Vault-13

ATS CORPORATION ATS

COM · Common Stock · CUSIP 00217Y104 · ISIN CA00217Y1043

133 institutional holders -5 vs Q1 2024
81,808,03881.8m shares reported held*
83.3% of all shares outstanding*
$2.6bnreported value*
16 new 60 added 39 reduced 20 sold out net bought ≈ $87.1m (+3.2m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.9m this quarter). Holder counts are more reliable. Shares outstanding: 98.2m as of 2024-03-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $32.33. Options: 4 managers hold calls ($1.4m notional), 4 hold puts ($1.9m).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

050100150Q4 22: 1Q1 23: 2Q2 23: 132Q3 23: 129Q4 23: 134Q1 24: 138Q2 24: 133133Q4 22Q2 23Q4 23Q2 24
Numbers
QuarterHolders
Q4 20221
Q1 20232
Q2 2023132
Q3 2023129
Q4 2023134
Q1 2024138
Q2 2024133

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q1 23: 0 bought or addedQ1 23: 0 cut or sold outQ1 23Q2 23: 127 bought or addedQ2 23: 1 cut or sold outQ2 23Q3 23: 67 bought or addedQ3 23: 56 cut or sold outQ3 23Q4 23: 73 bought or addedQ4 23: 56 cut or sold outQ4 23Q1 24: 86 bought or addedQ1 24: 55 cut or sold outQ1 24Q2 24: 76 bought or addedQ2 24: 59 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q1 202300
Q2 20231271
Q3 20236756
Q4 20237356
Q1 20248655
Q2 20247659

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$5m$10m$15mQ3 23 calls: $7.8mQ3 23 puts: $1.7mQ3 23P/C 0.22Q4 23 calls: $0Q4 23 puts: $1.6mQ4 23P/C —Q1 24 calls: $11.0mQ1 24 puts: $2.1mQ1 24P/C 0.19Q2 24 calls: $1.4mQ2 24 puts: $1.9mQ2 24P/C 1.33
Numbers
QuarterCallsPutsP/C
Q3 2023$7.8m$1.7m0.22
Q4 2023$0$1.6m—
Q1 2024$11.0m$2.1m0.19
Q2 2024$1.4m$1.9m1.33

Biggest buyers

FIL Ltd Added +1,867,736+1.9m
MANUFACTURERS LIFE INSURANCE COMPANY, THE Added +1,862,912+1.9m
TURTLE CREEK ASSET MANAGEMENT INC. Added +1,220,008+1.2m
Federation des caisses Desjardins du Quebec Added +1,153,669+1.2m
Invesco Ltd. Added +999,694+999.7k
Capital Research Global Investors New +975,920+975.9k
JANUS HENDERSON GROUP PLC Added +893,597+893.6k
ROYAL BANK OF CANADA Added +780,976+781.0k
Capital World Investors Added +573,488+573.5k
ACK Asset Management LLC Added +460,000+460.0k

Biggest sellers

FMR LLC Reduced -3,070,769-3.1m
Capital International Investors Reduced -1,483,692-1.5m
MORGAN STANLEY Reduced -1,271,749-1.3m
Mirae Asset Global Investments Co., Ltd. Sold out -745,616-745.6k
AMERICAN CENTURY COMPANIES INC Sold out -608,295-608.3k
T. Rowe Price Investment Management, Inc. Sold out -548,385-548.4k
MARSHALL WACE, LLP Reduced -465,883-465.9k
Clearbridge Investments, LLC Reduced -319,596-319.6k
MACKENZIE FINANCIAL CORP Reduced -262,093-262.1k
D. E. Shaw & Co., Inc. Reduced -233,446-233.4k

Biggest calls

D. E. Shaw & Co., Inc. Unchanged $970.9k30.0k shares
SIG North Trading, ULC Reduced $290.8k9.0k shares
CITADEL ADVISORS LLC Added $142.2k4.4k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

