Skip to content
Disclosery

ATS ATS CORPORATION

Follow

COM (common), issuer CIK 1394832

128 managers (130 13F filers) reported a position in ATS shares at 2024-12-31, 85,827,157 shares in all. 14 filers opened a position and 14 filers sold out during the quarter.

Managers
128
13F filers
130
New
14
Added
55
Reduced
48
Sold out
14
Shares held by filers
85,827,157

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2024

Filers in the available 13F reports with a share position at 2024-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
MASON CAPITAL MANAGEMENT LLC14,914,765$455M96.62%013F-HRTimeline
TURTLE CREEK ASSET MANAGEMENT INC.8,338,573$254M6.61%-567,69613F-HRTimeline
Beutel, Goodman & Co Ltd.6,515,682$199M1.08%+5,425,61313F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,307,964$162M0.03%+1,452,66713F-HRTimelineGroup
EdgePoint Investment Group Inc.3,540,639$108M0.85%013F-HRTimeline
Capital World Investors3,449,762$105M0.02%+341,90413F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC3,229,265$98.5M<0.01%+51,36513F-HRTimelineGroup
FAIRFAX FINANCIAL HOLDINGS LTD/ CANin group FAIRFAX FINANCIAL HOLDINGS LT…2,486,400$73.9M4.75%+2,429,70013F-HRTimelineGroup
FMR LLCin group FMR LLC2,096,469$63.9M<0.01%+457,09613F-HRTimelineGroup
ACK Asset Management LLC2,093,196$63.8M8.55%-162,69313F-HRTimeline
FIL Ltdin group FIL Ltd1,865,064$56.9M0.05%-5,430,42513F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…1,671,264$50.9M0.23%+1,285,59813F-HRTimeline
Franklin Resourcesgroup of 2 filers holding1,645,868$50.2M+249,308Timeline
Invesco Ltd.in group Invesco Ltd.1,611,140$49.1M0.01%-1,77413F-HRTimelineGroup
TD Waterhouse Canada Inc.1,635,224$48.4M0.39%+710,92313F-HRTimeline
Burgundy Asset Management Ltd.1,450,528$44.2M0.45%-11,29813F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…1,173,152$35.8M0.08%-13,38913F-HRTimelineGroup
MACKENZIE FINANCIAL CORP1,131,921$34.5M0.05%+221,81613F-HR/ATimeline
Alberta Investment Management Corp1,086,700$33.1M0.22%+148,70013F-HRTimeline
ALLIANCEBERNSTEIN L.P.1,035,524$31.6M0.01%-18,42513F-HRTimeline
NORGES BANK1,027,456$31.3M<0.01%013F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/962,411$29.3M0.01%+275,36513F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson922,704$28.1M0.01%-1,150,15013F-HRTimelineGroup
TD Asset Management Inc876,031$26.7M0.02%+402,47713F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/808,052$24.6M<0.01%+357,32213F-HRTimelineGroup
Fiera Capital Corpin group Fiera Capital Corp721,297$22M0.07%+136,49313F-HRTimelineGroup
Galibier Capital Management Ltd.717,571$21.9M6.24%+584,74113F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC668,140$20.4M0.01%+7,10013F-HRTimelineGroup
1832 Asset Management L.P.662,889$20.2M0.04%+31,89813F-HRTimeline
Canoe Financial LP641,989$19.6M0.32%+18,48013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …637,385$19.5M0.02%-2,163,64013F-HRTimelineGroup
NICOLA WEALTH MANAGEMENT LTD.427,300$18.7M1.77%+46,20013F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD541,730$16.5M0.08%-2,52613F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…538,815$16.4M0.01%-17,09713F-HRTimelineGroup
Federation des caisses Desjardins du Qu…549,760$16.3M0.08%-7,13613F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/493,601$15.1M0.02%+74,95013F-HRTimelineGroup
BRITISH COLUMBIA INVESTMENT MANAGEMENT …466,879$14.2M0.08%+41,48713F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…438,302$13.4M0.03%+194,40013F-HRTimeline
UBS Group AGgroup of 2 filers holding431,617$13.2M+324,565Timeline
Legal & General Group Plcin group Legal & General Group Plc421,882$12.9M<0.01%-70,87813F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…404,823$12.3M0.03%+49,48313F-HRTimelineGroup
INTACT INVESTMENT MANAGEMENT INC.in group INTACT INVESTMENT MANAGEMENT …392,160$12M0.42%+124,15013F-HRTimelineGroup
AVIVA PLCin group AVIVA PLC383,077$11.7M0.03%-4,76713F-HRTimelineGroup
Dixon Mitchell Investment Counsel Inc.336,525$10.3M0.47%013F-HRTimeline
CIBC WORLD MARKET INC.336,202$10.2M0.02%-46,58213F-HRTimeline
Heathbridge Capital Management Ltd.329,000$10M3.99%new13F-HRTimeline
CIBC Asset Management Inc322,713$9.82M0.03%-2,73613F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY311,820$9.5M<0.01%-165,86913F-HR/ATimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …283,858$8.65M0.01%-78,90013F-HRTimelineGroup
Front Street Capital Management, Inc.280,830$8.56M1.49%+48,24513F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC242,202$7.38M<0.01%+157,68013F-HRTimelineGroup
Van Berkom & Associates Inc.235,565$7.18M0.21%-37,26413F-HRTimeline
Candelo Capital Management LP200,850$6.12M3.86%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co198,402$6.05M<0.01%+5,52513F-HRTimelineGroup
SCOTIA CAPITAL INC.191,803$5.68M0.03%-33,10313F-HRTimeline
Swiss National Bank164,500$5.01M<0.01%+90013F-HRTimeline
Scheer, Rowlett & Associates Investment…148,984$4.54M0.33%new13F-HRTimeline
Granite Investment Partners, LLC143,486$4.37M0.19%new13F-HRTimeline
Lombard Odier Asset Management (Europe)…65,837$4.15M0.27%-16,37613F-HRTimeline
JARISLOWSKY, FRASER Ltd134,535$4.1M0.02%-3,27713F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC130,476$3.98M0.12%+71,68713F-HRTimeline
