Q3 2025 13F Holders as of 9/30/2025
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Type / Class
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Equity / Common Stock
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Shares outstanding
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98M
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Number of holders
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113
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Total 13F shares, excl. options
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82.6M
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Shares change
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-3.29M
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Total reported value, excl. options
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$2.17B
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Value change
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-$101M
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Put/Call ratio
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5.38
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Number of buys
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56
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Number of sells
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-72
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Price
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$26.20
Significant Holders of ATS Corp /ATS - Common Stock (ATS) as of Q3 2025
148 filings reported holding ATS - ATS Corp /ATS - Common Stock as of Q3 2025.
ATS Corp /ATS - Common Stock (ATS) has 113 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 82.6M shares
of 98M outstanding shares and own 84.34% of the company stock.
Largest 10 shareholders include MASON CAPITAL MANAGEMENT LLC (15.6M shares), ROYAL BANK OF CANADA (7.2M shares), TURTLE CREEK ASSET MANAGEMENT INC. (6.97M shares), EdgePoint Investment Group Inc. (6.38M shares), Beutel, Goodman & Co Ltd. (6.33M shares), VANGUARD GROUP INC (3.34M shares), FAIRFAX FINANCIAL HOLDINGS LTD/ CAN (2.49M shares), Connor, Clark & Lunn Investment Management Ltd. (2.05M shares), ACK Asset Management LLC (1.85M shares), and Burgundy Asset Management Ltd. (1.81M shares).
This table shows the top 113 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
| Investor |
Option |
Weight % |
Change % |
Value $ |
* Price $ |
Shares |
Share Change |
Activity |
Report Period |
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.