SIG North Trading, ULC Added $1.1m33.7k shares
D. E. Shaw & Co., Inc. Added $559.9k17.3k shares
CITADEL ADVISORS LLC Added $222.9k6.9k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
ROYAL BANK OF CANADA 13G · institution +1.4 pts · filed 2026-02-13 6.6% +1.4 pts 6.5m≈ $186.7m 2026-02-13
EdgePoint Investment Group Inc. 13G · institution +1.5 pts · filed 2025-08-14 6.6% +1.5 pts 6.4m≈ $185.2m 2025-08-14
Beutel, Goodman & Co Ltd. 13G · institution +1.5 pts · filed 2026-10-06 6.4% +1.5 pts 4.8m≈ $138.1m 2026-10-06

Fell to 5% or below in the last year: Turtle Creek Asset Management Inc. (5.0%, 2026-05-15)

Insider purchases and sales in Q2 2024

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q2 2024.

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MASON CAPITAL MANAGEMENT LLC 86.14% of their portfolio NEW YORK, NY 14,349,76514.3m $463.6m $463.6m 86.14% Unchanged
2 Capital International Investors 0.05% of their portfolio Los Angeles, CA 6,853,1196.9m $221.8m $221.8m 0.05% Reduced -1.5m -1,483,692
3 Capital World Investors 0.03% of their portfolio LOS ANGELES, CA 5,151,5725.2m $166.7m $166.7m 0.03% Added +573.5k +573,488
4 TURTLE CREEK ASSET MANAGEMENT INC. 4.24% of their portfolio TORONTO, A6 5,095,7385.1m $164.6m $164.6m 4.24% Added +1.2m +1,220,008
5 EdgePoint Investment Group Inc. 0.97% of their portfolio TORONTO, A6 3,540,6393.5m $114.6m $114.6m 0.97% Reduced -19.9k -19,873
6 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.10% of their portfolio Toronto, A6 3,240,4303.2m $104.7m $104.7m 0.10% Added +1.9m +1,862,912
7 ROYAL BANK OF CANADA 0.02% of their portfolio TORONTO, A6 3,125,7003.1m $101.0m $101.0m 0.02% Added +781.0k +780,976
8 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,961,4463.0m $95.7m $95.7m 0.00% Added +45.4k +45,437
9 Connor, Clark & Lunn Investment Management Ltd. 0.30% of their portfolio VANCOUVER, A1 2,181,7252.2m $70.6m $70.6m 0.30% Reduced -193.2k -193,197
10 FIL Ltd 0.07% of their portfolio HAMILTON, D0 2,128,7772.1m $68.9m $68.9m 0.07% Added +1.9m +1,867,736
11 JANUS HENDERSON GROUP PLC 0.04% of their portfolio LONDON, X0 2,070,0002.1m $66.9m $66.9m 0.04% Added +893.6k +893,597
12 Federation des caisses Desjardins du Quebec 0.34% of their portfolio LEVIS, A8 2,018,9842.0m $64.2m $64.2m 0.34% Added +1.2m +1,153,669
13 ACK Asset Management LLC 7.97% of their portfolio GREENWICH, CT 2,000,0002.0m $64.6m $64.6m 7.97% Added +460.0k +460,000
14 FMR LLC 0.00% of their portfolio BOSTON, MA 1,496,7021.5m $48.4m $48.4m 0.00% Reduced -3.1m -3,070,769
15 TD Waterhouse Canada Inc. 0.37% of their portfolio TORONTO, A6 1,276,7421.3m $41.5m $41.5m 0.37% Added +110.2k +110,168
16 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.10% of their portfolio CAUSEWAY BAY, K3 1,273,0931.3m $41.2m $41.2m 0.10% First filing
17 Clearbridge Investments, LLC 0.03% of their portfolio NEW YORK, NY 1,264,6541.3m $40.9m $40.9m 0.03% Reduced -319.6k -319,596
18 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 1,131,3851.1m $36.6m $36.6m 0.01% Added +999.7k +999,694
19 Beutel, Goodman & Co Ltd. 0.19% of their portfolio TORONTO, A6 1,103,0491.1m $35.7m $35.7m 0.19% Reduced -46.2k -46,190
