AtsATS
13F holders, Q1 2025 (March 31)122holders −7
8new positions
16sold out
2famous investors
$24.96avg. 13F price*
At the end of Q1 2025, 122 institutions reported holding Ats Corp. (ATS) in their 13F filings, down 7 from Q4 2024. 8 opened new positions and 16 sold out. The largest holders were Mason Capital Management LLC ($388.0M), Turtle Creek Asset Management Inc. ($207.0M) and Beutel, Goodman & Co Ltd. ($175.8M). 2 famous investors held it, including Prem Watsa (3.3% of Fairfax Financial Holdings's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Ats Corp.
- CUSIP
- 00217Y104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $69.2M |
| Exits | 16 | $36.0M |
All 13F filers, Q4 2024 → Q1 2025: 9,598,442 shares bought and 8,069,348 shares sold, net +1,529,094 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 122 holders
| Mason Capital Management LLC | 90.83% | Add +4.3% | 15,563,568 | $388.0M |
| Turtle Creek Asset Management Inc. | 5.82% | Reduce -0.4% | 8,301,528 | $207.0M |
| Beutel, Goodman & Co Ltd. | 1.01% | Add +8.2% | 7,052,324 | $175.8M |
| Royal Bank of Canada | 0.04% | Add +22.1% | 6,480,168 | $161.6M |
| EdgePoint Investment Group Inc. | 1.01% | Add +41.7% | 5,017,996 | $125.1M |
| Vanguard Group Inc. | 0.00% | Reduce -0.3% | 3,220,572 | $80.3M |
| Fairfax Financial Holdings | 3.29% | No change | 2,486,400 | $60.8M |
| ACK Asset Management LLC | 8.24% | Reduce -3.8% | 2,013,196 | $50.2M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.21% | Add +18.2% | 1,976,154 | $49.3M |
| Burgundy Asset Management Ltd. | 0.46% | Add +21.9% | 1,768,782 | $44.1M |
| TD Waterhouse Canada Inc. | 0.34% | Add +2.3% | 1,673,096 | $41.5M |
| Clearbridge Investments, LLC | 0.03% | Reduce -1.6% | 1,601,599 | $39.9M |
| FMR LLC | 0.00% | Reduce -29.1% | 1,486,643 | $37.1M |
| Invesco Ltd. | 0.01% | Reduce -13.0% | 1,402,085 | $35.0M |
| Hill City Capital, LP | 2.41% | New | 1,299,857 | $32.4M |
| Mackenzie Financial Corp. | 0.04% | Add +6.0% | 1,200,263 | $29.9M |
| Capital World Investors | 0.00% | Reduce -65.3% | 1,196,000 | $29.8M |
| TD Asset Management Inc | 0.03% | Add +32.1% | 1,156,862 | $28.8M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.06% | Reduce -5.2% | 1,111,800 | $27.7M |
| Bank of America Corp. | 0.00% | Add +30.7% | 1,055,964 | $26.3M |
| Bank of Montreal | 0.01% | Add +8.6% | 1,045,567 | $26.1M |
| Norges Bank | 0.00% | No change | 1,027,456 | $25.6M |
| Alberta Investment Management Corp | 0.17% | Reduce -11.1% | 966,127 | $24.1M |
| Janus Henderson Group PLC | 0.01% | Reduce -0.1% | 922,164 | $24.0M |
| 1832 Asset Management L.P. | 0.04% | Add +27.5% | 845,052 | $21.1M |
| FIL Ltd | 0.02% | Reduce -56.2% | 816,427 | $20.4M |
| Galibier Capital Management Ltd. | 6.28% | Add +12.5% | 806,997 | $20.1M |
| Fiera Capital Corp | 0.07% | Add +0.3% | 723,111 | $18.0M |
| Moore Capital Management, LP | 0.71% | New | 722,482 | $18.0M |
| Principal Financial Group Inc. | 0.01% | Add +4.3% | 696,840 | $17.4M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.04% | Add +46.3% | 641,202 | $16.0M |
| Scheer, Rowlett & Associates Investment Management Ltd. | 1.17% | Add +324.5% | 632,491 | $15.8M |
| Canoe Financial LP | 0.25% | Reduce -4.5% | 613,299 | $15.3M |
| Agf Management Ltd. | 0.07% | No change | 541,730 | $13.5M |
| Nicola Wealth Management LTD. | 1.27% | Add +22.5% | 523,300 | $13.0M |
| Massachusetts Financial Services Co. | 0.00% | Reduce -4.8% | 513,106 | $12.8M |
| Federation des caisses Desjardins du Quebec | 0.06% | Reduce -12.1% | 483,488 | $11.8M |
| Legal & General Group Plc | 0.00% | Add +9.3% | 461,204 | $11.5M |
| Rockefeller Capital Management L.P. | 0.03% | Add +11.1% | 449,550 | $11.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +79.2% | 434,044 | $10.8M |
| National Bank of Canada | 0.01% | Reduce -14.4% | 422,344 | $10.3M |
| Foresight Group Ltd Liability Partnership | 1.36% | New | 386,294 | $9.6M |
| Dixon Mitchell Investment Counsel Inc. | 0.40% | Add +5.8% | 356,125 | $8.9M |
| Cibc World Market Inc. | 0.02% | Add +3.0% | 346,179 | $8.6M |
