Who Holds ATS Corp /ATS (ATS)? 140 Institutional Holders, Q2 2026
Managers with more than $100 million in US equities report their holdings on Form 13F within 45 days of each quarter end. Quarter ended 30 Jun 2026: 140 holders, $2.2 billion in total.
Largest holders
The 100 largest by value. Change in shares against Q1 2026.
| Manager | Shares | Value | Change | |
|---|---|---|---|---|
| MASON CAPITAL MANAGEMENT LLC | 16,404,170 | $472 million | +0% | 13F |
| ROYAL BANK OF CANADA | 7,881,423 | $227 million | +2% | 13F |
| EdgePoint Investment Group Inc. | 7,004,577 | $202 million | -2% | 13F |
| TURTLE CREEK ASSET MANAGEMENT INC. | 3,084,567 | $89 million | -37% | 13F |
| BANK OF MONTREAL /CAN/ | 3,062,973 | $88 million | -2% | 13F |
| FMR LLC | 2,905,456 | $84 million | +28% | 13F |
| FAIRFAX FINANCIAL HOLDINGS LTD/ CAN | 2,486,400 | $70 million | +0% | 13F |
| VANGUARD CAPITAL MANAGEMENT LLC | 2,398,431 | $69 million | +1% | 13F |
| Jupiter Topco LLC | 2,322,073 | $67 million | New | 13F |
| Hill City Capital, LP | 1,649,857 | $47 million | +0% | 13F |
| TD Waterhouse Canada Inc. | 1,683,683 | $47 million | +3% | 13F |
| ACK Asset Management LLC | 1,500,000 | $43 million | -19% | 13F |
| FIL Ltd | 1,326,851 | $38 million | -25% | 13F |
| Alberta Investment Management Corp | 1,177,491 | $34 million | +25% | 13F |
| Scheer, Rowlett & Associates Investment Management Ltd. | 1,175,268 | $34 million | -1% | 13F |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | 795,619 | $33 million | -8% | 13F |
| BANK OF AMERICA CORP /DE/ | 1,122,152 | $32 million | +19% | 13F |
| Connor, Clark & Lunn Investment Management Ltd. | 1,089,460 | $31 million | -52% | 13F |
| NORGES BANK | 1,084,181 | $31 million | New | 13F |
| Clearbridge Investments, LLC | 1,060,487 | $31 million | -3% | 13F |
| Legal & General Group Plc | 1,056,408 | $30 million | +73% | 13F |
| TD Asset Management Inc | 1,003,596 | $29 million | -29% | 13F |
| Marathon Asset Management Ltd | 954,485 | $28 million | -13% | 13F |
| NATIONAL BANK OF CANADA /FI/ | 855,316 | $24 million | +32% | 13F |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 788,784 | $23 million | +4% | 13F |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 540,733 | $22 million | +1% | 13F |
| MACKENZIE FINANCIAL CORP | 524,774 | $21 million | -15% | 13F |
| VANGUARD FIDUCIARY TRUST CO | 724,271 | $21 million | -1% | 13F |
| Langdon Equity Partners | 600,000 | $17 million | New | 13F |
| TORONTO DOMINION BANK | 406,916 | $12 million | +337% | 13F |
| Public Sector Pension Investment Board | 378,001 | $11 million | +6% | 13F |
| 1832 Asset Management L.P. | 355,745 | $10 million | -11% | 13F |
| Waratah Capital Advisors Ltd. | 334,923 | $10 million | +50% | 13F |
| CIBC WORLD MARKET INC. | 327,087 | $9 million | -6% | 13F |
| ArrowMark Colorado Holdings LLC | 280,000 | $8 million | +61% | 13F |
| Vanguard Global Advisers, LLC | 274,103 | $8 million | +6% | 13F |
| Roubaix Capital, LLC | 246,909 | $7 million | New | 13F |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 243,525 | $7 million | +2% | 13F |
| MORGAN STANLEY | 234,236 | $7 million | +133% | 13F |
| GOLDMAN SACHS GROUP INC | 223,762 | $6 million | +328% | 13F |
| UBS Group AG | 222,553 | $6 million | -2% | 13F |
| Dixon Mitchell Investment Counsel Inc. | 211,025 | $6 million | +0% | 13F |
| SCOTIA CAPITAL INC. | 212,719 | $6 million | +10% | 13F |
| JANE STREET GROUP, LLC | 199,635 | $6 million | +142% | 13F |
| Granite Investment Partners, LLC | 195,894 | $6 million | +13% | 13F |
| Focus Partners Wealth | 181,975 | $5 million | +0% | 13F |
| FIRST TRUST ADVISORS LP | 181,592 | $5 million | +18% | 13F |
| Swiss National Bank | 168,000 | $5 million | +2% | 13F |
| DIMENSIONAL FUND ADVISORS LP | 167,149 | $5 million | +36% | 13F |
| Candelo Capital Management LP | 165,100 | $5 million | +9% | 13F |
| Delaney Capital Management Ltd. | 160,392 | $5 million | +4% | 13F |
| NewGen Asset Management Ltd | 150,000 | $4 million | New | 13F |