20 ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio NASHVILLE, TN 1,039,7041.0m $33.6m $33.6m 0.01% Reduced -109.6k -109,571
21 Capital Research Global Investors 0.01% of their portfolio Los Angeles, CA 975,920975.9k $31.6m $31.6m 0.01% New
22 NORGES BANK 0.00% of their portfolio OSLO, Q8 957,821957.8k $31.0m $31.0m 0.00% Unchanged
23 MACKENZIE FINANCIAL CORP 0.04% of their portfolio TORONTO ONTARIO, A6 913,919913.9k $29.6m $29.6m 0.04% Reduced -262.1k -262,093
24 Rockefeller Capital Management L.P. 0.07% of their portfolio NEW YORK, NY 768,524768.5k $24.8m $24.8m 0.07% Added +147.3k +147,264
25 BANK OF MONTREAL /CAN/ 0.01% of their portfolio TORONTO, A6 718,649718.6k $24.2m $24.2m 0.01% Added +142.9k +142,908
26 Canoe Financial LP 0.43% of their portfolio CALGARY, A0 686,879686.9k $23.1m $23.1m 0.43% Unchanged
27 TD Asset Management Inc 0.02% of their portfolio Toronto, A6 675,547675.5k $21.9m $21.9m 0.02% Reduced -16.6k -16,635
28 Alberta Investment Management Corp 0.23% of their portfolio EDMONTON, A0 672,100672.1k $21.7m $21.7m 0.23% Added +25.7k +25,700
29 PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio DES MOINES, IA 639,540639.5k $20.7m $20.7m 0.01% Added +279.9k +279,880
30 AGF MANAGEMENT LTD 0.11% of their portfolio TORONTO, A6 637,132637.1k $20.6m $20.6m 0.11% Added +28.0k +28,006
31 1832 Asset Management L.P. 0.04% of their portfolio TORONTO, A6 619,529619.5k $20.0m $20.0m 0.04% Added +180.1k +180,129
32 AVIVA PLC 0.05% of their portfolio LONDON, X0 578,861578.9k $18.7m $18.7m 0.05% Reduced -36.4k -36,394
33 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio Boston, MA 566,410566.4k $18.3m $18.3m 0.01% Reduced -18.7k -18,697
34 Fiera Capital Corp 0.05% of their portfolio MONTREAL, A8 494,361494.4k $16.0m $16.0m 0.05% Reduced -40.3k -40,304
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 481,172481.2k $15.5m $15.5m 0.00% Added +19.9k +19,894
36 Legal & General Group Plc 0.00% of their portfolio London, X0 452,784452.8k $14.6m $14.6m 0.00% Added +2.0k +2,001
37 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 448,490448.5k $14.5m $14.5m 0.00% Reduced -1.3m -1,271,749
38 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 438,283438.3k $14.2m $14.2m 0.00% Added +183.3k +183,303
39 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 388,541388.5k $12.6m $12.6m 0.00% Reduced -7.6k -7,586
40 Capital Group Private Client Services, Inc. 0.12% of their portfolio Los Angeles, CA 371,444371.4k $12.0m $12.0m 0.12% Reduced -22.0k -22,022
41 Allspring Global Investments Holdings, LLC 0.02% of their portfolio CHARLOTTE, NC 359,097359.1k $9.8m $9.8m 0.02% New
42 Capital International, Inc./CA/ 0.15% of their portfolio Los Angeles, CA 350,896350.9k $11.4m $11.4m 0.15% Reduced -15.7k -15,688
43 NATIONAL BANK OF CANADA /FI/ 0.02% of their portfolio MONTREAL, A8 324,493324.5k $10.5m $10.5m 0.02% Added +3.6k +3,617
44 CIBC Asset Management Inc 0.04% of their portfolio TORONTO, Z4 324,180324.2k $10.5m $10.5m 0.04% Added +8.2k +8,205
45 CIBC WORLD MARKET INC. 0.03% of their portfolio TORONTO, A6 315,521315.5k $10.2m $10.2m 0.03% Added +35.9k +35,870
