P.A.M. TRANSPORTATION SVCS (PTSI) Institutional Ownership Changes & 13F Activity

P.A.M. TRANSPORTATION SVCS (PTSI). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Dimensional Fund Advisors Lp, Renaissance Technologies LLC, Castleknight Management Lp, Goldman Sachs Group Inc, and Vanguard Portfolio Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
State Street CorpBuy+223+0.4%61,675$864.07KQ2 2026Sep 22, 2026
California State Teachers Retirement SystemSell-189-73.8%67$939.00Q2 2026Aug 24, 2026
Castleknight Management LpBuy+23,009—23,009$322.36KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+11,662—11,662$163.38KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+2,481+21.3%14,126$197.91KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+2,322+129.7%4,112$57.61KQ2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+1,915+621.8%2,223$31.00KQ2 2026Aug 14, 2026
Barclays PlcSell-110-14.9%628$8.80KQ2 2026Aug 14, 2026
Mirae Asset Global Etfs Holdings Ltd.Buy+22+1.0%2,260$31.66KQ2 2026Aug 14, 2026
Mai Capital ManagementBuy+8+0.0%57,484$805.35KQ2 2026Aug 14, 2026
Quarry LpBuy+2—2$28.00Q2 2026Aug 14, 2026
Renaissance Technologies LLCSell-28,700-3.3%844,041$11.83MQ2 2026Aug 13, 2026
Vanguard Portfolio Management LlcBuy+6,004+21.8%33,607$470.83KQ2 2026Aug 13, 2026
Vanguard Capital Management LlcBuy+2,958+1.3%230,842$3.23MQ2 2026Aug 13, 2026
Northern Trust CorpBuy+2,398+4.6%54,199$759.33KQ2 2026Aug 13, 2026
Morgan StanleySell-1,397-40.0%2,092$29.31KQ2 2026Aug 13, 2026
Ubs Group AgBuy+1,011+63.5%2,602$36.45KQ2 2026Aug 13, 2026
Vanguard Fiduciary Trust CoBuy+439+1.4%32,785$459.32KQ2 2026Aug 13, 2026
Bnp Paribas Financial MarketsSell-300-28.0%770$10.79KQ2 2026Aug 13, 2026
Fmr LlcSell-286-7.7%3,408$47.75KQ2 2026Aug 13, 2026
Jpmorgan Chase & CoBuy+2,122—2,122$31.49KQ2 2026Aug 12, 2026
Pacific Ridge Capital Partners, LlcSell-1,488-0.8%193,151$2.71MQ2 2026Aug 12, 2026
Pinnacle Holdings, LlcSell-349-0.6%55,870$782.74KQ2 2026Aug 12, 2026
Rhumbline AdvisersSell-233-3.4%6,554$91.82KQ2 2026Aug 12, 2026
Geode Capital Management, LlcBuy+57+0.0%137,971$1.93MQ2 2026Aug 12, 2026
Dimensional Fund Advisors LpSell-32,040-2.4%1,305,981$18.30MQ2 2026Aug 11, 2026
Tower Research Capital Llc (Trc)Sell-1,404-52.6%1,266$17.74KQ2 2026Aug 11, 2026
Allworth Financial LpBuy+9+180.0%14$197.00Q2 2026Aug 11, 2026
Arax Advisory PartnersSell-76-18.7%330$4.62KQ2 2026Aug 10, 2026
Essential Partners LlcBuy+15—15$210.00Q2 2026Aug 10, 2026
Showing 30 of 54

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.