Trade Filings
Managers Stocks Filings Superinvestors
Signals Institutional Buying Institutional Selling Insider Activity 13D & 13G Watch Sector Rotation
Tools Stock Screener Manager Screener Compare Managers Consensus Baskets All Research Tools Data API
Learn & AI Learn Ask the Data AI Agents
News ★ Saved
About About us Methodology Contact Disclaimer
Reader
DATA PLANS

Historical data downloads — coming with accounts.

API GATEWAY

Free read-only JSON access to the site's cached data.

Dark mode

🧭 Guided View
New to markets — prices, yields, YTD, market cap? We explain every term as you browse, in plain English. Same data, with the help built in.

⚡ Expert View
You already know the market. Just the data — clean, fast and compact, with no extra explanations. This is the default view.

Interface language
Security record · archived quarter

ATS

ATS Corporation · Industrials · Industrial - Machinery

19.65 +2.2% mkt cap $1.93B quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
61Tracked holders
+1Δ holders
37.58MShares held
$1.04BReported value
+2New positions
−0Exits
Stable Conviction score 45/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +1.7% · share flow +1.4% · net new positions +3.3%formula
Broad accumulation — rising shares across more holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 60 +1 34.75M $1.01B +7 −5
Q1 2026 59 -1 36.87M $1.04B +3 −5
Q4 2025 61 +1 37.58M $1.04B +2
Q3 2025 10 0 8.16M $212.71M +1 −2
Q2 2025 8 +1 9.52M $303.37M +1
Q1 2025 5 -1 4.78M $118.06M −1
Q4 2024 6 -3 7.04M $212.78M −3
Q3 2024 9 +1 4.54M $131.57M +1
Q2 2024 8 6.45M $208.57M
Holder count
Who holds it · Q4 2025
#ManagerSharesΔ sharesValueTheir weightHeld
1 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
2 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
3 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
4 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
5 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
6 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
7 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
8 Royal Bank Of Canada 7.64M $210.53M 0.0% n/c 1 SEC ↗
9 The Vanguard Group (passive) 3.40M +1.7% $93.58M 0.0% ▲ Add 3 SEC ↗
10 The Vanguard Group (passive) 3.40M +1.7% $93.58M 0.0% ▲ Add 3 SEC ↗
11 The Vanguard Group (passive) 3.40M +1.7% $93.58M 0.0% ▲ Add 3 SEC ↗
12 The Vanguard Group (passive) 3.40M +1.7% $93.58M 0.0% ▲ Add 3 SEC ↗
13 The Vanguard Group (passive) 3.40M +1.7% $93.58M 0.0% ▲ Add 3 SEC ↗
14 Bank Of Montreal /Can/ 3.02M $83.27M 0.0% n/c 1 SEC ↗
15 Bank Of Montreal /Can/ 3.02M $83.27M 0.0% n/c 1 SEC ↗
16 Bank Of Montreal /Can/ 3.02M $83.27M 0.0% n/c 1 SEC ↗
17 Bank Of Montreal /Can/ 3.02M $83.27M 0.0% n/c 1 SEC ↗
18 Bank Of Montreal /Can/ 3.02M $83.27M 0.0% n/c 1 SEC ↗
19 Connor, Clark & Lunn Investment… 2.49M $68.47M 0.2% n/c 1 SEC ↗
20 Fairfax Financial 2.49M 0.0% $68.28M 3.3% Held 6 SEC ↗
21 Fidelity (FMR) 2.12M +54.0% $58.34M 0.0% ▲ Add 3 SEC ↗
22 Fidelity (FMR) 2.12M +54.0% $58.34M 0.0% ▲ Add 3 SEC ↗
23 Invesco Ltd. 1.27M $35.04M 0.0% n/c 1 SEC ↗
24 Invesco Ltd. 1.27M $35.04M 0.0% n/c 1 SEC ↗
25 Invesco Ltd. 1.27M $35.04M 0.0% n/c 1 SEC ↗
26 Invesco Ltd. 1.27M $35.04M 0.0% n/c 1 SEC ↗
27 Td Asset Management Inc 1.19M $32.91M 0.0% n/c 1 SEC ↗
28 Td Asset Management Inc 1.19M $32.91M 0.0% n/c 1 SEC ↗
29 MIRAE ASSET GLOBAL ETFS HOLDINGS… 1.14M $31.50M 0.0% n/c 1 SEC ↗
30 Clearbridge Investments, LLC 1.11M $30.61M 0.0% n/c 1 SEC ↗
31 Bank Of America Corp /De/ 1.10M $30.30M 0.0% n/c 1 SEC ↗
32 Bank Of America Corp /De/ 1.10M $30.30M 0.0% n/c 1 SEC ↗
33 Bank Of America Corp /De/ 1.10M $30.30M 0.0% n/c 1 SEC ↗
34 Bank Of America Corp /De/ 1.10M $30.30M 0.0% n/c 1 SEC ↗
35 Bank Of America Corp /De/ 1.10M $30.30M 0.0% n/c 1 SEC ↗
36 Bank Of America Corp /De/ 1.10M $30.30M 0.0% n/c 1 SEC ↗
37 Norges Bank (passive) 1.08M New $29.73M 0.0% New 1 SEC ↗
38 TD Waterhouse Canada Inc. 966.35K $26.50M 0.2% n/c 1 SEC ↗
39 Principal Financial Group Inc 878.24K $24.22M 0.0% n/c 1 SEC ↗
