Q1 2014Renaissance Technologies LLCSell-26,10046,800$883
Q4 2013Renaissance Technologies LLCBuy16,10072,900$1,418
Q3 2013Renaissance Technologies LLCBuy12,90056,800$1,018
Q2 2013Renaissance Technologies LLCBuy43,90043,900$824

Frequently asked questions about AP activity

  • Which institutional owners are buying AP?

    Institutional owners buying AP 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 AP activity?

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

  • Is institutional interest in AP increasing?

    Institutional interest in AP 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.