ATS CORP (ATS) Institutional Ownership Changes & 13F Activity

ATS CORP (ATS) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Turtle Creek Asset Management, Fairfax Financial Holdings, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Turtle Creek Asset ManagementBuy4,743,76710,385,819$292,880,096
Q4 2025Turtle Creek Asset ManagementSell-1,330,9585,642,052$155,382,112
Q3 2025Turtle Creek Asset ManagementSell-617,5286,973,010$182,692,862
Q2 2025Turtle Creek Asset ManagementSell-710,9907,590,538$241,986,351
Q1 2025Turtle Creek Asset ManagementSell-37,0458,301,528$206,957,093
Q4 2024Fairfax Financial HoldingsBuy2,429,7002,486,400$73,870,688
Q4 2024Turtle Creek Asset ManagementSell-567,6968,338,573$254,159,705
Q3 2024Turtle Creek Asset ManagementBuy3,810,5318,906,269$258,727,114
Q3 2024Fairfax Financial HoldingsBuy16,70056,700$1,626,775
Q2 2024Turtle Creek Asset ManagementBuy1,220,0085,095,738$164,643,295
Q1 2024Turtle Creek Asset ManagementBuy982,7003,875,730$130,689,616
Q1 2024Renaissance Technologies LLCSell-16,20019,100$643
Q4 2023Turtle Creek Asset ManagementBuy484,0502,893,030$124,602,802
Q4 2023Renaissance Technologies LLCSell-54,40035,300$1,526
Q3 2023Turtle Creek Asset ManagementBuy79,8492,408,980$102,670,728
Q3 2023Renaissance Technologies LLCBuy79,40089,700$3,831
Q2 2023Turtle Creek Asset ManagementBuy2,329,1312,329,131$107,349,648
Q2 2023Fairfax Financial HoldingsBuy40,00040,000$1,840,922
Q2 2023Renaissance Technologies LLCBuy10,30010,300$474

Frequently asked questions about ATS activity

  • Which institutional owners are buying ATS?

    Institutional owners buying ATS 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 ATS activity?

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

  • Is institutional interest in ATS increasing?

    Institutional interest in ATS 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.

Related ATS insights