ATS · ATS Corp · Shareholders & Ownership
$19.04
+0.04 (+0.21%)
At close · Oct 28
Return incl. dividend (before tax)
Q1 2027 earnings call transcript
Market Cap
$1.86B
Shares
98.13M
Volume · Oct 28
88.22K
Avg daily vol (3M)
267.76K
Every disclosed holder of ATS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ATS
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: shares outstanding cannot be set against these holders.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 81,189,256 | — |
| Insiders (Forms 3, 4, 5) | 0 | — |
| 13D/G-only blocks | 1,448,531 | — |
| Registered funds (N-PORT, not summed) | 11,424,892 | — |
% Out is unavailable: a foreign private issuer reports ordinary shares, a different unit from the listed shares.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ATS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
MASON CAPITAL MANAGEMENT LLC
13F
CIK 1218735 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
16,404,170 | ||
| 2 |
ROYAL BANK OF CANADA
13F
CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,881,423 | ||
| 3 |
EdgePoint Investment Group Inc.
13F
CIK 1481669 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7,004,577 | ||
| 4 |
Beutel, Goodman & Co Ltd.
13G
CIK 1361974 · Registered investment adviser · Aug 31, 2026
Rule 13d-1(b), qualified institution, not summed
|
4,796,922 | ||
| 4.1 |
Beutel, Goodman & Co Ltd.
13F
CIK 1361974 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,796,922 | ||
| 5 |
TURTLE CREEK ASSET MANAGEMENT INC.
13F
CIK 1484148 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,084,567 | ||
| 6 |
BANK OF MONTREAL /CAN/
13F
CIK 927971 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,062,973 | ||
| 7 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,905,456 | ||
| 7.1 |
Fidelity Value Fund
Fund
S000005455 · Registered fund · Jul 31, 2026
Fidelity Capital Trust, not summed
|
1,516,100 | ||
| 7.2 |
Fidelity Advisor Value Strategies Fund
Fund
S000005117 · Registered fund · Aug 31, 2026
Fidelity Advisor Series I, not summed
|
375,600 | ||
| 7.3 |
Fidelity Advisor Multi-Asset Income Fund
Fund
S000050482 · Registered fund · Jun 30, 2026
Fidelity School Street Trust, not summed
|
221,151 | ||
| 7.4 |
VIP Value Strategies Portfolio
Fund
S000007735 · Registered fund · Jun 30, 2026
Variable Insurance Products Fund III, not summed
|
146,372 | ||
| 7.5 |
Fidelity Disruptive Automation ETF
Fund
S000079685 · Registered fund · Aug 31, 2026
Fidelity Covington Trust, not summed
|
125,870 | ||
| 8 |
FAIRFAX FINANCIAL HOLDINGS LTD/ CAN
13F
CIK 915191 · Insurance company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,486,400 | ||
| 9 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,398,431 | ||
| 10 |
Jupiter Topco LLC
13F
CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,322,073 | ||
| 10.1 |
Janus Henderson VIT Global Research Portfolio
Fund
S000010402 · Registered fund · Jun 30, 2026
Janus Aspen Series, not summed
|
164,839 | ||
| 11 |
Hill City Capital, LP
13F
CIK 1837343 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,649,857 | ||
| 12 |
TD Waterhouse Canada Inc.
13F
CIK 1999606 · Unknown · Sep 30, 2026
|
1,600,087 | ||
| 13 |
ACK Asset Management LLC
13F
CIK 1510940 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,500,000 | ||
| 14 |
|
1,443,772 | ||
| 15 |
FIL Ltd
13F
CIK 318989 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,326,851 | ||
| 16 |
VANGUARD TOTAL INTERNATIONAL STOCK INDEX FUND
Fund
S000002932 · Registered fund · Jul 31, 2026
VANGUARD STAR FUNDS, not summed
|
1,209,815 | ||
| 17 |
Alberta Investment Management Corp
13F
CIK 1463559 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,177,491 | ||
| 18 |
Scheer, Rowlett & Associates Investment Management Ltd.
