ATS Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:ATS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
27 Mar 25	BuyUS$6,339,859	Mason Capital Management LLC	Company	237,541	US$26.69
14 Mar 25	BuyUS$1,277,621	Mason Capital Management LLC	Company	47,312	US$27.09
10 Mar 25	BuyUS$106,080	Andrew Hider	Individual	4,000	US$26.52
13 Jan 25	BuyUS$1,485	Giuseppe Tassone	Individual	53	US$29.64
18 Sep 24	BuyUS$15,233,992	Mason Capital Management LLC	Company	565,000	US$27.08

Insider Trading Volume

Insider Buying: ATS insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of ATS?
Owner Type	Number of Shares	Ownership Percentage
General Public	505,891	0.517%
Individual Insiders	793,900	0.811%
Hedge Funds	15,563,568	15.9%
Institutions	81,064,956	82.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 76.67% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15.9%	Mason Capital Management LLC	15,563,568	US$433.4m	4.35%	71.96%
8.48%	Turtle Creek Asset Management Inc.	8,301,528	US$231.2m	-0.44%	6.04%
7.2%	Beutel Goodman & Company Ltd.	7,052,324	US$196.4m	8.24%	0.97%
5.31%	The Bank of Nova Scotia, Banking Investments	5,201,281	US$144.8m	0%	0.32%
5.17%	RBC Global Asset Management Inc.	5,067,568	US$141.1m	28%	0.08%
5.12%	EdgePoint Investment Group Inc.	5,017,996	US$139.7m	41.7%	0.68%
3.29%	The Vanguard Group, Inc.	3,220,572	US$89.7m	-0.27%	no data
2.54%	Hamblin Watsa Investment Counsel Ltd.	2,486,400	US$69.2m	0%	2.07%
2.06%	ACK Asset Management LLC	2,013,196	US$56.1m	-3.82%	8.0%
2.02%	Connor, Clark & Lunn Investment Management Ltd.	1,976,154	US$55.0m	18.2%	0.22%
1.81%	Burgundy Asset Management Ltd.	1,768,782	US$49.3m	21.9%	0.42%
1.77%	Toronto-Dominion Bank, Banking Investments	1,732,957	US$48.3m	2.48%	0.07%
1.64%	ClearBridge Investments, LLC	1,601,599	US$44.6m	-1.61%	0.04%
1.52%	FMR LLC	1,486,643	US$41.4m	-29.1%	no data
1.41%	Invesco Ltd.	1,383,854	US$38.5m	-13.2%	0.01%
1.33%	Hill City Capital LP	1,299,857	US$36.2m	0%	2.21%
1.31%	RBC Dominion Securities Inc., Asset Management Arm	1,285,491	US$35.8m	3.28%	0.04%
1.23%	Mackenzie Financial Corporation	1,200,263	US$33.4m	6.04%	0.04%
1.22%	Capital Research and Management Company	1,196,000	US$33.3m	-65.3%	no data
1.18%	TD Asset Management, Inc.	1,156,862	US$32.2m	32.1%	0.02%
1.14%	Mirae Asset Global Investments Co., Ltd.	1,111,800	US$31.0m	-5.23%	0.02%
1.07%	BMO Asset Management Corp.	1,045,567	US$29.1m	8.64%	0.01%
1.05%	Norges Bank Investment Management	1,027,456	US$28.6m	0%	no data
0.99%	Alberta Investment Management Corporation	966,127	US$26.9m	-11.1%	0.18%
0.94%	Janus Henderson Group plc	922,164	US$25.7m	-0.06%	0.01%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/05/18 12:45
End of Day Share Price	2025/05/16 00:00
Earnings	2024/12/29
Annual Earnings	2024/03/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

ATS Corporation is covered by 20 analysts. 9 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
David Tyerman	Canaccord Genuity
Neil Linsdell	Cantor Fitzgerald Canada Corporation
Michael Willemse	CIBC Capital Markets