How many institutional investors hold ATS?

1 tracked institutional investor disclosed a position in ATS (ATS CORPORATION) in their most recent 13F filing.

Who is the largest institutional holder of ATS?

Izzy Englander, Millennium Management, holds the largest disclosed position in ATS, valued at $7M.

Where does this ATS ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

ATS — ATS CORPORATION

Name: ATS CORPORATION (ATS) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Public company

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying ATS?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence

Institutional Conviction

Net accumulation · 1 buying vs 0 selling last quarter

Macro Tailwind

Macro conditions are mixed for this sector

Why? — Evidence & Confidence ▾

Of 1 tracked investors who changed their ATS position last quarter, 1 bought and 0 sold (100% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 55/100 in a Squeeze regime).

Supporting evidence

+1 tracked investor added or increased positions last quarter (Ken Griffin)
+1 tracked investors reported holding ATS at their latest filing
+Macro Health is 55/100 in a Squeeze regime — historically acceptable for this sectorsource

Contradicting evidence — always shown

−13F data is disclosed up to 45 days after quarter end — positions may have changed since

Know the limits

· 13F disclosure lag (up to 45 days)
· Tracked investors are a sample, not the whole market
· Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 8/20/2026.

About ATS CORPORATION (ATS)

ATS CORPORATION (ATS) appears in the most recent 13F filings of 1 tracked institutional investor. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $7M. Across recent filings, tracked investors recorded 2 new positions, 4 increased, 2 reduced, and 3 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in ATS

/100

Mixed Activity

Added / Increased6

Reduced2

Exited3

BearishBullish

Crowded Trade Score™

How many top investors track ATS

/100

Undiscovered

1investor

Only 1 tracked investor report this position.

UndiscoveredCrowded

151015+

ATS Ownership Composition

How ATS CORPORATION is held across tracked investor types, based on reported 13F positions.

Dominant Type

Multi-Strategy / Quant

100% of tracked value

Institutions

tracked investors

Total Reported

$2.4M

combined 13F value

Multi-Strategy / Quant100.0%

Multi-Strategy / Quant(1)

100.0%

Tracked investors currently reporting ATS

1 tracked investor has since exited this position — listed separately below.

Investor	Firm	Shares	Market value	% of portfolio	As of
Ken Griffin	Citadel Advisors	82.3K	$2.4M	0.00%	Jun 30, 2026

Ken GriffinJun 30, 2026
Citadel Advisors
Shares
82.3K
Value
$2.4M
% Portfolio
0.00%

Previously held ATS

These investors reported ATS in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.

Investor	Firm	Last reported shares	Value then	Last held
Izzy Englander	Millennium Management	75.9K	$2.1M	Dec 31, 2025

Recent activity

Investor	Action	Δ %	Current value	Filing date
Izzy Englander	Reduced	-62.61%	$1M	Nov 14, 2024
Izzy Englander	Sold	-100.00%	$0	Feb 14, 2025
Izzy Englander	Increased	73.16%	$2.1M	Feb 17, 2026
Izzy Englander	Sold	-100.00%	$0	May 15, 2026
Ken Griffin	Increased	215.64%	$3.9M	Nov 14, 2024
Ken Griffin	Reduced	-54.47%	$433.8K	May 15, 2025
Ken Griffin	Increased	134.44%	$1.3M	Aug 14, 2025
Ken Griffin	Sold	-100.00%	$0	Nov 14, 2025
Ken Griffin	Increased	1.32%	$2.4M	Aug 14, 2026
Ken Griffin	New	—	$1.4M	Aug 14, 2024
Izzy Englander	New	—	$6.8M	May 15, 2024

Izzy Englander
Reduced
$1M(-62.61%)Nov 14, 2024
Izzy Englander
Sold
$0(-100.00%)Feb 14, 2025
Izzy Englander
Increased
$2.1M(73.16%)Feb 17, 2026
Izzy Englander
Sold
$0(-100.00%)May 15, 2026
Ken Griffin
Increased
$3.9M(215.64%)Nov 14, 2024
Ken Griffin
Reduced
$433.8K(-54.47%)May 15, 2025
Ken Griffin
Increased
$1.3M(134.44%)Aug 14, 2025
Ken Griffin
Sold
$0(-100.00%)Nov 14, 2025
Ken Griffin
Increased
$2.4M(1.32%)Aug 14, 2026
Ken Griffin
New
$1.4MAug 14, 2024
Izzy Englander
New
$6.8MMay 15, 2024

Frequently asked questions

How many institutional investors hold ATS?: 1 tracked institutional investor disclosed a position in ATS (ATS CORPORATION) in their most recent 13F filing.
Who is the largest institutional holder of ATS?: Izzy Englander, Millennium Management, holds the largest disclosed position in ATS, valued at $7M.
Did institutional ownership of ATS increase or decrease?: Across recent 13F filings, tracked investors recorded 2 new positions, 4 increased, 2 reduced, and 3 fully exited ATS.
Where does this ATS ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.