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ATI (ATI) Institutional Ownership

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$79.41 +1.96 (+2.53%)
Closing price 09/16/2025 03:59 PM Eastern
Extended Trading
$77.77 -1.64 (-2.07%)
As of 08:01 AM Eastern
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Institutional Ownership Changes (13F Filings) for ATI (NYSE:ATI)

Number of
Institutional Buyers
(last 12 months)
318
Total
Institutional Inflows
(last 12 months)
$2.58B
Number of
Institutional Sellers
(last 12 months)
191
Total
Institutional Outflows
(last 12 months)
$2.22B
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ATI Institutional Buying and Selling by Quarter

ATI Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/4/2025 Osaic Holdings Inc.21,305$1.84M0.0%+82.5%0.015%
8/26/2025 Thrivent Financial for Lutherans60,779$5.25M0.0%-0.4%0.044%
8/19/2025 Cape Investment Advisory Inc.1,518$131K0.0%N/A0.001%
8/19/2025 Advisory Services Network LLC17,668$1.53M0.0%-18.0%0.013%
8/18/2025 Hudson Bay Capital Management LP206,803$17.86M0.1%-24.0%0.150%
8/16/2025 FORA Capital LLC38,127$3.29M0.4%N/A0.028%
8/16/2025 Evergreen Capital Management LLC6,647$574K0.0%-16.2%0.005%
8/15/2025 CANADA LIFE ASSURANCE Co80,294$6.94M0.0%-22.8%0.058%
8/15/2025 Tower Research Capital LLC TRC 3,444$297K0.0%-40.8%0.002%
8/15/2025 Corient Private Wealth LLC299,074$25.82M0.0%-1.9%0.217%
8/15/2025 State of Tennessee Department of Treasury63,107$5.45M0.0%-14.6%0.046%
8/15/2025 Captrust Financial Advisors3,534$305K0.0%-23.9%0.003%
8/15/2025 Vident Advisory LLC3,333$288K0.0%-60.0%0.002%
8/15/2025 Tidal Investments LLC4,506$389K0.0%N/A0.003%
8/15/2025 Smartleaf Asset Management LLC972$84K0.0%-55.7%0.001%
8/15/2025 Rafferty Asset Management LLC39,022$3.37M0.0%N/A0.028%
8/15/2025 Scopus Asset Management L.P.98,466$8.50M0.1%N/A0.071%
8/15/2025 Oxford Asset Management LLP8,421$727K0.3%+72.3%0.006%
8/15/2025 MML Investors Services LLC6,918$597K0.0%-8.0%0.005%
8/15/2025 Moore Capital Management LP162,965$14.07M0.2%-12.8%0.118%
8/15/2025 Man Group plc7,512$649K0.0%-5.5%0.005%
8/15/2025 Meiji Yasuda Asset Management Co Ltd.3,383$292K0.0%N/A0.002%
8/15/2025 Lazard Asset Management LLC6,320$545K0.0%+118.5%0.005%
8/15/2025 LMR Partners LLP7,409$640K0.0%N/A0.005%
8/15/2025 Holocene Advisors LP604,781$52.22M0.1%N/A0.439%
8/15/2025 Hudson Bay Capital Management LP206,803$17.86M0.1%-24.0%0.150%
8/15/2025 Engineers Gate Manager LP41,128$3.55M0.0%-80.4%0.030%
8/15/2025 Cubist Systematic Strategies LLC335,884$29M0.1%+34.9%0.244%
8/15/2025 Curi Capital LLC11,816$1.02M0.0%N/A0.009%
8/15/2025 BNP Paribas Financial Markets720,224$62.18M0.0%+552.7%0.523%
8/15/2025 Brevan Howard Capital Management LP39,452$3.41M0.0%-56.1%0.029%
8/15/2025 Bank of America Corp DE622,496$53.75M0.0%-34.1%0.452%
8/15/2025 AQR Capital Management LLC64,942$5.61M0.0%+20.2%0.047%
8/15/2025 Ameriprise Financial Inc.2,109,919$182.17M0.0%-27.7%1.531%
8/14/2025 PDT Partners LLC61,173$5.28M0.3%-37.8%0.044%
8/14/2025 California State Teachers Retirement System132,134$11.41M0.0%+0.8%0.096%
8/14/2025 Raymond James Financial Inc.943,789$81.49M0.0%+11.7%0.685%
8/14/2025 Worldquant Millennium Advisors LLC13,001$1.12M0.0%+41.3%0.009%
8/14/2025 Canada Pension Plan Investment Board295,100$25.48M0.0%+47.3%0.214%
8/14/2025 Soros Fund Management LLC362,695$31.32M0.4%-40.9%0.263%
8/14/2025 Occudo Quantitative Strategies LP12,771$1.10M0.1%N/A0.009%
8/14/2025 Quantinno Capital Management LP11,775$1.02M0.0%+57.1%0.009%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.997,941$86.16M0.2%-1.4%0.724%
8/14/2025 Alliancebernstein L.P.201,028$17.36M0.0%-7.0%0.146%
