ATS Corp
ATS- Exchange
- NYSE
- Industry
- General Industrial Machinery & Equipment, NEC
- SEC CIK
- 0001394832
No open-market purchases or sales by ATS Corp insiders were filed in the last 90 days; 141 institutions reported holding it in 13F filings for Q2 2026, worth $2.37B in total; Fairfax Financial is the only superinvestor holding it.
13F holders, Q4 2025
Institutional positions in ATS Corp as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 122
- +11 vs. Q3 2025
- Shares held
- 83.2M
- +2.23M (+2.8%) vs. Q3 2025
- Total value
- $2.30B
- +$173.0M (+8.1%) vs. Q3 2025
- New holders
- 24
- 41 more added
- Sold out
- 13
- 42 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 141 | $2.37B |
| Q1 2026 | 131 | $2.39B |
| Q4 2025 | 122 | $2.30B |
| Q3 2025 | 115 | $2.20B |
| Q2 2025 | 131 | $2.77B |
| Q1 2025 | 122 | $2.18B |
| Q4 2024 | 129 | $2.62B |
| Q3 2024 | 130 | $2.36B |
| Q2 2024 | 132 | $2.64B |
| Q1 2024 | 136 | $2.77B |
| Q4 2023 | 132 | $3.27B |
| Q3 2023 | 127 | $3.21B |
| Q2 2023 | 131 | $3.53B |
| Q1 2023 | 3 | $80.6M |
| Q4 2022 | 2 | $33.4M |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding ATS Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Norges Bank | 1,079,090 | $29.7M | 0.00% | +1,079,090 | New |
| Marathon Asset Mgmt Ltd | 1,097,711 | $30.3M | 1.16% | −68,296−5.9% | Reduced |
| Bank of America Corp | 1,100,381 | $30.3M | 0.00% | −151,314−12.1% | Reduced |
| Clearbridge Investments, LLC | 1,111,485 | $30.6M | 0.02% | −18,896−1.7% | Reduced |
| Kempen Capital Management N.V. | 815,031 | $30.8M | 0.26% | −647−0.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 1,141,835 | $31.5M | 0.05% | +32,605+2.9% | Added |
| TD Asset Management Inc | 1,193,208 | $32.9M | 0.03% | +11,446+1.0% | Added |
| Scheer, Rowlett & Associates Investment Management Ltd. | 1,226,450 | $33.8M | 2.32% | +9,266+0.8% | Added |
| Invesco Ltd. | 1,272,222 | $35.0M | 0.00% | +75,490+6.3% | Added |
| Alberta Investment Management Corp | 1,340,265 | $36.9M | 0.22% | 00.0% | Unchanged |
| Hill City Capital, LP | 1,649,857 | $45.4M | 1.72% | 00.0% | Unchanged |
| ACK Asset Management LLC | 1,846,196 | $50.8M | 6.38% | 00.0% | Unchanged |
| FMR LLC | 2,117,766 | $58.3M | 0.00% | +742,179+54.0% | Added |
| Fairfax Financial Holdings LtdSuperinvestorFairfax Financial | 2,486,400 | $68.3M | 3.28% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 2,485,638 | $68.5M | 0.18% | +432,166+21.0% | Added |
| Bank of Montreal | 3,022,693 | $83.3M | 0.03% | +1,880,040+164.5% | Added |
| Vanguard Group Inc | 3,397,166 | $93.6M | 0.00% | +55,731+1.7% | Added |
| Turtle Creek Asset Management Inc. | 5,642,052 | $155.4M | 6.84% | −1,330,958−19.1% | Reduced |
| Beutel, Goodman & Co Ltd. | 5,837,138 | $161.0M | 0.99% | −493,550−7.8% | Reduced |
| EdgePoint Investment Group Inc. | 6,888,785 | $189.8M | 1.56% | +507,491+8.0% | Added |
| Royal Bank of Canada | 7,644,547 | $210.5M | 0.04% | +442,769+6.1% | Added |
| Mason Capital Management LLC | 15,563,568 | $428.6M | 76.32% | 00.0% | Unchanged |
| Foresight Group Ltd Liability Partnership | 0 | $0 | 0.00% | −388,892−100.0% | Sold out |
| Roubaix Capital, LLC | 0 | $0 | 0.00% | −223,532−100.0% | Sold out |
| Bastion Asset Management Inc. | 0 | $0 | 0.00% | −72,655−100.0% | Sold out |
| Blackstone Group Inc. | 0 | $0 | 0.00% | −49,501−100.0% | Sold out |
| Lombard Odier Asset Management (Switzerland) SA | 0 | $0 | 0.00% | −21,515−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −27,180−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −10,170−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −4,665−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −4,262−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −1,238−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −143−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −67−100.0% | Sold out |
| Burgundy Asset Management Ltd. | – | – | – | – | Not filed |
| Galibier Capital Management Ltd. | – | – | – | – | Not filed |
| Jarislowsky, Fraser Ltd | – | – | – | – | Not filed |
| Shell Asset Management Co | – | – | – | – | Not filed |