ATS Corp

ATS

Exchange: NYSE
Industry: General Industrial Machinery & Equipment, NEC
SEC CIK: 0001394832

SEC filings (opens in a new tab)

No open-market purchases or sales by ATS Corp insiders were filed in the last 90 days; 141 institutions reported holding it in 13F filings for Q2 2026, worth $2.37B in total; Fairfax Financial is the only superinvestor holding it.

Q4 2025 vs. Q3 2025

How the institutions holding ATS Corp changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of ATS: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	115	4	122	+11
Shares	83.5M	2.59M	83.2M	+2.23M (+2.8%)
Value	$2.20B	$70.5M	$2.30B	+$173.0M (+8.1%)

4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (24)

Institutions that held ATS Corp at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to ATS in Q4 2025
Institution	Shares	Value	% of portfolio
Norges Bank	1,079,090	$29.7M	0.00%
Polar Asset Management Partners Inc.	180,000	$4.96M	0.10%
Delaney Capital Management Ltd.	153,037	$4.22M	0.70%
SEI Investments Co	98,742	$2.72M	0.00%
AYAL Capital Advisors Ltd	72,200	$1.99M	1.09%
Lazard Asset Management LLC	58,426	$1.61M	0.00%
FIL Ltd	53,569	$1.47M	0.00%
Guardian Capital LP	47,063	$1.30M	0.04%
SIG North Trading, ULC	29,342	$808.1K	0.14%
Purpose Unlimited Inc.	28,802	$793.4K	0.04%
Candelo Capital Management LP	24,700	$680.2K	0.62%
Jane Street Group, LLC	22,063	$607.9K	0.00%
Numerai GP LLC	16,305	$449.0K	0.05%
Third View Private Wealth, LLC	12,264	$337.8K	0.05%
Savant Capital, LLC	11,372	$313.2K	0.00%
SkyView Investment Advisors, LLC	10,966	$302.0K	0.04%
Investment Management Corp of Ontario	10,116	$278.6K	0.00%
Verition Fund Management LLC	9,192	$253.1K	0.00%
Campbell & CO Investment Adviser LLC	8,805	$242.5K	0.01%
Smartleaf Asset Management LLC	1,052	$29.2K	0.00%
Ronald Blue Trust, Inc.	733	$20.2K	0.00%
Hillsdale Investment Management Inc.	600	$16.6K	0.00%
Bank of Jackson Hole Trust	137	$3.77K	0.00%
BlackRock, Inc.	58	$1.60K	0.00%

Sold out (13)

Institutions that held ATS Corp at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of ATS in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Foresight Group Ltd Liability Partnership	388,892	$10.2M
Roubaix Capital, LLC	223,532	$5.86M
Bastion Asset Management Inc.	72,655	$1.90M
Blackstone Group Inc.	49,501	$1.30M
Lombard Odier Asset Management (Switzerland) SA	21,515	$771.1K
Amundi	27,180	$727.3K
Boothbay Fund Management, LLC	10,170	$266.1K
Quantbot Technologies LP	4,665	$122.2K
State of Wyoming	4,262	$111.7K
Quarry LP	1,238	$32.4K
Tower Research Capital LLC (TRC)	1,000	$26.2K
Caitong International Asset Management Co., Ltd	143	$3.75K
Simplex Trading, LLC	67	$1.00K

Not filed for Q4 2025 yet (4)

Institutions that held ATS Corp at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATS in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Burgundy Asset Management Ltd.	1,807,557	$50.0M
Galibier Capital Management Ltd.	447,446	$11.7M
Jarislowsky, Fraser Ltd	334,904	$8.76M
Shell Asset Management Co	1,302	$34.0K