46 Van Berkom & Associates Inc. 0.24% of their portfolio MONTREAL, A8 247,140247.1k $8.0m $8.0m 0.24% Added +14.4k +14,443
47 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 0.05% of their portfolio VICTORIA, A1 245,111245.1k $7.9m $7.9m 0.05% Added +42.9k +42,886
48 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.02% of their portfolio TORONTO, A6 243,902243.9k $7.9m $7.9m 0.02% Reduced -79.7k -79,700
49 Dixon Mitchell Investment Counsel Inc. 0.39% of their portfolio VANCOUVER, A1 238,625238.6k $7.7m $7.7m 0.39% Added +100.0k +100,000
50 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 187,174187.2k $6.1m $6.1m 0.00% New
51 SCOTIA CAPITAL INC. 0.03% of their portfolio TORONTO, A6 184,271184.3k $5.9m $5.9m 0.03% Added +13.7k +13,697
52 THORNBURG INVESTMENT MANAGEMENT INC 0.07% of their portfolio SANTA FE, NM 181,408181.4k $5.3m $5.3m 0.07% Added +3.0k +2,958
53 Swiss National Bank 0.00% of their portfolio ZURICH, V8 166,600166.6k $5.4m $5.4m 0.00% Reduced -800 -800
54 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 166,403166.4k $5.4m $5.4m 0.00% Added +20.4k +20,411
55 CAPITAL INTERNATIONAL SARL 0.16% of their portfolio Los Angeles, CA 164,439164.4k $5.3m $5.3m 0.16% Added +14.7k +14,654
56 Burgundy Asset Management Ltd. 0.06% of their portfolio Toronto, A6 161,563161.6k $5.2m $5.2m 0.06% Added +107.1k +107,110
57 Front Street Capital Management, Inc. 0.85% of their portfolio MISSOULA, MT 136,750136.8k $4.4m $4.4m 0.85% Added +57.9k +57,875
58 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 134,551134.6k $4.3m $4.3m 0.00% Added +62.6k +62,599
59 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 120,001120.0k $3.9m $3.9m 0.00% Reduced -33.1k -33,073
60 Galibier Capital Management Ltd. 0.89% of their portfolio TORONTO, A6 110,830110.8k $3.6m $3.6m 0.89% New
61 CAPITAL INTERNATIONAL LTD /CA/ 0.15% of their portfolio LOS ANGELES, CA 100,238100.2k $3.2m $3.2m 0.15% Added +3.9k +3,915
62 UniSuper Management Pty Ltd 0.04% of their portfolio Melbourne, Victoria, C3 98,03698.0k $4.3m $4.3m 0.04% New
63 Covalis Capital LLP 0.42% of their portfolio LONDON, X0 95,56195.6k $3.1m $3.1m 0.42% Added +22.5k +22,461
64 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 95,31195.3k $3.1m $3.1m 0.00% Reduced -107.0k -106,952
65 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 95,10395.1k $3.1m $3.1m 0.00% New
66 JARISLOWSKY, FRASER Ltd 0.02% of their portfolio MONTREAL, A8 94,54494.5k $3.1m $3.1m 0.02% Added +31.3k +31,313
67 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 84,20584.2k $2.7m $2.7m 0.01% Reduced -11.7k -11,700
68 Lombard Odier Asset Management (Europe) Ltd 0.13% of their portfolio LONDON, X0 83,04783.0k $2.7m $2.7m 0.13% Added +48.3k +48,278
69 NATIXIS ADVISORS, LLC 0.01% of their portfolio Boston, MA 82,74082.7k $2.7m $2.7m 0.01% Reduced -178.9k -178,927
70 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 58,64158.6k $1.9m $1.9m 0.00% Added +52.4k +52,412
71 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 52,46152.5k $1.7m $1.7m 0.00% Reduced -233.4k -233,446
72 Caldwell Investment Management Ltd. 1.17% of their portfolio TORONTO, A6 48,10048.1k $1.6m $1.6m 1.17% Added +24.0k +24,000
