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ATS (ATS) Institutional Ownership

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$19.14 -0.06 (-0.33%)
Closing price 09/11/2026 03:58 PM Eastern
Extended Trading
$19.20 +0.06 (+0.30%)
As of 05:01 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

Institutional Ownership Changes (13F Filings) for ATS (NYSE:ATS)

Current
Institutional Ownership
Percentage
75.84%
Number of
Institutional Buyers
(last 12 months)
72
Total
Institutional Inflows
(last 12 months)
$593.83M
Number of
Institutional Sellers
(last 12 months)
37
Total
Institutional Outflows
(last 12 months)
$91.40M
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ATS Institutional Buying and Selling by Quarter

ATS Major Shareholders & Ownership History

Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026 Engineers Gate Manager LP31,363$903K0.0%+140.3%0.032%
9/9/2026 Squarepoint Ops LLC24,760$713K0.0%N/A0.025%
8/22/2026 TD Waterhouse Canada Inc.1,683,683$47.43M0.1%+3.0%1.716%
8/20/2026 Susquehanna International Group LLP34,791$1.00M0.0%N/A0.035%
8/19/2026 Van ECK Associates Corp46,507$1.34M0.0%+91.6%0.047%
8/18/2026 Hill City Capital LP1,649,857$47.48M0.0%N/A1.681%
8/18/2026 Public Employees Retirement System of Ohio28,366$817K0.0%N/A0.029%
8/18/2026 PenderFund Capital Management Ltd.37,700$1.09M0.1%N/A0.038%
8/17/2026 Bank of America Corp DE1,122,152$32.30M0.0%N/A1.144%
8/15/2026 Polar Asset Management Partners Inc.105,203$3.03M0.0%N/A0.107%
8/15/2026 Jupiter Topco LLC2,322,073$66.91M0.0%N/A2.366%
8/14/2026 Legal & General Group Plc1,056,408$30.40M0.0%N/A1.077%
8/14/2026 The Manufacturers Life Insurance Company73,654$2.12M0.0%N/A0.075%
8/14/2026 Front Street Capital Management Inc.124,973$3.60M0.4%N/A0.127%
8/13/2026 Hill City Capital LP1,649,857$47.48M1.2%N/A1.681%
8/13/2026 Cibc World Market Inc.327,087$9.42M0.0%N/A0.333%
8/13/2026 ACK Asset Management LLC1,500,000$43.17M5.0%-18.8%1.529%
8/13/2026 Connor Clark & Lunn Investment Management Ltd.1,089,460$31.37M0.1%N/A1.110%
8/11/2026 Caldwell Investment Management Ltd.60,800$1.75M1.1%N/A0.062%
8/7/2026 K.J. Harrison & Partners Inc100,000$2.88M0.4%N/A0.102%
8/7/2026 Deutsche Bank AG10,811$311K0.0%N/A0.011%
8/6/2026 Alberta Investment Management Corp1,177,491$33.90M0.2%N/A1.200%
8/6/2026 State of Wyoming1,162$33K0.0%N/A0.001%
5/19/2026 Bank of America Corp DE945,875$26.67M0.0%-14.0%0.964%
5/19/2026Janus Henderson Group PLC2,297,214$64.54M0.0%+166.5%2.341%
5/18/2026 Royal Bank of Canada7,761,838$218.88M0.0%+1.5%7.912%
5/18/2026 EdgePoint Investment Group Inc.7,168,112$202.08M1.6%+4.1%7.306%
5/16/2026 The Manufacturers Life Insurance Company74,130$2.09M0.0%-3.0%0.076%
5/16/2026 Lazard Asset Management LLC69,912$1.97M0.0%+19.7%0.071%
5/14/2026 Sei Investments Co.167,820$4.73M0.0%+70.0%0.171%
5/14/2026 State of Wyoming1,215$34K0.0%N/A0.001%
5/13/2026 First Trust Advisors LP154,403$4.35M0.0%-16.1%0.157%
5/7/2026 Van Berkom & Associates Inc.257,360$7.24M0.2%-4.4%0.262%
5/7/2026 Dimensional Fund Advisors LP122,456$3.45M0.0%+11.0%0.125%
5/4/2026 Principal Financial Group Inc.620,840$17.44M0.0%-29.3%0.633%
4/30/2026 Granite Investment Partners LLC173,031$4.88M0.3%-15.1%0.176%
4/28/2026 Montrusco Bolton Investments Inc.170,956$4.80M0.1%-32.9%0.174%
4/22/2026 Pictet Asset Management Holding SA16,423$461K0.0%+2.6%0.017%
3/20/2026 Purpose Unlimited Inc.28,802$793K0.0%N/A0.029%
3/17/2026 Rockefeller Capital Management L.P.9,790$270K0.0%-65.9%0.010%
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2/19/2026 Invesco Ltd.1,272,222$35.04M0.0%+6.3%1.297%
2/18/2026 Mackenzie Financial Corp758,980$21.05M0.0%-33.3%0.774%
2/18/2026SkyView Investment Advisors LLC10,966$302K0.0%N/A0.011%
