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ATS Corp

132 hedge funds and large institutions have $2.77B invested in ATS Corp in 2025 Q2 according to their latest regulatory filings, with 21 funds opening new positions, 48 increasing their positions, 52 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed

75% more first-time investments, than exits

New positions opened: 21 | Existing positions closed: 12

27% more capital invested

Capital invested by funds: $2.18B → $2.77B (+$589M)

20% more funds holding in top 10

Funds holding in top 10: 56 (+1)

7% more funds holding

Funds holding: 123132 (+9)

0.31% less ownership

Funds ownership: 89.22%88.92% (-0.31%)

8% less repeat investments, than reductions

Existing positions increased: 48 | Existing positions reduced: 52

71% less call options, than puts

Call options by funds: $2.88M | Put options by funds: $9.82M

Holders
132
Holders Change
+9
Holders Change %
+7.32%
% of All Funds
1.74%
Holding in Top 10
6
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+20%
% of All Funds
0.08%
New
21
Increased
48
Reduced
52
Closed
12
Calls
$2.88M
Puts
$9.82M
Net Calls
-$6.93M
Net Calls Change
-$12.5M
Name Holding Trade Value Shares
Change
Change in
Stake
MCM
1
Mason Capital Management
New York
$496M
TCAM
2
Turtle Creek Asset Management
Ontario, Canada
$242M -$19.5M -710,990 -9%
Royal Bank of Canada
3
Royal Bank of Canada
Ontario, Canada
$226M +$16.3M +594,453 +9%
BGC
4
Beutel, Goodman & Co
Ontario, Canada
$218M -$5.97M -217,836 -3%
EIG
5
EdgePoint Investment Group
Ontario, Canada
$205M +$38.8M +1,416,009 +28%
Vanguard Group
6
Vanguard Group
Pennsylvania
$104M +$1.41M +51,529 +2%
FFH
7
Fairfax Financial Holdings
Ontario, Canada
$79.1M
Connor, Clark & Lunn Investment Management (CC&L)
8
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$75.6M +$10.8M +392,874 +20%
ClearBridge Investments
9
ClearBridge Investments
New York
$58.9M +$6.72M +245,437 +15%
AAM
10
ACK Asset Management
Connecticut
$58.9M -$4.57M -167,000 -8%
BAM
11
Burgundy Asset Management
Ontario, Canada
$57.7M +$1.19M +43,365 +2%
TWC
12
TD Waterhouse Canada
Ontario, Canada
$46.4M -$6.05M -220,776 -13%
Mackenzie Financial
13
Mackenzie Financial
Ontario, Canada
$45M +$5.77M +210,570 +18%
Fidelity Investments
14
Fidelity Investments
Massachusetts
$44.8M -$2.24M -81,631 -5%
TD Asset Management
15
TD Asset Management
Ontario, Canada
$40.7M +$3.34M +122,017 +11%
MAMU
16
Marathon Asset Management (UK)
United Kingdom
$39.3M +$33.8M +1,234,961 New
HCC
17
Hill City Capital
Massachusetts
$39M -$2.05M -75,000 -6%
Capital World Investors
18
Capital World Investors
California
$38.1M
Invesco
19
Invesco
Georgia
$37.9M -$5.86M -213,858 -15%
Mirae Asset Global ETFs Holdings
20
Mirae Asset Global ETFs Holdings
Hong Kong
$35.4M +$32.2K +1,174 +0.1%
Bank of Montreal
21
Bank of Montreal
Ontario, Canada
$35.1M +$1.45M +52,857 +5%
Norges Bank
22
Norges Bank
Norway
$32.8M
Janus Henderson Group
23
Janus Henderson Group
United Kingdom
$29.4M
Bank of America
24
Bank of America
North Carolina
$27.5M -$5.32M -194,131 -18%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
25
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$26.9M +$5.49M +200,300 +31%

ATS Hedge Fund Activity: Q2 2025 in Review

132 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in ATS Corp (ATS) for Q2 2025, worth a combined $2.77B — up 27% from $2.18B a quarter earlier.

Buyers outnumbered sellers: 21 funds opened new ATS positions and 12 closed out — a net gain of 9 holders — while 48 added to existing stakes and 52 trimmed.

The largest buyer was EdgePoint Investment Group, adding an estimated $38.8M. The largest seller was Fidelity International, cutting an estimated $21.4M.

  • 132 institutional investors held ATS Corp (ATS) as of Q2 2025, up from 123 in Q1 2025.
  • Funds reported $2.77B of ATS Corp stock for Q2 2025, up 27% quarter-over-quarter.
  • 21 funds opened new ATS Corp positions in Q2 2025 and 12 closed out, a net change of +9 holders.
  • The largest ATS Corp buyer in Q2 2025 was EdgePoint Investment Group, an estimated $38.8M added.
  • The largest ATS Corp seller in Q2 2025 was Fidelity International, an estimated $21.4M sold.

Based on aggregated 13F filings for Q2 2025.