ATS Corp /ATS (ATS)

Accumulating

Institutional accumulation: ownership increased +1.04% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

43.36%

QoQ Change

+1.04%

Total Value

$2.2T

Shares Outstanding

193.8M

Crowding AnalysisCrowded

Holders122of 5,944

Avg: 68

Uncrowded88th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.21x

71th percentile

68 buying56 selling

+24

New

-17

Closed

+1.9M

Net shares

Holding Period Distribution

estimate

Median: 3 QAvg: 3.6 QHolders: 122

Ownership Concentration

Top 5: 49.6%Top 10: 64.5%

MASON CAPITAL MANAGEMENT19.5%

ROYAL BANK OF CANADA9.2%

EdgePoint Investment Group8.5%

Beutel, Goodman & Co6.5%

Turtle Creek Asset Management5.8%

Others (117)50.4%

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Conviction-Weighted Ownership

Median weight: 0.54%Avg weight: 8.69%Max: 75.48%High conviction (>1%): 5

MASON CAPITAL MANAGEMENT

ROYAL BANK OF CANADA

EdgePoint Investment Group

Beutel, Goodman & Co

Turtle Creek Asset Management

BANK OF MONTREAL /CAN/

FAIRFAX FINANCIAL HOLDINGS LTD/ CAN

VANGUARD CAPITAL MANAGEMENT

JANUS HENDERSON GROUP

FMR

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD CAPITAL MANAGEMENT$67M2.4M shr

NEWJANUS HENDERSON GROUP$65M2.3M shr

BOUGHTMASON CAPITAL MANAGEMENT$24M841K shr

SOLDTurtle Creek Asset Management$21M745K shr

BOUGHTEdgePoint Investment Group$8M279K shr

NEWBANK OF MONTREAL /CAN$83M3.0M shr

NEWFMR$58M2.1M shr

SOLDTurtle Creek Asset Management$37M1.3M shr

BOUGHTEdgePoint Investment Group$14M507K shr

BOUGHTConnor, Clark & Lunn Investment Management$12M432K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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