2/18/2026 XTX Topco Ltd10,640$293K0.0%-21.9%0.011%
2/18/2026 Guardian Capital LP47,063$1.30M0.0%N/A0.048%
2/18/2026 Toronto Dominion Bank81,910$2.26M0.0%+8.6%0.084%
2/18/2026 Numerai GP LLC16,305$449K0.1%N/A0.017%
2/18/2026 Millennium Management LLC75,879$2.09M0.0%+73.2%0.077%
2/18/2026 Investment Management Corp of Ontario10,116$279K0.0%N/A0.010%
2/18/2026Janus Henderson Group PLC861,839$23.77M0.0%-4.1%0.879%
2/18/2026 AYAL Capital Advisors Ltd72,200$1.99M0.7%N/A0.074%
2/17/2026 EdgePoint Investment Group Inc.6,888,785$189.77M1.6%+8.0%7.025%
2/17/2026 Polar Asset Management Partners Inc.180,000$4.96M0.1%N/A0.184%
2/17/2026 Lazard Asset Management LLC58,426$1.61M0.0%N/A0.060%
2/17/2026 FIL Ltd53,569$1.48M0.0%N/A0.055%
2/17/2026 Russell Investments Group Ltd.8,529$235K0.0%-74.2%0.009%
2/17/2026 Royal Bank of Canada7,644,547$210.53M0.0%+8.9%7.796%
2/17/2026 Alberta Investment Management Corp1,340,265$36.92M0.1%+217.5%1.367%
2/16/2026 Verition Fund Management LLC9,192$253K0.0%N/A0.009%
2/16/2026 Mariner LLC12,167$335K0.0%+34.8%0.012%
2/16/2026 Barclays PLC5,264$145K0.0%+16.8%0.005%
2/13/2026 Stifel Financial Corp12,593$347K0.0%+3.9%0.013%
2/13/2026 Smartleaf Asset Management LLC1,052$29K0.0%N/A0.001%
2/13/2026 Public Sector Pension Investment Board287,829$7.93M0.0%+364.9%0.294%
2/13/2026 First Trust Advisors LP184,128$5.07M0.0%+23.8%0.188%
2/13/2026 Charles Schwab Investment Management Inc.236,332$6.52M0.0%+2.5%0.241%
2/13/2026 Van Lanschot Kempen Investment Management N.V.815,031$22.45M0.2%-0.1%0.831%
2/12/2026 Northwest & Ethical Investments L.P.10,553$291K0.0%+22.5%0.011%
2/12/2026 Jane Street Group LLC22,063$608K0.0%N/A0.022%
2/12/2026 Federation des caisses Desjardins du Quebec116,404$3.20M0.0%-40.4%0.119%
2/12/2026 Dimensional Fund Advisors LP110,342$3.04M0.0%+23.7%0.113%
2/12/2026 Granite Investment Partners LLC203,876$5.62M0.3%-1.0%0.208%
2/12/2026 Bank of Montreal Can3,022,693$83.27M0.0%+187.1%3.083%
2/12/2026 Swiss National Bank164,400$4.54M0.0%+2.7%0.168%
2/11/2026 Deutsche Bank AG10,261$283K0.0%-5.8%0.010%
2/11/2026 Franklin Resources Inc.25,386$699K0.0%+60.4%0.026%
2/11/2026 Fiera Capital Corp71,007$1.96M0.0%-23.8%0.072%
2/10/2026 TD Asset Management Inc1,193,208$32.91M0.0%+1.0%1.217%
2/10/2026 Cibc World Market Inc.354,069$9.76M0.0%-4.2%0.361%
2/10/2026 CIBC Asset Management Inc131,500$3.63M0.0%-2.5%0.134%
2/10/2026 Goldman Sachs Group Inc.285,377$7.86M0.0%-43.8%0.291%
2/10/2026 Norges Bank1,079,090$29.73M0.0%N/A1.100%
2/10/2026 Savant Capital LLC11,372$313K0.0%N/A0.012%
2/9/2026 Royce & Associates LP164,500$4.53M0.0%+22.3%0.168%
2/9/2026 Legal & General Group Plc542,023$14.93M0.0%+9.6%0.553%
2/6/2026 Marathon Asset Management Ltd1,097,711$30.28M1.2%-5.9%1.119%
2/2/2026 Van Berkom & Associates Inc.269,136$7.43M0.2%-0.3%0.274%
1/29/2026 Pictet Asset Management Holding SA16,006$442K0.0%+3.0%0.016%
1/29/2026 UBS Group AG228,774$6.30M0.0%-1.2%0.233%
1/29/2026Vanguard Group Inc.3,397,166$93.58M0.0%+1.7%3.464%
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1/29/2026 Montrusco Bolton Investments Inc.254,681$7.03M0.1%-10.3%0.260%
1/27/2026 TD Waterhouse Canada Inc.966,349$26.50M0.2%-32.4%0.985%
1/27/2026 Zurcher Kantonalbank Zurich Cantonalbank64,639$1.78M0.0%-29.4%0.066%
1/23/2026 Third View Private Wealth LLC12,264$338K0.0%N/A0.013%
1/22/2026 Massachusetts Financial Services Co. MA558,675$15.39M0.0%-1.9%0.570%
1/16/2026 Aberdeen Group plc20,007$551K0.0%+7.6%0.020%
11/17/2025 Quarry LP1,238$32K0.0%N/A0.001%
11/17/2025 PenderFund Capital Management Ltd.20,000$523K0.1%N/A0.020%
11/17/2025 National Bank of Canada FI420,025$10.83M0.0%-4.3%0.428%
11/17/2025 Millennium Management LLC43,821$1.15M0.0%N/A0.045%


