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Amentum (AMTM) Institutional Ownership

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$25.39 +0.48 (+1.93%)
As of 11:56 AM 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)
308
Total
Institutional Inflows
(last 12 months)
$2.12B
Number of
Institutional Sellers
(last 12 months)
113
Total
Institutional Outflows
(last 12 months)
$375.25M
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AMTM Institutional Buying and Selling by Quarter

Amentum Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
7/23/2025Country Club Bank172,318$4.04M0.3%+83.8%0.071%
7/23/2025Mraz Amerine & Associates Inc.8,550$202K0.0%N/A0.004%
7/22/2025Chung 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%
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%
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5/15/2025AWH Capital L.P.42,500$774K1.1%N/A0.017%
5/15/2025First Manhattan CO. LLC.16,009$291K0.0%-9.1%0.007%
5/15/2025Royal Bank of Canada582,195$10.60M0.0%-5.9%0.239%
5/15/2025Alpine Global Management LLC100,000$1.82M0.5%+300.0%0.041%
5/15/2025Ghisallo Capital Management LLC635,569$11.57M1.0%N/A0.261%
5/15/2025MAI Capital Management3,791$69K0.0%-17.6%0.002%
5/15/2025Quarry LP1,670$30K0.0%N/A0.001%
5/15/2025Vident Advisory LLC292,857$5.33M0.1%+1,818.7%0.120%
5/15/2025Kodai Capital Management LP65,540$1.19M0.0%N/A0.027%
5/15/2025Carlson Capital L.P.28,000$510K0.2%N/A0.012%
5/15/2025Eisler Capital Management Ltd.126,889$2.31M0.0%N/A0.052%
5/14/2025Avenir Corp904,162$16.46M1.7%+367.3%0.372%
5/14/2025Keeley Teton Advisors LLC128,081$2.33M0.3%+621.3%0.053%
5/14/2025CSM Advisors LLC638,057$11.61M0.6%-0.2%0.262%
5/14/2025Comerica Bank248,718$4.53M0.0%+409.8%0.102%
5/14/2025Penn Capital Management Company LLC889,434$16.23M1.6%+99.3%0.366%
5/14/2025Monashee Investment Management LLC360,000$6.55M0.8%N/A0.148%
5/14/2025Voss Capital LP2,220,709$40.42M3.1%+393.7%0.913%
5/14/2025Quantbot Technologies LP28,362$516K0.0%N/A0.012%
5/13/2025Northern Trust Corp854,423$15.55M0.0%+1.4%0.351%
5/13/2025Versor Investments LP39,400$717K0.1%N/A0.016%
5/13/2025Summit Securities Group LLC13,062$238K0.0%N/A0.005%
5/13/2025Freestone Capital Holdings LLC40,027$728K0.0%N/A0.016%
5/13/2025Raymond James Financial Inc.180,572$3.29M0.0%+111.0%0.074%
5/13/2025Seven Grand Managers LLC100,000$1.82M0.4%N/A0.041%
5/13/2025Kovitz Investment Group Partners LLC3,075,305$55.97M0.3%-79.2%1.264%
5/13/2025Rock Creek Group LP25,000$455K0.1%N/A0.010%
5/13/2025Russell Investments Group Ltd.232,933$4.24M0.0%+85.5%0.096%
5/12/2025Public Sector Pension Investment Board455,129$8.28M0.0%+47.2%0.187%
5/12/2025Nuveen LLC287,801$5.24M0.0%N/A0.118%
5/12/2025Invesco Ltd.17,191,110$312.88M0.1%+24.1%7.065%
5/12/2025Wolverine Asset Management LLC33,240$605K0.0%N/A0.014%
5/12/2025Everett Harris & Co. CA31,410$572K0.0%-25.0%0.013%
5/12/2025Swiss National Bank259,200$4.72M0.0%-1.5%0.107%
5/12/2025American Securities LLC43,893,904$798.87M100.0%N/A18.039%
5/9/2025Mutual of America Capital Management LLC20,957$381K0.0%+11.5%0.009%
5/9/2025CenterBook Partners LP414,574$7.55M0.5%+481.4%0.170%