8/14/2025 Peapack Gladstone Financial Corp2,430$210K0.0%N/A0.002%
8/14/2025 Saraza Management LP305,000$26.33M6.4%N/A0.221%
8/14/2025 Treasurer of the State of North Carolina65,333$5.64M0.0%+15.7%0.047%
8/14/2025 The Manufacturers Life Insurance Company 105,718$9.13M0.0%-5.9%0.077%
8/14/2025 Sei Investments Co.123,166$10.63M0.0%-29.1%0.089%
8/14/2025 Nebula Research & Development LLC34,259$2.96M0.3%+117.1%0.025%
8/14/2025 Frontier Capital Management Co. LLC2,225,724$192.17M1.8%-14.5%1.615%
8/14/2025 NewEdge Advisors LLC863$75K0.0%N/A0.001%
8/14/2025 Sapience Investments LLC34,043$2.94M2.0%-26.3%0.025%
8/14/2025 Albar Capital Partners LLP42,859$3.70M0.6%N/A0.031%
8/14/2025 Dendur Capital LP3,175,000$274.13M24.6%-11.0%2.304%
8/14/2025 State Street Corp5,626,765$485.82M0.0%-2.5%4.082%
8/14/2025 WINTON GROUP Ltd6,231$538K0.0%-70.1%0.005%
8/14/2025 Natixis203,330$17.56M0.1%+101,565.0%0.148%
8/14/2025 Bank of Nova Scotia238,237$20.57M0.0%N/A0.173%
8/14/2025 California Public Employees Retirement System183,104$15.81M0.0%+17.8%0.133%
8/14/2025 Cerity Partners LLC3,247$280K0.0%-66.0%0.002%
8/14/2025 Federated Hermes Inc.448,485$38.72M0.1%+1.2%0.325%
8/13/2025 Gamco Investors INC. ET AL400,800$34.61M0.3%-0.2%0.291%
8/13/2025 Tema Etfs LLC70,654$6.10M1.6%-39.2%0.051%
8/13/2025 Amundi270,403$23.15M0.0%+166.3%0.196%
8/13/2025 Marshall Wace LLP259,392$22.40M0.0%-57.4%0.188%
8/13/2025 First Trust Advisors LP197,214$17.03M0.0%+4.9%0.143%
8/13/2025 Guggenheim Capital LLC65,494$5.66M0.0%+6.7%0.048%
8/13/2025 Channing Capital Management LLC826,631$71.37M2.0%-46.8%0.600%
8/13/2025 EverSource Wealth Advisors LLC2,970$256K0.0%+92.7%0.002%
8/13/2025 Invesco Ltd.3,296,624$284.63M0.0%-32.0%2.392%
8/13/2025 NBW Capital LLC73,557$6.35M1.4%-1.1%0.053%
8/13/2025 Quantbot Technologies LP22,127$1.91M0.0%N/A0.016%
8/13/2025 M&T Bank Corp3,681$317K0.0%N/A0.003%
8/13/2025 Fisher Asset Management LLC627,980$54.22M0.0%-3.6%0.456%
8/13/2025 Edgestream Partners L.P.56,843$4.91M0.1%+10.8%0.041%
8/13/2025 Lido Advisors LLC3,683$318K0.0%-84.5%0.003%
8/13/2025 New York State Common Retirement Fund226,456$19.55M0.0%-37.6%0.164%
8/13/2025 Schroder Investment Management Group532,837$46.01M0.0%+21.3%0.387%
8/13/2025 Neuberger Berman Group LLC778,482$67.21M0.1%-31.2%0.565%
8/13/2025 Norges Bank1,699,392$146.73M0.0%N/A1.233%
8/13/2025 Quadrature Capital Ltd19,219$1.66M0.0%N/A0.014%
8/13/2025 Hsbc Holdings PLC35,684$3.10M0.0%+655.7%0.026%
8/13/2025 Northwestern Mutual Wealth Management Co.17,585$1.52M0.0%-6.2%0.013%
8/13/2025 State Board of Administration of Florida Retirement System88,728$7.66M0.0%+0.6%0.064%
8/13/2025 Quadrant Capital Group LLC16,011$1.38M0.0%-5.0%0.012%
8/13/2025 Choreo LLC3,296$285K0.0%-35.3%0.002%
8/12/2025 FourThought Financial Partners LLC13,082$1.13M0.1%-7.9%0.009%
8/12/2025 Associated Banc Corp2,500$216K0.0%N/A0.002%
8/12/2025 Advisors Asset Management Inc.88,992$7.68M0.1%+7.5%0.065%
8/12/2025 XTX Topco Ltd37,729$3.26M0.1%-13.2%0.027%
8/12/2025 Steward Partners Investment Advisory LLC4,797$414K0.0%-10.9%0.003%
8/12/2025 Ameritas Investment Partners Inc.27,620$2.39M0.1%-2.4%0.020%
8/12/2025Jefferies Financial Group Inc.58,065$5.01M0.0%-20.2%0.042%
8/12/2025 Eisler Capital Management Ltd.6,134$530K0.0%N/A0.004%
8/12/2025 Prudential Financial Inc.302,512$26.12M0.0%+14.5%0.219%
8/12/2025 Charles Schwab Investment Management Inc.1,497,433$129.29M0.0%+0.3%1.086%
8/12/2025 American Century Companies Inc.1,386,116$119.68M0.1%-2.5%1.006%
8/12/2025 Segall Bryant & Hamill LLC373,083$32.21M0.5%+108.9%0.271%
8/12/2025 Bowen Hanes & Co. Inc.1,375,560$118.77M3.0%+0.3%0.998%
(Data available from 1/1/2016 forward)

ATI Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of ATI shares?

During the previous two years, 449 institutional investors and hedge funds held shares of ATI. The most heavily invested institutionals were Vanguard Group Inc. ($1.15B), Capital International Investors ($875.19M), State Street Corp ($485.82M), Capital World Investors ($378.43M), FMR LLC ($364.47M), Invesco Ltd. ($284.63M), and Dendur Capital LP ($274.13M).Learn more on ATI's institutional investors.

Which institutional investors have been buying ATI's stock?

Of the 388 institutional investors that purchased ATI's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Mountaineer Partners Management LLC ($9.24M), Norges Bank ($4.47M), Capital World Investors ($4.32M), Dendur Capital LP ($3.06M), Vanguard Group Inc. ($2.15M), Point72 Asset Management L.P. ($1.97M), and Palestra Capital Management LLC ($1.96M).

How much institutional buying is happening at ATI?

Institutional investors have bought a total of 41,659,212 shares in the last 24 months. This purchase volume represents approximately $2.58B in transactions.

Which of ATI's major shareholders have been selling company stock?

Of the 191 institutional investors that sold ATI's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Thrivent Financial for Lutherans ($7.91M), FMR LLC ($4.14M), Vanguard Group Inc. ($2.00M), Invesco Ltd. ($1.55M), Millennium Management LLC ($1.50M), Federated Hermes Inc. ($1.36M), and Ameriprise Financial Inc. ($1.05M).

How much institutional selling is happening at ATI?

Institutional investors have sold a total of 33,589,470 shares in the last 24 months. This volume of shares sold represents approximately $2.22B in transactions.


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This page (NYSE:ATI) was last updated on 9/17/2025 by MarketBeat.com Staff
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