Ats ATS Institutional Ownership

Ownership Summary

ATS Corp /ATS (NYSE:ATS) has 127 institutional investors with active 13F positions as of March 2026.

• They owned 10.9% of outstanding stock in March 2026, up from 9.8% the prior quarter.
• They increased total shares held in Ats by 20.2% from last quarter, and the number of investors in ATS increased 3.25% annually.
• Among the 127 funds, 70 bought more Ats shares, 35 sold down, and 22 held their ground.
• Institutional investors collectively held 92.71Mn shares in Ats as of March 2026, up by 15.58Mn shares quarter on quarter, and down 10.95Mn shares year over year.
• MASON CAPITAL MANAGEMENT LLC holds the largest position in ATS at 16.4Mn shares as of March 31, 2026, or 1.92% of shares outstanding.
• The most significant purchases of ATS for the quarter ending March 2026 came from Turtle Creek Asset Management Inc. (4.74Mn), Janus Henderson Group Plc (3.73Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.37Mn), Vinva Investment Management Ltd (2.09Mn), FIL Ltd (1.72Mn).
• The largest sales of ATS for the quarter ending March 2026 came from Alberta Investment Management Corp (1.74Mn), Invesco Ltd. (929.05K), Goldman Sachs Group Inc (518.5K), 1832 Asset Management L.P. (416.86K), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (383.52K).
• Business Quant data shows the 10 biggest positions in Ats as of March 2026 are held by MASON CAPITAL MANAGEMENT LLC (16.4Mn), Turtle Creek Asset Management Inc. (10.39Mn), Royal Bank Of Canada (7.76Mn), EdgePoint Investment Group Inc. (7.17Mn), Beutel, Goodman & Co Ltd. (5.45Mn), Janus Henderson Group Plc (4.59Mn), Bank Of Montreal /Can/ (3.12Mn), Fairfax Financial Holdings Ltd/ Can (2.49Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.37Mn), FMR LLC (2.28Mn).