P.A.M. TRANSPORTATION SVCS (PTSI) Stock Institutional Trading Activity


P.A.M. TRANSPORTATION SVCS (PTSI) 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 Donald Smith & Co.. 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 LLCBuy18,428380,528$13,832
Q4 2017Renaissance Technologies LLCBuy27,900362,100$12,467
Q3 2017Renaissance Technologies LLCSell-1,500334,200$7,997
Q2 2017Renaissance Technologies LLCSell-21,700335,700$6,362
Q1 2017Renaissance Technologies LLCSell-6,500357,400$5,822
Q4 2016Renaissance Technologies LLCBuy18,000363,900$9,454
Q3 2016Renaissance Technologies LLCBuy14,100345,900$6,925
Q2 2016Renaissance Technologies LLCSell-12,800331,800$5,272
Q1 2016Renaissance Technologies LLCSell-4,051344,600$10,614
Q4 2015Renaissance Technologies LLCSell-21,105348,651$9,619
Q3 2015Renaissance Technologies LLCBuy24,904369,756$12,220
Q2 2015Renaissance Technologies LLCBuy15,152344,852$20,019
Q1 2015Renaissance Technologies LLCBuy16,200329,700$18,882
Q4 2014Renaissance Technologies LLCBuy26,300313,500$16,252
Q3 2014Renaissance Technologies LLCBuy24,200287,200$10,411
Q2 2014Renaissance Technologies LLCBuy19,501263,000$7,353
Q1 2014Renaissance Technologies LLCBuy9,399243,499$4,841
Q4 2013Renaissance Technologies LLCBuy45,900234,100$4,851
Q4 2013Donald Smith & Co.Sell-5,915385,082$7,979
Q3 2013Renaissance Technologies LLCBuy10,300188,200$3,292
Q3 2013Donald Smith & Co.Buy1,294390,997$6,839
Q2 2013Renaissance Technologies LLCBuy177,900177,900$1,823
Q2 2013Donald Smith & Co.Buy389,703389,703$3,994

Frequently asked questions about PTSI activity

  • Which institutional owners are buying PTSI?

    Institutional owners buying PTSI 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 PTSI activity?

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

  • Is institutional interest in PTSI increasing?

    Institutional interest in PTSI 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.