5/9/2025Deutsche Bank AG17,088$311K0.0%+19.8%0.007%
5/9/2025Charles Schwab Investment Management Inc.1,549,158$28.20M0.0%+22.5%0.637%
5/9/2025Primecap Management Co. CA10,061,589$183.12M0.2%+56.9%4.135%
5/9/2025Vanguard Group Inc.16,342,560$297.44M0.0%-1.2%6.717%
5/9/2025Blair William & Co. IL54,200$986K0.0%-3.9%0.022%
5/9/2025PNC Financial Services Group Inc.15,562$283K0.0%-47.7%0.006%
5/8/2025US Bancorp DE23,558$429K0.0%-15.7%0.010%
5/8/2025Shufro Rose & Co. LLC13,034$237K0.0%-4.5%0.005%
5/8/2025 Intrinsic Value Partners LLC15,888$289K0.3%-6.4%0.007%
5/8/2025Natixis Advisors LLC56,858$1.04M0.0%+145.4%0.023%
5/8/2025Tower Bridge Advisors38,888$708K0.1%-58.5%0.016%
5/8/2025Modera Wealth Management LLC27,848$507K0.0%-20.9%0.011%
5/8/2025GSA Capital Partners LLP30,488$555K0.1%N/A0.013%
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5/7/2025Marco Investment Management LLC29,245$532K0.0%-18.7%0.012%
5/7/2025LPL Financial LLC93,022$1.69M0.0%-21.7%0.038%
5/7/2025Zurcher Kantonalbank Zurich Cantonalbank 34,938$636K0.0%-4.4%0.014%
5/6/2025Proficio Capital Partners LLC22,977$412K0.0%-67.9%0.009%
5/6/2025Universal Beteiligungs und Servicegesellschaft mbH21,465$391K0.0%-33.3%0.009%
5/6/2025Clifford Swan Investment Counsel LLC28,630$521K0.0%-2.7%0.012%
5/5/2025Crestwood Advisors Group LLC80,559$1.47M0.0%-13.9%0.033%
5/5/2025Allianz Asset Management GmbH38,700$704K0.0%N/A0.016%
5/5/2025Teachers Retirement System of The State of Kentucky55,816$1.02M0.0%+12.6%0.023%
5/5/2025Paragon Capital Management LLC48,072$875K0.5%-4.0%0.020%
(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, 352 institutional investors and hedge funds held shares of Amentum. The most heavily invested institutionals were American Securities LLC ($798.87M), Invesco Ltd. ($312.88M), Vanguard Group Inc. ($297.44M), State Street Corp ($236.31M), Primecap Management Co. CA ($183.12M), Cooper Creek Partners Management LLC ($87.42M), and Kovitz Investment Group Partners LLC ($55.97M).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 308 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 ($43.89M), Kovitz Investment Group Partners LLC ($14.79M), Primecap Management Co. CA ($10.06M), Invesco Ltd. ($9.39M), State Street Corp ($7.33M), Wellington Management Group LLP ($3.73M), and Cooper Creek Partners Management LLC ($3.32M).

How much institutional buying is happening at Amentum?

Institutional investors have bought a total of 143,060,020 shares in the last 24 months. This purchase volume represents approximately $2.12B in transactions.

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

Of the 113 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), Focus Partners Wealth ($251.38K), and Envestnet Asset Management Inc. ($220.93K).

How much institutional selling is happening at Amentum?

Institutional investors have sold a total of 19,564,242 shares in the last 24 months. This volume of shares sold represents approximately $375.25M in transactions.


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This page (NYSE:AMTM) was last updated on 7/23/2025 by MarketBeat.com Staff
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