ATS ATS CORPORATION: institutional ownership and insider trading
148 funds reported holding $2.58B of ATS CORPORATION in their latest 13F filings; in Q2 2026 funds net sold $94.6M, with 23 new positions and 14 funds selling out.
Famous investors holding ATS
- Ken Griffin (Citadel Advisors): $2.37M, 0.0% of the portfolio
Largest institutional holders of ATS
- MASON CAPITAL MANAGEMENT LLC — $472M
- ROYAL BANK OF CANADA (RY, RBMCF, RYLBF, RYPBF) — $227M
- EdgePoint Investment Group Inc. — $202M
- Beutel, Goodman & Co Ltd. — $138M
- VANGUARD GROUP INC — $93.6M
- Turtle Creek Asset Management Inc. — $88.8M
- BANK OF MONTREAL /CAN/ (BMO, BERZ, BNKD, BNKU, BULZ, CARD, CARU, DULL, FLYD, FLYU, FNGD, FNGO, FNGS, FNGU, GDXD, GDXU, JETD) — $88.2M
- FMR LLC — $83.7M
- FAIRFAX FINANCIAL HOLDINGS LTD/ CAN (FRFFF, FRFHF, FRFXF) — $70.5M
- VANGUARD CAPITAL MANAGEMENT LLC — $69.1M
5%+ owners
- Beutel, Goodman & Co Ltd.: 6.4% (Schedule 13G/A, filed Oct 6, 2026)