| UBS Group AG | 0.00% | Reduce -3.3% | 336,740 | $8.4M |
| Heathbridge Capital Management Ltd. | 3.28% | Reduce -1.7% | 323,300 | $8.1M |
| Morgan Stanley | 0.00% | Reduce -3.3% | 301,687 | $7.5M |
| Front Street Capital Management, Inc. | 1.37% | Add +2.9% | 288,962 | $7.2M |
| Allspring Global Investments Holdings, LLC | 0.01% | Reduce -11.6% | 251,058 | $6.3M |
| Select Equity Group, L.P. | 0.03% | New | 242,640 | $6.0M |
| Lombard Odier Asset Management (Europe) Ltd | 0.54% | Add +73.6% | 114,315 | $5.9M |
| Van Berkom & Associates Inc. | 0.19% | Reduce -1.6% | 231,789 | $5.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.1% | 200,610 | $5.0M |
| Scotia Capital Inc. | 0.03% | Add +2.3% | 196,261 | $4.8M |
| Swiss National Bank | 0.00% | Reduce -1.3% | 162,300 | $4.0M |
| Granite Investment Partners, LLC | 0.20% | Add +9.9% | 157,681 | $3.9M |
| JARISLOWSKY, FRASER Ltd | 0.02% | Add +2.2% | 137,520 | $3.4M |
| Envestnet Asset Management Inc. | 0.00% | Add +14.9% | 126,293 | $3.1M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -80.7% | 123,055 | $3.1M |
| Boothbay Fund Management, LLC | 0.11% | Reduce -5.9% | 122,765 | $3.1M |
| Royce & Associates LP | 0.03% | Add +59.6% | 120,500 | $3.0M |
| First Trust Advisors LP | 0.00% | Add +12.8% | 116,706 | $2.9M |
| Waratah Capital Advisors Ltd. | 0.18% | New | 107,175 | $2.7M |
| CIBC Asset Management Inc | 0.01% | Reduce -68.0% | 103,378 | $2.6M |
| Natixis Advisors, LLC | 0.00% | Reduce -8.8% | 86,147 | $2.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -2.0% | 81,886 | $2.0M |
| Russell Investments Group, Ltd. | 0.00% | Add +22.6% | 80,236 | $2.0M |
| Nuveen, LLC | 0.00% | — | 66,106 | $1.6M |
| Caldwell Investment Management Ltd. | 1.16% | Add +26.4% | 60,800 | $1.6M |
| Toronto Dominion Bank | 0.00% | Add +8.6% | 60,576 | $1.5M |
| Aviso Financial Inc. | 0.06% | Add +9.9% | 50,201 | $1.3M |
| BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp | 0.01% | Reduce -90.0% | 46,871 | $1.2M |
| Geode Capital Management, LLC | 0.00% | Add +5.3% | 43,250 | $1.1M |
| Dimensional Fund Advisors LP | 0.00% | Add +16.3% | 43,573 | $1.1M |
| Onex Canada Asset Management Inc. | 0.14% | Reduce -25.7% | 43,299 | $1.1M |
| Jane Street Group, LLC | 0.00% | Add +29.7% | 42,085 | $1.0M |
| Ewing Morris & Co. Investment Partners Ltd. | 0.32% | No change | 28,280 | $1.0M |
| Amundi | 0.00% | Add +5.4% | 30,538 | $770K |
| D. E. Shaw & Co. | 0.00% | Reduce -4.3% | 30,900 | $770K |
| Public Employees Retirement System of Ohio | 0.00% | Add +12.9% | 29,771 | $742K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 23,128 | $576K |
| Barclays PLC | 0.00% | Add +24.0% | 21,800 | $543K |
| Bank of Nova Scotia Trust Co. | 0.05% | Add +15.5% | 17,713 | $442K |
| Caption Management, LLC | 0.02% | New | 17,607 | $439K |
| Mariner, LLC | 0.00% | Add +86.5% | 17,400 | $434K |
| Franklin Resources Inc. | 0.00% | Reduce -12.1% | 15,935 | $397K |
| Nebula Research & Development LLC | 0.03% | Add +32.7% | 14,704 | $367K |
| Pictet Asset Management Holding SA | 0.00% | Reduce -5.2% | 14,099 | $351K |
| Alliancebernstein L.P. | 0.00% | Reduce -98.7% | 14,000 | $349K |
| Wells Fargo & Company | 0.00% | Add +11.4% | 13,677 | $341K |
| Aberdeen Group plc | 0.00% | Add +0.5% | 13,336 | $332K |
| Dynasty Wealth Management, LLC | 0.01% | Add +1.5% | 12,934 | $322K |
| Tower Research Capital LLC (TRC) | 0.01% | Add +485.7% | 12,715 | $317K |
| Cresset Asset Management, LLC | 0.00% | Reduce -20.6% | 12,464 | $311K |
| TRUE Private Wealth Advisors | 0.04% | No change | 12,080 | $301K |
| Bank of New York Mellon Corp | 0.00% | Add +0.1% | 11,241 | $280K |
| Procyon Advisors, LLC | 0.02% | Add +15.1% | 11,084 | $276K |
| Engineers Gate Manager LP | 0.00% | Add +16.3% | 10,459 | $261K |
| Hantz Financial Services, Inc. | 0.00% | Add +0.7% | 8,821 | $220K |
| Citigroup Inc. | 0.00% | Reduce -4.6% | 8,459 | $211K |
"% of holder's portfolio" is ATS's weight in each manager's 13F, not the share of Ats Corp. the manager owns.