73 Aviso Financial Inc. 0.08% of their portfolio TORONTO, A6 45,45945.5k $1.4m $1.4m 0.08% First filing
74 Quadrature Capital Ltd 0.02% of their portfolio LONDON, X0 41,00041.0k $1.3m $1.3m 0.02% Added +20.1k +20,100
75 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 39,75539.8k $1.3m $1.3m 0.00% Added +21.8k +21,810
76 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 37,06737.1k $1.2m $1.2m 0.00% Added +1.4k +1,430
77 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 35,61735.6k $1.2m $1.2m 0.00% Reduced -465.9k -465,883
78 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 31,14731.1k $1.0m $1.0m 0.00% Reduced -27.6k -27,556
79 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 30,65630.7k $992.1k $992.1k 0.00% Added +11.1k +11,077
80 Amundi 0.00% of their portfolio Paris, I0 30,61830.6k $990.2k $990.2k 0.00% Reduced -6.3k -6,289
81 UBS Group AG 0.00% of their portfolio ZURICH, V8 27,66727.7k $893.9k $893.9k 0.00% Reduced -2.3k -2,343
82 ROYCE & ASSOCIATES LP 0.01% of their portfolio New York, NY 25,50025.5k $825.2k $825.2k 0.01% Unchanged
83 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 22,94922.9k $742.3k $742.3k 0.01% Added +13.9k +13,907
84 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 20,76120.8k $670.8k $670.8k 0.00% Unchanged
85 CAPITAL GROUP INVESTMENT MANAGEMENT PTE. LTD. 0.14% of their portfolio Raffles Quay, U0 20,61220.6k $666.9k $666.9k 0.14% Unchanged
86 Cresset Asset Management, LLC 0.00% of their portfolio Chicago, IL 20,05320.1k $647.9k $647.9k 0.00% New
87 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 19,31219.3k $624.8k $624.8k 0.00% Reduced -6.0k -6,029
88 CIDEL ASSET MANAGEMENT INC 0.05% of their portfolio TORONTO, A6 18,10618.1k $585.8k $585.8k 0.05% Reduced -202 -202
89 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 17,45717.5k $564.8k $564.8k 0.00% Added +804 +804
90 Aigen Investment Management, LP 0.11% of their portfolio NEW YORK, NY 17,11217.1k $553.7k $553.7k 0.11% Reduced -7.0k -7,002
91 PDT Partners, LLC 0.05% of their portfolio New York, NY 16,18216.2k $522.8k $522.8k 0.05% New
92 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 14,70914.7k $475.8k $475.8k 0.00% Reduced -1.4k -1,406
93 Aberdeen Group plc 0.00% of their portfolio EDINBURGH, X0 14,65414.7k $473.5k $473.5k 0.00% Reduced -8.4k -8,446
94 SIG North Trading, ULC 0.12% of their portfolio Bala Cynwyd, PA 14,28814.3k $461.6k $461.6k 0.12% Added +6.8k +6,804
95 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 13,77013.8k $444.9k $444.9k 0.00% Reduced -1.3k -1,268
96 Northwest & Ethical Investments L.P. 0.01% of their portfolio TORONTO, A6 12,95913.0k $419.3k $419.3k 0.01% Added +2.0k +2,000
97 Pictet Asset Management Holding SA 0.00% of their portfolio CAROUGE, V8 12,93512.9k $424.9k $424.9k 0.00% Reduced -372 -372
98 TRUE Private Wealth Advisors 0.05% of their portfolio Salem, OR 12,32312.3k $398.2k $398.2k 0.05% Unchanged
99 Dynasty Wealth Management, LLC 0.01% of their portfolio ST. PETERSBURG, FL 11,23511.2k $363.0k $363.0k 0.01% Added +1.2k +1,239
100 ExodusPoint Capital Management, LP 0.00% of their portfolio NEW YORK, NY 11,20011.2k $362.0k $362.0k 0.00% Added +3.2k +3,239