ATS Ownership | Who Owns ATS?
ATS Ownership Summary
ATS is owned by 26.30% institutional investors, 0.78% insiders, and 72.93% retail investors. Mason capital management is the largest institutional shareholder, holding 16.73% of ATS shares. EdgePoint Canadian Portfolio Series F is the top mutual fund, with 4.29% of its assets in ATS shares.
ATS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | ATS | 26.30% | 0.78% | 72.93% |
| Sector | Industrials Stocks | 49.61% | 15.69% | 34.70% |
| Industry | Industrial Machinery Stocks | 46.01% | 10.90% | 43.09% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Mason capital management | 16.40M | 16.73% | $462.60M |
| Turtle creek asset management | 10.39M | 10.59% | $292.88M |
| Royal bank of canada | 7.76M | 7.92% | $218.88M |
| Edgepoint investment group | 7.17M | 7.31% | $202.08M |
| Beutel, goodman | 5.45M | 5.56% | $153.26M |
| Vanguard group | 3.40M | 3.46% | $93.58M |
| Bank of montreal /can/ | 3.12M | 3.18% | $87.83M |
| Fairfax financial ltd/ can | 2.49M | 2.54% | $69.35M |
| Janus henderson group | 2.30M | 2.34% | $64.54M |
| Fmr | 2.28M | 2.32% | $64.19M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Mason capital management | 16.40M | 75.48% | $462.60M |
| Turtle creek asset management | 10.39M | 7.46% | $292.88M |
| Ack asset management | 1.85M | 6.50% | $52.06M |
| Galibier capital management | 447.45K | 3.90% | $11.71M |
| Fairfax financial ltd/ can | 2.49M | 3.57% | $69.35M |
| Candelo capital management lp | 151.69K | 3.53% | $4.27M |
| Scheer, rowlett & associates investment management | 1.18M | 2.40% | $33.32M |
| Hill city capital, lp | 1.65M | 1.66% | $46.53M |
| Edgepoint investment group | 7.17M | 1.62% | $202.08M |
| Foresight group ltd liability partnership | 388.89K | 1.52% | $10.19M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Turtle creek asset management | 10.39M | 7.46% | 4.74M |
| Vinva investment management | 2.09M | 0.45% | 2.09M |
| Fil | 1.78M | 0.04% | 1.72M |
| Janus henderson group | 2.30M | 0.03% | 1.44M |
| Norges bank | 1.08M | 0.00% | 1.08M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Capital world investors | - | - | -1.20M |
| Invesco | 343.18K | 0.00% | -929.05K |
| Healthcare of ontario pension plan trust fund | - | - | -753.49K |
| Moore capital management, lp | - | - | -611.12K |
| Nicola wealth management | - | - | -523.30K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vinva investment management | 2.09M | 0.45% | 2.09M | $36.51M |
| Norges bank | 1.08M | 0.00% | 1.08M | $29.73M |
| Vanguard fiduciary trust | 728.06K | 0.01% | 728.06K | $20.52M |
| Vanguard global advisers | 259.00K | 0.00% | 259.00K | $7.30M |
| Waratah capital advisors | 223.98K | 0.24% | 223.98K | $6.32M |
Sold Out
| Holder | Change |
|---|---|
| Bogart wealth | -1.00 |
| Us bancorp \de\ | -38.00 |
| Northwestern mutual wealth management | -46.00 |
| Salem investment counselors | -47.00 |
| Geneos wealth management | -57.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 76 | -38.21% | 25,786,338 | -68.94% | 26 | 0.37% | 41 | -34.92% | 23 | -47.73% |
| Dec 31, 2025 | 89 | -27.05% | 48,665,808 | -41.74% | 49 | 0.68% | 45 | -15.09% | 34 | -32.00% |
| Sep 30, 2025 | 118 | -13.24% | 82,593,526 | -4.00% | 84 | 1.10% | 52 | -25.71% | 49 | -3.92% |
| Jun 30, 2025 | 135 | 3.05% | 86,037,594 | -0.34% | 87 | 1.13% | 70 | -2.78% | 51 | 18.60% |
| Mar 31, 2025 | 131 | -4.38% | 86,328,006 | 0.59% | 88 | 1.17% | 72 | 4.35% | 43 | -12.24% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| EdgePoint Canadian Portfolio Series F | 4.16M | 4.29% | 195.31K |
| EdgePoint Cdn Growth & Income Port Sr F | 1.84M | 1.90% | 45.85K |
| Beutel Goodman Canadian Equity Class D | 1.61M | 1.66% | -7.69K |
| Fidelity Canadian Opportunities Sr B | 1.43M | 1.48% | 542.43K |
| RBC North American Value Fund A | 1.39M | 1.43% | - |
| Fidelity Value | 1.21M | 1.24% | 124.90K |
| Vanguard Total Intl Stock Index Inv | 1.20M | 1.24% | - |
| RBC Private Canadian Equity Pool I | 1.19M | 1.23% | -53.42K |
| PH&N Small Float Fund O | 1.16M | 1.19% | - |
| Invesco Income Growth SC | 931.20K | 0.96% | -93.00K |
ATS Ownership FAQ
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