UniSuper Management Pty Ltd87,036$3.82M0.03%-11,00013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC109,921$3.35M<0.01%+10,63213F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP103,497$3.16M<0.01%-7,90413F-HRTimelineGroup
NATIXIS ADVISORS, LLCin group Natixis Investment Managers94,430$2.88M0.01%+4,49513F-HRTimelineGroup
ROYCE & ASSOCIATES LP75,500$2.3M0.02%+13,00013F-HRTimeline
Nuveen Asset Management, LLCin group TIAA67,643$2.06M<0.01%013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…65,458$2M<0.01%+55,71713F-HRTimelineGroup
Onex Canada Asset Management Inc.58,248$1.78M0.21%-6,37213F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK55,760$1.7M<0.01%-42,52113F-HR/ATimelineGroup
Caldwell Investment Management Ltd.48,100$1.45M0.98%013F-HRTimeline
Aviso Financial Inc.45,681$1.39M0.07%+82613F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC41,054$1.26M<0.01%+2,06713F-HRTimelineGroup
Ewing Morris & Co. Investment Partners …28,280$1.24M0.43%new13F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP37,463$1.14M<0.01%+47913F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…33,887$1.03M<0.01%new13F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC32,449$989K<0.01%-8,52113F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.32,300$985K<0.01%-38,28913F-HRTimelineGroup
Amundiin group Amundi28,976$829K<0.01%-1,64213F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…26,375$804K<0.01%+1,50513F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…23,128$705K<0.01%+1,42013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC17,583$536K<0.01%+1613F-HR/ATimelineGroup
Cresset Asset Management, LLC15,704$479K<0.01%-2,09713F-HRTimeline
BANK OF NOVA SCOTIA TRUST COin group BANK OF NOVA SCOTIA15,341$468K0.05%+4,45813F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…14,875$453K<0.01%013F-HRTimelineGroup
Timelo Investment Management Inc.in group Timelo Investment Management …8,000$426K0.96%-7,00013F-HRTimelineGroup
Aberdeen Group plcin group Aberdeen Group plc13,267$401K<0.01%+3,68513F-HRTimelineGroup
Dynasty Wealth Management, LLC12,738$388K0.01%+11913F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN12,275$374K<0.01%-2,43313F-HRTimelineGroup
TRUE Private Wealth Advisors12,080$368K0.04%-24313F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp11,233$342K<0.01%-51113F-HRTimelineGroup
Nebula Research & Development LLC11,081$338K0.04%-3,34413F-HRTimeline
Trexquant Investment LP9,839$300K<0.01%-21,56713F-HRTimeline
Procyon Advisors, LLC9,628$293K0.02%new13F-HRTimeline
Mariner, LLCin group Mariner, LLC9,328$284K<0.01%+68913F-HRTimelineGroup
Engineers Gate Manager LP8,990$274K<0.01%-2,23213F-HRTimeline
CITIGROUP INCin group CITIGROUP INC8,869$270K<0.01%+1,30113F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.8,764$267K<0.01%-36013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
SIMPLEX TRADING, LLC8,065$245K0.01%new13F-HRTimeline
CIDEL ASSET MANAGEMENT INC7,636$233K0.02%-11,07113F-HRTimeline
SkyView Investment Advisors, LLC7,500$229K0.04%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\7,320$223K<0.01%+2,14913F-HR/ATimelineGroup
Northwest & Ethical Investments L.P.6,527$199K0.01%+47813F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC4,919$150K<0.01%-118,66113F-HRTimelineGroup
SHELL ASSET MANAGEMENT CO4,731$144K0.01%013F-HRTimeline
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP2,483$76K<0.01%-1,74713F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,171$66.2K<0.01%+1,84313F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\2,105$64.2K<0.01%-2,11313F-HRTimelineGroup
THURSTON, SPRINGER, MILLER, HERD & TITA…1,772$54K0.01%+86013F-HRTimeline
STEPH & CO1,643$50.1K0.02%-4,36713F-HRTimeline
State of Wyoming905$27.6K<0.01%+22013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.637$19.4K<0.01%-6213F-HR/ATimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO456$13.9K<0.01%-84,01813F-HRTimelineGroup
Leonteq Securities AG177$7.76K<0.01%+7813F-HRTimeline
Washington Trust Advisors, Inc.175$5.33K<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…120$3.66K<0.01%-4913F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP78$2.38K<0.01%+6313F-HRTimelineGroup
Farther Finance Advisors, LLC73$2.23K<0.01%-1413F-HRTimeline
Bogart Wealth, LLC63$1.92K<0.01%new13F-HRTimeline
Geneos Wealth Management Inc.57$1.74K<0.01%new13F-HRTimeline
SALEM INVESTMENT COUNSELORS INC47$1.43K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Pacer Advisors, Inc.45$1.37K<0.01%-1813F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.45$1.37K<0.01%new13F-HRTimelineGroup
Bell Investment Advisors, Inc31$945<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…17$518<0.01%new13F-HRTimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…15$457<0.01%new13F-HRTimelineGroup
WealthCollab, LLC4$122<0.01%013F-HRTimeline
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$00%013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

Events

  • Beutel, Goodman & Co Ltd. reported 4,796,922 ATS shares, 6.4% of the class, as of 2026-08-31, in a 13G/A filed 2026-10-06. 0001361974-26-000011

    Accepted , ingested