| CIBC Asset Management Inc | 138,246 | $4 million | +3% | 13F |
| Front Street Capital Management, Inc. | 124,973 | $4 million | -52% | 13F |
| LOUISBOURG INVESTMENTS INC. | 111,104 | $3 million | +31% | 13F |
| Polar Asset Management Partners Inc. | 105,203 | $3 million | New | 13F |
| BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp | 101,546 | $3 million | +44% | 13F |
| K.J. Harrison & Partners Inc | 100,000 | $3 million | New | 13F |
| MONTRUSCO BOLTON INVESTMENTS INC. | 99,056 | $3 million | -42% | 13F |
| SEI INVESTMENTS CO | 97,376 | $3 million | -42% | 13F |
| PCJ Investment Counsel Ltd. | 85,640 | $2 million | +71% | 13F |
| Canoe Financial LP | 83,024 | $2 million | -5% | 13F |
| HALLSTATT ADVISORS L.P. | 83,020 | $2 million | New | 13F |
| LAZARD ASSET MANAGEMENT LLC | 83,052 | $2 million | +19% | 13F |
| CITADEL ADVISORS LLC | 82,308 | $2 million | +1% | 13F |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 73,654 | $2 million | -1% | 13F |
| GEODE CAPITAL MANAGEMENT, LLC | 69,598 | $2 million | +1% | 13F |
| VANGUARD ASSET MANAGEMENT, Ltd | 66,830 | $2 million | +0% | 13F |
| CenterBook Partners LP | 65,180 | $2 million | New | 13F |
| Nuveen, LLC | 62,584 | $2 million | +0% | 13F |
| Caldwell Investment Management Ltd. | 60,800 | $2 million | +0% | 13F |
| BOOTHBAY FUND MANAGEMENT, LLC | 59,867 | $2 million | New | 13F |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 54,361 | $2 million | +73% | 13F |
| Federation des caisses Desjardins du Quebec | 54,947 | $2 million | -51% | 13F |
| VAN ECK ASSOCIATES CORP | 46,507 | $1 million | +92% | 13F |
| GUARDIAN CAPITAL LP | 46,433 | $1 million | -1% | 13F |
| INTACT INVESTMENT MANAGEMENT INC. | 40,489 | $1 million | -24% | 13F |
| Aviso Financial Inc. | 40,111 | $1 million | -12% | 13F |
| PenderFund Capital Management Ltd. | 37,700 | $1 million | +89% | 13F |
| CITIGROUP INC | 36,651 | $1 million | +37% | 13F |
| BANK OF NOVA SCOTIA TRUST CO | 35,291 | $1 million | +3% | 13F |
| XTX Topco Ltd | 35,013 | $1 million | New | 13F |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 34,791 | $1 million | New | 13F |
| AMERICAN CENTURY COMPANIES INC | 32,500 | $936,788 | New | 13F |
| Engineers Gate Manager LP | 31,363 | $902,627 | +140% | 13F |
| Verition Fund Management LLC | 29,513 | $849,384 | New | 13F |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 28,366 | $817,312 | +4% | 13F |
| FRANKLIN RESOURCES INC | 25,412 | $731,749 | -90% | 13F |
| Squarepoint Ops LLC | 24,760 | $712,593 | New | 13F |
| SIG North Trading, ULC | 22,575 | $649,709 | -14% | 13F |
| ExodusPoint Capital Management, LP | 22,100 | $636,038 | +0% | 13F |
| Vanguard Investments Australia, Ltd. | 21,874 | $630,496 | +13% | 13F |
| WELLS FARGO & COMPANY/MN | 19,748 | $568,319 | +1210% | 13F |
| BARCLAYS PLC | 16,814 | $483,907 | +465% | 13F |
| ALLIANCEBERNSTEIN L.P. | 16,380 | $461,916 | +83% | 13F |
| Pictet Asset Management Holding SA | 15,987 | $460,651 | -3% | 13F |
| Purpose Unlimited Inc. | 15,754 | $454,093 | -45% | 13F |
| Northwest & Ethical Investments L.P. | 15,573 | $448,368 | +42% | 13F |
| Aberdeen Group plc | 13,483 | $388,041 | -49% | 13F |
| TRUE Private Wealth Advisors | 12,080 | $347,662 | +0% | 13F |
Questions and answers
- How many institutions hold ATS Corp /ATS?
- 140 managers reported ATS Corp /ATS on Form 13F for the quarter ended 30 June 2026, against 130 the quarter before.
- Who is the largest institutional holder of ATS Corp /ATS?
- MASON CAPITAL MANAGEMENT LLC, with 16,404,170 shares worth $472 million on its 13F for Q2 2026.
- How many institutions bought or sold out of ATS Corp /ATS in Q2 2026?
- 25 managers reported a new position and 15 reported none after holding it the quarter before.
Source: SEC EDGAR, Form 13F (public domain). Counts and values as filed. Cite this page: Tamarly Intelligence, "Who holds ATS Corp /ATS, Q2 2026", https://app.tamarly.ai/holders/ats-ats, built from SEC EDGAR.
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