13F
CIK 1426327 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,175,268 | ||
| 19 |
ROBO Global Robotics and Automation Index ETF
Fund
S000042659 · Registered fund · Jul 31, 2026
EXCHANGE TRADED CONCEPTS TRUST, not summed
|
1,147,189 | ||
| 20 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,122,152 | ||
| 21 |
Connor, Clark & Lunn Investment Management Ltd.
13F
CIK 1596800 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,089,460 | ||
| 22 |
NORGES BANK
13F
CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,084,181 | ||
| 23 |
Clearbridge Investments, LLC
13F
CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,060,487 | ||
| 24 |
Legal & General Group Plc
13F
CIK 764068 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,056,408 | ||
| 25 |
TD Asset Management Inc
13F
CIK 1056053 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,003,596 | ||
| 26 |
NATIONAL BANK OF CANADA /FI/
13F
CIK 926171 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
855,316 | ||
| 27 |
Janus Henderson Venture Fund
Fund
S000010488 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
838,630 | ||
| 28 |
VANGUARD DEVELOPED MARKETS INDEX FUND
Fund
S000004386 · Registered fund · Jun 30, 2026
VANGUARD TAX-MANAGED FUNDS, not summed
|
807,800 | ||
| 29 |
VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.
13F
CIK 1367401 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
795,619 | ||
| 30 |
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
13F
CIK 1705339 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
788,784 | ||
| 30.1 |
Global X Robotics & Artificial Intelligence ETF
Fund
S000054693 · Registered fund · May 31, 2026
GLOBAL X FUNDS, not summed
|
742,658 | ||
| 31 |
Marathon Asset Management Ltd
13F
CIK 1861026 · Registered investment adviser · Sep 30, 2026
|
732,044 | ||
| 32 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
724,271 | ||
| 33 |
Janus Henderson Global Research Fund
Fund
S000010489 · Registered fund · Jun 30, 2026
Janus Investment Fund, not summed
|
708,510 | ||
| 34 |
Langdon Equity Partners
13F
CIK 2111148 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
600,000 | ||
| 35 |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F
CIK 912938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
540,733 | ||
| 36 |
MACKENZIE FINANCIAL CORP
13F
CIK 919859 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
524,774 | ||
| 37 |
TORONTO DOMINION BANK
13F
CIK 947263 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
406,916 | ||
| 38 |
Public Sector Pension Investment Board
13F
CIK 1396318 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
378,001 | ||
| 39 |
1832 Asset Management L.P.
13F
CIK 944388 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
355,745 | ||
| 40 |
Waratah Capital Advisors Ltd.
13F
CIK 1539919 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
334,923 | ||
| 41 |
CIBC WORLD MARKET INC.
13F
CIK 1421224 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
327,087 | ||
| 42 |
VANGUARD FTSE ALL-WORLD EX-US SMALL-CAP INDEX FUND
Fund
S000025074 · Registered fund · Jul 31, 2026
VANGUARD INTERNATIONAL EQUITY INDEX FUNDS, not summed
|
315,591 | ||
| 43 |
ArrowMark Colorado Holdings LLC
13F
CIK 1483859 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
280,000 | ||
| 43.1 |
Meridian Contrarian Fund
Fund
S000001463 · Registered fund · Jun 30, 2026
Meridian Fund Inc, not summed
|
280,000 | ||
| 44 |
Vanguard Global Advisers, LLC
13F
CIK 1811242 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
274,103 | ||
| 45 |
Roubaix Capital, LLC
13F
CIK 1769700 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
246,909 | ||
| 46 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
243,525 | ||
| 46.1 |
Schwab International Small-Cap Equity ETF
Fund
S000026638 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
176,186 | ||
| 46.2 |
Schwab Fundamental International Small Equity ETF
Fund
S000040880 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
55,907 | ||
| 46.3 |
Schwab Fundamental International Small Equity Index Fund
Fund
S000019901 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
13,322 | ||
| 47 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
234,236 | ||
| 48 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
223,762 | ||
| 49 |
|
222,553 | ||
| 50 |
SCOTIA CAPITAL INC.
13F
CIK 1335644 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
212,719 |
2 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 168 holders
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Key facts
CIK
1394832
CUSIP
00217Y104
13F (30d)
12 filings
12 filers
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