ATS Corporation (ATS) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for ATS. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 136 institutions reported holding ATS, with 81.6 million shares worth $2.4 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Mason Capital Management | 16,404,170 | $472M | UNCHANGED |
| Royal Bank of Canada | 7,881,423 | $227M | INCREASED |
| Edgepoint Investment Group | 7,004,577 | $202M | DECREASED |
| Beutel, Goodman & Co Ltd | 4,796,922 | $138M | DECREASED |
| Vanguard | 3,485,509 | $100M | INCREASED |
Full institutional holdings, insider history, and congressional trades for ATS Corporation on SentiSense.