ATS CORPORATION

Ticker: ATS CUSIP: 00217Y104 Class: Foreign Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
MASON CAPITAL MANAGEMENT LLC15,563,568$428,621
ROYAL BANK OF CANADA7,644,547$210,529
EdgePoint Investment Group Inc.6,888,785$189,771
Beutel, Goodman & Co Ltd.5,837,138$161
TURTLE CREEK ASSET MANAGEMENT INC.5,642,052$155,382
VANGUARD GROUP INC3,397,166$93,582
BANK OF MONTREAL /CAN/3,022,693$83,269
FAIRFAX FINANCIAL HOLDINGS LTD/ CAN2,486,400$68,282
Connor, Clark & Lunn Investment Management Ltd.2,485,638$68,474
FMR LLC2,117,766$58,339
ACK Asset Management LLC1,846,196$50,844
Hill City Capital, LP1,649,857$45,437
Alberta Investment Management Corp1,340,265$36,918
Invesco Ltd.1,272,222$35,037
Scheer, Rowlett & Associates Investment Management Ltd.1,226,450$33,786
TD Asset Management Inc1,193,208$32,913
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.1,141,835$31,496
Clearbridge Investments, LLC1,111,485$30,610
BANK OF AMERICA CORP /DE/1,100,381$30,304
Marathon Asset Management Ltd1,097,711$30,278
NORGES BANK1,079,090$29,727
TD Waterhouse Canada Inc.966,349$26,496
PRINCIPAL FINANCIAL GROUP INC878,240$24,225
JANUS HENDERSON GROUP PLC861,839$23,772
1832 Asset Management L.P.818,559$22,543
VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.815,031$30,816
MACKENZIE FINANCIAL CORP758,980$21,054
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND753,492$20,759
MASSACHUSETTS FINANCIAL SERVICES CO /MA/558,675$15,386
Legal & General Group Plc542,023$14,930
NATIONAL BANK OF CANADA /FI/418,332$11,469
AGF MANAGEMENT LTD400,140$11,023
CIBC WORLD MARKET INC.354,069$9,755
Public Sector Pension Investment Board287,829$7,929
Front Street Capital Management, Inc.286,994$8
GOLDMAN SACHS GROUP INC285,377$7,859
Van Berkom & Associates Inc.269,136$7
MONTRUSCO BOLTON INVESTMENTS INC.254,681$7,025
CHARLES SCHWAB INVESTMENT MANAGEMENT INC236,332$6,519
UBS Group AG228,774$6,300
Dixon Mitchell Investment Counsel Inc.211,025$5,821
LOUISBOURG INVESTMENTS INC.207,130$5,714
Granite Investment Partners, LLC203,876$5,615
SCOTIA CAPITAL INC.195,019$5,346
FIRST TRUST ADVISORS LP184,128$5,072
Focus Partners Wealth181,975$5,012
Polar Asset Management Partners Inc.180,000$4,960
ROYCE & ASSOCIATES LP164,500$4,532
Swiss National Bank164,400$4,538
CITADEL ADVISORS LLC148,840$4,099
CIBC Asset Management Inc131,500$3,625
Federation des caisses Desjardins du Quebec116,404$3,198
DIMENSIONAL FUND ADVISORS LP110,342$3,039
D. E. Shaw & Co., Inc.108,100$2,978
SEI INVESTMENTS CO98,742$2,719
TORONTO DOMINION BANK81,910$2,257
Canoe Financial LP80,600$2,220
MANUFACTURERS LIFE INSURANCE COMPANY, THE76,426$2,110
MILLENNIUM MANAGEMENT LLC75,879$2,090
AYAL Capital Advisors Ltd72,200$1,988
Fiera Capital Corp71,007$1,957
Zurcher Kantonalbank (Zurich Cantonalbank)64,639$1,783
Nuveen, LLC62,584$1,726
Caldwell Investment Management Ltd.60,800$1,689
GEODE CAPITAL MANAGEMENT, LLC59,255$1,666
LAZARD ASSET MANAGEMENT LLC58,426$1,609
FIL Ltd53,569$1,475
Aviso Financial Inc.51,725$1,425
GUARDIAN CAPITAL LP47,063$1,298
BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp43,753$1,205
BANK OF NOVA SCOTIA TRUST CO30,514$840
Main Management ETF Advisors, LLC29,754$1
SIG North Trading, ULC29,342$808
Purpose Unlimited Inc.28,802$793
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO27,215$751
FRANKLIN RESOURCES INC25,386$699
CITIGROUP INC25,149$694
Candelo Capital Management LP24,700$680
JANE STREET GROUP, LLC22,063$608
MORGAN STANLEY21,491$592
abrdn plc20,007$551
PenderFund Capital Management Ltd.20,000$551
Numerai GP LLC16,305$449
Pictet Asset Management Holding SA16,006$442
VAN ECK ASSOCIATES CORP13,571$0
STIFEL FINANCIAL CORP12,593$347
Third View Private Wealth, LLC12,264$338
Mariner, LLC12,167$335
TRUE Private Wealth Advisors12,080$333
Savant Capital, LLC11,372$313
SkyView Investment Advisors, LLC10,966$0
XTX Topco Ltd10,640$293
Northwest & Ethical Investments L.P.10,553$291
DEUTSCHE BANK AG\10,261$283
Investment Management Corp of Ontario10,116$279
Rockefeller Capital Management L.P.9,790$270
Verition Fund Management LLC9,192$253
ALLIANCEBERNSTEIN L.P.8,960$247
Campbell & CO Investment Adviser LLC8,805$242
Russell Investments Group, Ltd.8,529$235
21 other institutions17,985$491
Total (121 institutions)83,011,700$2,117,408