ATS CORPORATION COM is a security (CUSIP 00217Y104) tracked across SEC portfolio filings. 129 institutional managers reported $2.3B on Form 13F as of 2026-06-30; 7 registered fund positions totaling $46.3M via N-PORT as of 2026-05-31.
Showing 15 of 129 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| MASON CAPITAL MANAGEMENT LLC | New York, NY | $462.6M | 16,404,170 |
| Royal Bank of Canada | TORONTO, A6 | $218.9M | 7,761,838 |
| EdgePoint Investment Group Inc. | TORONTO, A6 | $202.1M | 7,168,112 |
| TURTLE CREEK ASSET MANAGEMENT INC. | TORONTO, A6 | $138.1M | 4,896,669 |
| VANGUARD GROUP INC | Valley Forge, PA | $93.6M | 3,397,166 |
| BANK OF MONTREAL /CAN/ | TORONTO, A6 | $87.8M | 3,115,360 |
| FAIRFAX FINANCIAL HOLDINGS LTD/ CAN | Toronto, A6 | $69.4M | 2,486,400 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $64.5M | 2,297,214 |
| FMR LLC | BOSTON, MA | $64.2M | 2,277,472 |
| Connor, Clark & Lunn Investment Management Ltd. | VANCOUVER, A1 | $63.8M | 2,264,757 |
| ACK Asset Management LLC | GREENWICH, CT | $52.1M | 1,846,196 |
| FIL Ltd | HAMILTON, D0 | $50.1M | 1,778,181 |
| Burgundy Asset Management Ltd. | Toronto, A6 | $50.0M | 1,807,557 |
| TD Waterhouse Canada Inc. | TORONTO, A6 | $47.4M | 1,683,683 |
| Hill City Capital, LP | BOSTON, MA | $46.5M | 1,649,857 |
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| Janus Henderson Venture Fund | JANUS INVESTMENT FUND | $22.8M | 74.47% |
| Meridian Contrarian Fund | Meridian Fund Inc | $9.8M | 166.75% |
| abrdn U.S. Small Cap Equity Fund | abrdn Funds | $7.6M | 202.77% |
| Embark Small Cap Equity Fund | Harbor Funds II | $3.4M | 59.66% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $1.8M | 8.02% |
| Tarkio Fund | Clark Fork Trust | $907K | 35.00% |
| Blackstone Alternative Multi-Strategy Fund | Blackstone Alternative Investment Funds | $-79K | -0.22% |