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.

Q1 2026 vs. Q4 2025

How the institutions holding ATS Corp changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of ATS: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	122	2	131	+11
Shares	83.2M	4.48M	85.1M	+6.39M (+8.1%)
Value	$2.30B	$123.3M	$2.39B	+$214.3M (+9.8%)

2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (24)

Institutions that held ATS Corp at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to ATS in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Capital Management LLC	2,366,730	$66.7M	0.00%
Vinva Investment Management Ltd	2,088,947	$36.5M	0.46%
Vanguard Fiduciary Trust Co	728,058	$20.5M	0.01%
Vanguard Global Advisers, LLC	258,998	$7.30M	0.00%
Waratah Capital Advisors Ltd.	223,983	$6.32M	0.57%
ArrowMark Colorado Holdings LLC	174,000	$4.91M	0.13%
Harbor Capital Advisors, Inc.	103,168	$2.91M	0.24%
Vanguard Asset Management, Ltd	66,830	$1.88M	0.00%
Intact Investment Management Inc.	53,389	$1.50M	0.04%
PCJ Investment Counsel Ltd.	50,000	$1.41M	0.40%
ExodusPoint Capital Management, LP	22,050	$621.8K	0.01%
Vanguard Investments Australia, Ltd.	19,315	$544.4K	0.00%
Balyasny Asset Management LLC	14,124	$398.3K	0.00%
Engineers Gate Manager LP	13,052	$368.0K	0.00%
Marshall Wace, LLP	9,920	$279.7K	0.00%
Brevan Howard Capital Management LP	8,424	$237.6K	0.00%
Brinker Capital Investments, LLC	7,994	$225.4K	0.00%
Tower Research Capital LLC (TRC)	7,900	$222.8K	0.01%
Gotham Asset Management, LLC	7,671	$216.3K	0.00%
Acadian Asset Management LLC	5,400	$151.0K	0.00%
State of Wyoming	1,215	$34.3K	0.00%
GWM Advisors LLC	214	$6.03K	0.00%
Wellington-Altus USA Inc.	125	$3.60K	0.00%
Caitong International Asset Management Co., Ltd	17	$479	0.00%

Sold out (13)

Institutions that held ATS Corp at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of ATS in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Healthcare of Ontario Pension Plan Trust Fund	753,492	$20.8M
Agf Management Ltd	400,140	$11.0M
Polar Asset Management Partners Inc.	180,000	$4.96M
Millennium Management LLC	75,879	$2.09M
AYAL Capital Advisors Ltd	72,200	$1.99M
Fiera Capital Corp	71,007	$1.96M
Main Management ETF Advisors, LLC	29,754	$819.0K
Third View Private Wealth, LLC	12,264	$337.8K
XTX Topco Ltd	10,640	$293.0K
Rockefeller Capital Management L.P.	9,790	$270.0K
Verition Fund Management LLC	9,192	$253.1K
Envestnet Asset Management Inc	7,634	$210.4K
Banque Cantonale Vaudoise	261	$7.00K

Not filed for Q1 2026 yet (2)

Institutions that held ATS Corp at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ATS in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	3,397,166	$93.6M
Norges Bank	1,079,090	$29.7M