ATS Corporation
US ˙ NYSE ˙ CA00217Y1043

SecurityATS / ATS Corporation
Institution1832 Asset Management L.P.
Latest Disclosed Ownership401,696 shares
Latest Disclosed Value $ 11,327,827
1832 Asset Management L.P. reports 50.93% decrease in ownership of ATS / ATS Corporation

On May 14, 2026 - 1832 Asset Management L.P. filed a 13F-HR form disclosing ownership of 401,696 shares of ATS Corporation (US:ATS) valued at $11,327,827 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 818,559 shares of ATS Corporation. This represents a change in shares of -50.93% during the quarter. The current value of the position is $10,813,656 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ATS COM 00217Y104 401,696 -416,863 -50.93 11,328 -49.75 0.0104
2026-02-13 2025-12-31 13F ATS COM 00217Y104 818,559 79,828 10.81 22,543 16.48 0.0172
2025-11-14 2025-09-30 13F ATS COM 00217Y104 738,731 -85,827 -10.41 19,355 -26.37 0.0153
2025-08-13 2025-06-30 13F ATS COM 00217Y104 824,558 -20,494 -2.43 26,287 24.77 0.0205
2025-05-14 2025-03-31 13F ATS COM 00217Y104 845,052 182,163 27.48 21,067 4.27 0.0191
2025-02-14 2024-12-31 13F ATS COM 00217Y104 662,889 31,898 5.06 20,205 10.22 0.0172
2024-11-13 2024-09-30 13F ATS COM 00217Y104 630,991 11,462 1.85 18,330 -8.42 0.0139
2024-08-13 2024-06-30 13F ATS COM 00217Y104 619,529 180,129 40.99 20,017 35.10 0.0163
2024-05-14 2024-03-31 13F ATS COM 00217Y104 439,400 208,200 90.05 14,817 48.80 0.0088
2024-02-13 2023-12-31 13F ATS COM 00217Y104 231,200 -64,060 -21.70 9,958 -20.87 0.0143
2023-11-13 2023-09-30 13F ATS COM 00217Y104 295,260 -47,600 -13.88 12,584 -20.37 0.0178
2023-08-14 2023-06-30 13F ATS COM 00217Y104 342,860 342,860 15,802 0.0307
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.