Who owns ATS
127 institutions reported holding ATS for 2026Q1, together 87% of the company, more than the 119 a quarter earlier.
127
Institutions reporting a position · as of 2026Q1 · up from 119 the quarter before
- Shares held by institutions
- 84.8M
Shares held by institutions · 87% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $2.38B
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 43%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 14
- New positions
- 18
- Positions exited
- 14
- Added to
- 44
- Reduced
- 35
- Top 10 holdersof the company
- 57%
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 127 | 84.8M | $2.38B |
| 2025Q4 | 119 | 82.8M | $2.29B |
| 2025Q3 | 113 | 83.4M | $2.19B |
| 2025Q2 | 129 | 86.7M | $2.76B |
| 2025Q1 | 119 | 87.1M | $2.17B |
| 2024Q4 | 127 | 85.6M | $2.61B |
| 2024Q3 | 127 | 80.8M | $2.35B |
| 2024Q2 | 129 | 81.3M | $2.63B |
| 2024Q1 | 133 | 75.9M | $2.76B |
| 2023Q4 | 130 | 75.3M | $3.26B |
| 2023Q3 | 125 | 74.8M | $3.21B |
| 2023Q2 | 127 | 76.1M | $3.53B |
| 2023Q1 | 2 | 1.9M | $81M |
| 2022Q4 | 1 | 1.1M | $33M |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| MASON CAPITAL MANAGEMENT LLC | 16.4M | 17% | $463M |
| ROYAL BANK OF CANADA | 7.8M | 8.0% | $219M |
| EdgePoint Investment Group Inc. | 7.2M | 7.4% | $202M |
| Beutel, Goodman & Co Ltd. | 5.5M | 5.6% | $153M |
| TURTLE CREEK ASSET MANAGEMENT INC. | 4.9M | 5.0% | $138M |
| VANGUARD GROUP INC | 3.4M | 3.5% | $97M |
| BANK OF MONTREAL /CAN/ | 3.1M | 3.2% | $88M |
| FAIRFAX FINANCIAL HOLDINGS LTD/ CAN | 2.5M | 2.6% | $69M |
| HENDERSON GROUP PLC | 2.3M | 2.4% | $65M |
| FMR LLC | 2.3M | 2.3% | $64M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
reading the register…
Specialty Industrial Machinery
Ranks #27 of 44 by Smart Score