ATS Institutional Ownership - Frequently Asked Questions

During the previous two years, 146 institutional investors and hedge funds held shares of ATS. The most heavily invested institutionals were Turtle Creek Asset Management Inc. ($254.16M), Royal Bank of Canada ($218.88M), EdgePoint Investment Group Inc. ($202.08M), Beutel Goodman & Co Ltd. ($198.61M), Capital World Investors ($105.21M), Vanguard Group Inc. ($93.58M), and Bank of Montreal Can ($83.27M).Learn more on ATS's institutional investors.

75.84% of ATS's stock is owned by institutional investors. Learn more on ATS's institutional investor holdings.

Of the 121 institutional investors that purchased ATS's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Beutel Goodman & Co Ltd. ($5.43M), Hill City Capital LP ($4.60M), EdgePoint Investment Group Inc. ($3.68M), Norges Bank ($3.13M), Connor Clark & Lunn Investment Management Ltd. ($3.07M), Alberta Investment Management Corp ($2.67M), and Fairfax Financial Holdings Ltd. Can ($2.43M).

Institutional investors have bought a total of 21,105,061 shares in the last 24 months. This purchase volume represents approximately $593.83M in transactions.

Of the 37 institutional investors that sold ATS's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Mackenzie Financial Corp ($651.85K), TD Waterhouse Canada Inc. ($485.97K), ACK Asset Management LLC ($346.20K), Connor Clark & Lunn Investment Management Ltd. ($315.56K), Principal Financial Group Inc. ($257.40K), Goldman Sachs Group Inc. ($222.51K), and Bank of America Corp DE ($154.51K).

Institutional investors have sold a total of 3,338,472 shares in the last 24 months. This volume of shares sold represents approximately $91.40M in transactions.



Institutional ownership data for NYSE:ATS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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