40 Janus Henderson Group Plc 861.84K $23.77M 0.0% n/c 1 SEC ↗
41 Janus Henderson Group Plc 861.84K $23.77M 0.0% n/c 1 SEC ↗
42 1832 Asset Management L.P. 818.56K $22.54M 0.0% n/c 1 SEC ↗
43 Mackenzie Financial Corp 758.98K $21.05M 0.0% n/c 1 SEC ↗
44 Healthcare Of Ontario Pension Plan… 753.49K $20.76M 0.0% n/c 1 SEC ↗
45 Massachusetts Financial Services Co… 558.67K $15.39M 0.0% n/c 1 SEC ↗
46 Legal & General Group Plc 542.02K $14.93M 0.0% n/c 1 SEC ↗
47 Legal & General Group Plc 542.02K $14.93M 0.0% n/c 1 SEC ↗
48 Legal & General Group Plc 542.02K $14.93M 0.0% n/c 1 SEC ↗
49 National Bank Of Canada /Fi/ 418.33K $11.47M 0.0% n/c 1 SEC ↗
50 National Bank Of Canada /Fi/ 418.33K $11.47M 0.0% n/c 1 SEC ↗
51 National Bank Of Canada /Fi/ 418.33K $11.47M 0.0% n/c 1 SEC ↗
52 Cibc World Market Inc. 354.07K $9.75M 0.0% n/c 1 SEC ↗
53 Goldman Sachs Group 285.38K -43.8% $7.86M 0.0% ▼ Trim 2 SEC ↗
54 Goldman Sachs Group 285.38K -43.8% $7.86M 0.0% ▼ Trim 2 SEC ↗
55 Charles Schwab Investment… 236.33K $6.52M 0.0% n/c 1 SEC ↗
56 UBS Group AG 228.77K $6.30M 0.0% n/c 1 SEC ↗
57 UBS Group AG 228.77K $6.30M 0.0% n/c 1 SEC ↗
58 First Trust Advisors Lp 184.13K $5.07M 0.0% n/c 1 SEC ↗
59 Focus Partners Wealth 181.97K $5.01M 0.0% n/c 1 SEC ↗
60 Swiss National Bank 164.40K $4.54M 0.0% n/c 1 SEC ↗
61 Citadel Advisors 148.84K +113.2% $4.10M 0.0% ▲ Add 3 SEC ↗
62 Citadel Advisors 148.84K +113.2% $4.10M 0.0% ▲ Add 3 SEC ↗
63 CIBC Asset Management Inc 131.50K $3.62M 0.0% n/c 1 SEC ↗
64 Dimensional Fund Advisors Lp 110.34K $3.04M 0.0% n/c 1 SEC ↗
65 Dimensional Fund Advisors Lp 110.34K $3.04M 0.0% n/c 1 SEC ↗
66 Dimensional Fund Advisors Lp 110.34K $3.04M 0.0% n/c 1 SEC ↗
67 Dimensional Fund Advisors Lp 110.34K $3.04M 0.0% n/c 1 SEC ↗
68 D. E. Shaw & Co. 108.10K -50.4% $2.98M 0.0% ▼ Trim 7 SEC ↗
69 Sei Investments Co 98.74K $2.72M 0.0% n/c 1 SEC ↗
70 Toronto Dominion Bank 81.91K $2.26M 0.0% n/c 1 SEC ↗
71 Toronto Dominion Bank 81.91K $2.26M 0.0% n/c 1 SEC ↗
72 Toronto Dominion Bank 81.91K $2.26M 0.0% n/c 1 SEC ↗
73 Manufacturers Life Insurance… 76.43K $2.11M 0.0% n/c 1 SEC ↗
74 Millennium Management 75.88K +73.2% $2.09M 0.0% ▲ Add 2 SEC ↗
75 Zurcher Kantonalbank (Zurich… 64.64K $1.78M 0.0% n/c 1 SEC ↗
76 Nuveen, LLC 62.58K $1.73M 0.0% n/c 1 SEC ↗
77 Geode Capital Management (passive) 59.26K +18.0% $1.67M 0.0% ▲ Add 7 SEC ↗
78 Geode Capital Management (passive) 59.26K +18.0% $1.67M 0.0% ▲ Add 7 SEC ↗
79 Lazard Asset Management Llc 58.43K $1.61M 0.0% n/c 1 SEC ↗
80 FIL Ltd 53.57K $1.47M 0.0% n/c 1 SEC ↗
81 FIL Ltd 53.57K $1.47M 0.0% n/c 1 SEC ↗
82 Franklin Resources Inc 25.39K $699,329 0.0% n/c 1 SEC ↗
83 Franklin Resources Inc 25.39K $699,329 0.0% n/c 1 SEC ↗
84 Franklin Resources Inc 25.39K $699,329 0.0% n/c 1 SEC ↗
85 Citigroup Inc 25.15K $693,696 0.0% n/c 1 SEC ↗
86 Citigroup Inc 25.15K $693,696 0.0% n/c 1 SEC ↗
87 Jane Street Group, Llc 22.06K $607,930 0.0% n/c 1 SEC ↗
88 Jane Street Group, Llc 22.06K $607,930 0.0% n/c 1 SEC ↗
89 Jane Street Group, Llc 22.06K $607,930 0.0% n/c 1 SEC ↗
90 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
91 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
92 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
93 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
94 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
95 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
96 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
97 Morgan Stanley 21.49K -69.1% $591,874 0.0% ▼ Trim 2 SEC ↗
98 Aberdeen Group plc 20.01K $550,993 0.0% n/c 1 SEC ↗
99 Pictet Asset Management Holding SA 16.01K $441,501 0.0% n/c 1 SEC ↗
100 Stifel Financial Corp 12.59K $346,813 0.0% n/c 1 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Norges Bank $29.73M 0.0%

Exited

No tracked exits this quarter.

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 127 holders, 90.41M shares, $2.37B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q4 2025 · Methodology · Get this via the API