Security key
00217Y104
- Security type / class
- Equity / Common Shares
- Total 13F shares
- 85,210,516
- Total 13F value
- $2,593,234,883
- Share change
- +4,800,584
- Put/Call ratio
- 139%
- SEC-reported price per share
- $30.48
- Number of holders
- 123
- Value change
- +$145,810,781
- Number of buys
- 66
- Number of sells
- 59
- Shares outstanding
- 98,129,639
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2024
Institutions
123
Top holders
10
ATS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
ATS Corp /ATS SEC filings
ATS Corp /ATS company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00217Y104
Recent filing periods:
Ownership snapshot
Top reported holders of ATS - ATS Corp /ATS - Common Shares (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
MASON CAPITAL MANAGEMENT LLC
Disclosed value leader
MASON CAPITAL MANAGEMENT LLC
Comparable rows
15/15
Latest evidence
30 Sep 2024
13F
Lead comparable stake: 15%
Showing 1-6 of 15 holder rows.
Quick read
MASON CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 15%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens MASON CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
MASON CAPITAL MANAGEMENT LLC
15%
Turtle Creek Asset Management Inc.
9.1%
FIL Ltd
7.4%
ROYAL BANK OF CANADA
3.9%
EdgePoint Investment Group Inc.
3.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| MASON CAPITAL MANAGEMENT LLC |
13F
Company
|
15%
|
$433,273,923
14,914,765 shares
|
— | 30 Sep 2024 |
| Turtle Creek Asset Management Inc. |
13F
Company
|
9.1%
|
$258,727,114
8,906,269 shares
|
— | 30 Sep 2024 |
| FIL Ltd |
13F
Company
|
7.4%
|
$211,674,304
7,295,489 shares
|
— | 30 Sep 2024 |
| ROYAL BANK OF CANADA |
13F
Company
|
3.9%
|
$111,996,000
3,855,297 shares
|
— | 30 Sep 2024 |
| EdgePoint Investment Group Inc. |
13F
Company
|
3.6%
|
$102,715,686
3,540,639 shares
|
— | 30 Sep 2024 |
| VANGUARD GROUP INC |
13F
Company
|
3.2%
|
$92,203,590
3,177,900 shares
|
— | 30 Sep 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
123
Shares
85,210,516
Rows available
123
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2024 vs Q3 2024 Across Filers
Q3 2024 holders
126
Q4 2024 holders
123
Holder diff
-3
| Investor | Q3 2024 Shares | Q4 2024 Shares | Share Diff | Share Chg % | Q3 2024 value | Q4 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend