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Amentum (AMTM) Institutional Ownership

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$25.68 +0.33 (+1.28%)
Closing price 03:59 PM Eastern
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$25.72 +0.05 (+0.19%)
As of 05:45 PM Eastern
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Institutional Ownership Changes (13F Filings) for Amentum (NYSE:AMTM)

Current
Institutional Ownership
Percentage
39.93%
Number of
Institutional Buyers
(last 12 months)
326
Total
Institutional Inflows
(last 12 months)
$2.22B
Number of
Institutional Sellers
(last 12 months)
116
Total
Institutional Outflows
(last 12 months)
$378.48M
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AMTM Institutional Buying and Selling by Quarter

Amentum Major Shareholders & Ownership History

Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/12/2025MAI Capital Management4,259$101K0.0%+12.3%0.002%
8/12/2025JPMorgan Chase & Co.91,322$2.16M0.0%+4.1%0.038%
8/12/2025Entropy Technologies LP26,167$618K0.0%N/A0.011%
8/12/2025Swiss National Bank302,191$7.14M0.0%+16.6%0.124%
8/12/2025Hikari Tsushin Inc.45,403$1.07M0.1%+6.1%0.019%
8/12/2025Ensign Peak Advisors Inc40,586$958K0.0%+6.1%0.017%
8/11/2025Primecap Management Co. CA12,030,656$284.04M0.2%+19.6%4.944%
8/11/2025Universal Beteiligungs und Servicegesellschaft mbH83,769$1.98M0.0%+290.3%0.034%
8/8/2025 Cetera Investment Advisers14,179$335K0.0%N/A0.006%
8/8/2025 Paragon Capital Management LLC48,710$1.15M0.6%+1.3%0.020%
8/8/2025 Creative Planning34,301$810K0.0%+78.8%0.014%
8/8/2025 Commonwealth of Pennsylvania Public School Empls Retrmt SYS38,732$914K0.0%+12.8%0.016%
8/8/2025 Police & Firemen s Retirement System of New Jersey60,391$1.43M0.0%+161.2%0.025%
8/8/2025 Geode Capital Management LLC2,513,161$59.35M0.0%+9.3%1.033%
8/8/2025 Everett Harris & Co. CA10,085$238K0.0%-67.9%0.004%
8/8/2025 PNC Financial Services Group Inc.13,924$329K0.0%-10.5%0.006%
8/8/2025 KBC Group NV6,126$145K0.0%-16.5%0.003%
8/7/2025 Allworth Financial LP10,256$242K0.0%+24.1%0.004%
8/7/2025 BOK Financial Private Wealth Inc.9,367$221K0.0%-20.0%0.004%
8/7/2025 CSM Advisors LLC633,048$14.95M0.4%-0.8%0.260%
8/6/2025 Marco Investment Management LLC25,157$594K0.0%-14.0%0.010%
8/6/2025 Bryn Mawr Trust Advisors LLC72,728$1.72M0.1%+16.6%0.030%
8/6/2025 Savant Capital LLC26,359$622K0.0%N/A0.011%
8/6/2025 Modera Wealth Management LLC26,224$619K0.0%-5.8%0.011%
8/6/2025 Atlantic Union Bankshares Corp1,075$25K0.0%N/A0.000%
8/5/2025 Crestwood Advisors Group LLC81,774$1.93M0.0%+1.5%0.034%
8/5/2025 Bank of New York Mellon Corp868,206$20.50M0.0%+14.2%0.357%
8/5/2025 Bank of Montreal Can40,669$960K0.0%+14.7%0.017%
8/5/2025 Telos Capital Management Inc.220,718$5.21M0.5%-13.8%0.091%
8/5/2025 Versor Investments LP62,022$1.46M0.3%+57.4%0.025%
8/4/2025 Iat Reinsurance Co. LTD.24,693$583K0.1%N/A0.010%
8/4/2025 Wolverine Asset Management LLC68,040$1.61M0.0%+104.7%0.028%
8/4/2025 Mesirow Financial Investment Management Inc.10,515$248K0.0%N/A0.004%
8/4/2025 Amalgamated Bank45,835$1.08M0.0%+5.7%0.019%
8/4/2025 Lathrop Investment Management Co.27,811$657K0.1%-31.4%0.011%
8/4/2025 Whalen Wealth Management Inc.11,616$274K0.2%N/A0.005%
8/1/2025 Teacher Retirement System of Texas64,845$1.53M0.0%+1.1%0.027%
8/1/2025 Y Intercept Hong Kong Ltd198,726$4.69M0.1%N/A0.082%
8/1/2025 Envestnet Asset Management Inc.96,785$2.29M0.0%-0.4%0.040%
7/31/2025 Nisa Investment Advisors LLC33,630$794K0.0%+10.3%0.014%
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7/31/2025 Oppenheimer Asset Management Inc.12,783$302K0.0%N/A0.005%
7/31/2025 Leavell Investment Management Inc.16,138$381K0.0%+39.0%0.007%
7/31/2025 State of New Jersey Common Pension Fund D100,104$2.36M0.0%+2.5%0.041%
7/31/2025 Washington Trust Advisors Inc.10,379$245K0.0%-80.7%0.004%
7/31/2025 Caitong International Asset Management Co. Ltd1,520$36K0.0%+1,517.0%0.001%
7/30/2025 Ethic Inc.9,149$215K0.0%N/A0.004%
7/29/2025 Stephens Inc. AR27,900$659K0.0%-14.8%0.011%
7/29/2025 Mutual of America Capital Management LLC19,379$458K0.0%-7.5%0.008%
7/29/2025 American Securities LLC45,026,743$1.06B100.0%+2.6%18.505%
7/28/2025 New York State Teachers Retirement System137,435$3.25M0.0%-0.8%0.056%
7/28/2025 Wilmington Savings Fund Society FSB20,849$492K0.0%+4.9%0.009%
7/28/2025 RFG Advisory LLC102,171$2.41M0.1%N/A0.042%
7/25/2025 Yousif Capital Management LLC56,966$1.35M0.0%+22.7%0.023%
7/25/2025 CWM LLC17,482$413K0.0%+303.4%0.007%
7/25/2025 OFI Invest Asset Management2,051$48K0.0%N/A0.001%
7/25/2025 Vanguard Personalized Indexing Management LLC14,605$352K0.0%N/A0.006%
7/24/2025 Blair William & Co. IL56,568$1.34M0.0%+4.4%0.023%
7/24/2025 US Bancorp DE26,122$617K0.0%+10.9%0.011%
7/23/2025 Maryland State Retirement & Pension System51,806$1.22M0.0%+5.7%0.021%
7/23/2025 Louisiana State Employees Retirement System70,500$1.67M0.0%+20.7%0.029%
7/23/2025 Country Club Bank172,318$4.04M0.3%+83.8%0.071%
7/23/2025 Mraz Amerine & Associates Inc.8,550$202K0.0%N/A0.004%
7/22/2025 Chung Wu Investment Group LLC9,744$230K0.2%N/A0.004%
7/21/2025 Intrinsic Value Partners LLC16,679$394K0.4%+5.0%0.007%
7/21/2025 Hahn Capital Management LLC68,748$1.62M0.8%+4.7%0.028%
7/18/2025 Hudson Value Partners LLC185,701$4.38M1.5%-1.4%0.076%
7/18/2025 PFG Investments LLC11,283$266K0.0%N/A0.005%
7/18/2025 Truist Financial Corp22,516$532K0.0%+3.7%0.009%
7/17/2025 Janney Montgomery Scott LLC10,014$236K0.0%-70.3%0.004%
7/16/2025 Cahaba Wealth Management Inc.14,472$342K0.0%+6.1%0.006%
7/16/2025 Signaturefd LLC2,241$53K0.0%+27.0%0.001%
7/16/2025 State of Alaska Department of Revenue89,832$2.12M0.0%+13.2%0.037%
7/16/2025 CX Institutional8,216$194K0.0%+1,240.3%0.003%
7/15/2025 Public Employees Retirement System of Ohio51,304$1.21M0.0%+7.7%0.021%
7/14/2025 GAMMA Investing LLC4,443$105K0.0%+41.6%0.002%
7/14/2025 Clear Harbor Asset Management LLC40,053$946K0.1%-1.2%0.016%
7/14/2025 Toth Financial Advisory Corp10,358$245K0.0%+29.1%0.004%
7/11/2025 CX Institutional8,216$194K0.0%+1,240.3%0.003%
7/11/2025 UMB Bank n.a.4,121$97K0.0%+11.6%0.002%
7/10/2025 Wealth Enhancement Advisory Services LLC155,104$3.76M0.0%+2.2%0.064%
7/8/2025 Lingohr Asset Management GmbH10,000$236K0.4%N/A0.004%
7/8/2025 Parallel Advisors LLC4,180$99K0.0%+195.2%0.002%
7/7/2025 Wesbanco Bank Inc.24,466$578K0.0%+1.7%0.010%
7/2/2025 Neville Rodie & Shaw Inc.29,442$695K0.1%-44.8%0.012%
7/1/2025 Cacti Asset Management LLC848,946$19.91M1.5%+1.7%0.349%
6/18/2025Voya Investment Management LLC628,154$11.43M0.0%+55.4%0.258%
6/6/2025 Hahn Capital Management LLC65,633$1.20M0.6%-15.1%0.027%
5/29/2025Rhumbline Advisers310,103$5.64M0.0%+5.1%0.127%
5/20/2025Focus Partners Wealth23,759$432K0.0%-88.2%0.010%
5/20/2025Security National Bank of Sioux City Iowa IA17,069$311K0.2%+11.8%0.007%
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5/16/2025Jones Financial Companies Lllp7,357$134K0.0%-80.1%0.003%
5/16/2025Ruane Cunniff & Goldfarb L.P.2,393,039$43.55M0.8%-1.8%0.983%
5/16/2025Nexpoint Asset Management L.P.43,900$799K0.1%+144.0%0.018%
5/16/2025Millennium Management LLC2,011,792$36.62M0.0%+68.1%0.827%
5/16/2025Jacobs Levy Equity Management Inc.17,533$319K0.0%-87.9%0.007%
5/16/2025Engine Capital Management LP635,255$11.56M2.2%+2.2%0.261%
5/16/2025BW Gestao de Investimentos Ltda.394,400$7.18M0.2%N/A0.162%
5/16/2025Advisors Asset Management Inc.56,602$1.03M0.0%-20.6%0.023%
5/16/2025American Trust Investment Advisors LLC35,688$650K0.3%-5.7%0.015%
5/16/2025Ancora Advisors LLC68,770$1.25M0.0%+105,700.0%0.028%
(Data available from 1/1/2016 forward)

AMTM Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of AMTM shares?

During the previous two years, 367 institutional investors and hedge funds held shares of Amentum. The most heavily invested institutionals were American Securities LLC ($1.06B), Invesco Ltd. ($312.88M), Vanguard Group Inc. ($297.44M), Primecap Management Co. CA ($284.04M), State Street Corp ($236.31M), Cooper Creek Partners Management LLC ($87.42M), and Geode Capital Management LLC ($59.35M).Learn more on Amentum's institutional investors.

What percentage of Amentum's stock is owned by institutional investors?

39.93% of Amentum's stock is owned by institutional investors. Learn more on AMTM's institutional investor holdings.

Which institutional investors have been buying Amentum's stock?

Of the 328 institutional investors that purchased Amentum's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: American Securities LLC ($45.03M), Kovitz Investment Group Partners LLC ($14.79M), Primecap Management Co. CA ($12.03M), Invesco Ltd. ($9.39M), State Street Corp ($7.33M), Wellington Management Group LLP ($3.73M), and Geode Capital Management LLC ($3.36M).

How much institutional buying is happening at Amentum?

Institutional investors have bought a total of 147,273,944 shares in the last 24 months. This purchase volume represents approximately $2.22B in transactions.

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

Of the 118 institutional investors that sold Amentum's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Kovitz Investment Group Partners LLC ($11.71M), Geode Capital Management LLC ($1.18M), Deutsche Bank AG ($919.31K), Renaissance Technologies LLC ($429.50K), UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC ($400.43K), CenterBook Partners LP ($289.23K), and Focus Partners Wealth ($251.38K).

How much institutional selling is happening at Amentum?

Institutional investors have sold a total of 20,013,075 shares in the last 24 months. This volume of shares sold represents approximately $385.85M in transactions.



This page (NYSE:AMTM) was last updated on 8/12/2025 by MarketBeat.com Staff
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