AMTM Insider Trading

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Insider Trading History
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About

Insider Ownership Percentage: 18.67%

Insider Buying (Last 12 Months): $2,178,658.00

Insider Selling (Last 12 Months): $0.00

Amentum Insider Trading History Chart

Amentum Share Price & Price History

^$18.74

▲ +0.24 (1.30%)

As of 04/15/2025 04:59 PM ET

Days: 30 | 90 | 365

Amentum Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction	Details
2/18/2025	Barbara Loughran	Director	Buy	4,600	$21.23	$97,658.00	4,600
2/12/2025	Steven J. Demetriou	Insider	Buy	100,000	$20.81	$2,081,000.00	620,893

SEC Filings (Institutional Ownership Changes) for Amentum (NYSE:AMTM)

39.93% of Amentum stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Amentum Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
4/15/2025	Fifth Third Bancorp	2,195	$40K	0.0%	-46.8%	0.001%
4/15/2025	GAMMA Investing LLC	3,137	$57K	0.0%	+78.8%	0.001%
4/14/2025	Yousif Capital Management LLC	46,440	$0.85M	0.0%	-4.8%	0.019%
4/14/2025	Toth Financial Advisory Corp	8,024	$0.15M	0.0%	-55.9%	0.003%
4/14/2025	UMB Bank n.a.	3,691	$67K	0.0%	-54.4%	0.002%
4/8/2025	Rhumbline Advisers	310,103	$5.64M	0.0%	+5.1%	0.127%
4/8/2025	Red Spruce Capital LLC	10,705	$0.20M	0.1%	-11.4%	0.004%
4/7/2025	GAMMA Investing LLC	57,093	$1.04M	0.0%	+3,155.0%	0.023%
4/1/2025	Cacti Asset Management LLC	834,442	$15.08M	1.2%	+1.2%	0.343%
4/1/2025	Neville Rodie & Shaw Inc.	53,343	$0.97M	0.1%	-34.1%	0.022%
3/24/2025	Wellington Management Group LLP	2,333,221	$49.07M	0.0%	+149.5%	0.959%
3/18/2025	California State Teachers Retirement System	131,419	$2.76M	0.0%	-39.3%	0.054%
3/17/2025	Wealth Enhancement Advisory Services LLC	114,744	$2.41M	0.0%	-5.2%	0.047%
2/28/2025	Universal Beteiligungs und Servicegesellschaft mbH	32,165	$0.68M	0.0%	N/A	0.013%
2/27/2025	Jefferies Financial Group Inc.	11,830	$0.25M	0.0%	N/A	0.005%
2/25/2025	Shufro Rose & Co. LLC	13,644	$0.29M	0.0%	N/A	0.006%
2/19/2025	Toronto Dominion Bank	10,000	$0.21M	0.0%	-78.7%	0.004%
2/19/2025	Public Employees Retirement System of Ohio	44,606	$0.94M	0.0%	N/A	0.018%
2/18/2025	Alpine Global Management LLC	25,000	$0.53M	0.1%	N/A	0.010%
2/17/2025	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	273,734	$5.76M	0.0%	-59.4%	0.113%
2/17/2025	Williams Jones Wealth Management LLC.	41,045	$0.86M	0.0%	-81.7%	0.017%
2/17/2025	Vident Advisory LLC	15,263	$0.32M	0.0%	+73.4%	0.006%
2/17/2025	Squarepoint Ops LLC	18,989	$0.40M	0.0%	-51.7%	0.008%
2/17/2025	Westwood Holdings Group Inc.	28,890	$0.61M	0.0%	+169.8%	0.012%
2/17/2025	Tidal Investments LLC	49,457	$1.04M	0.0%	+107.6%	0.020%
2/17/2025	TrinityPoint Wealth LLC	58,726	$1.24M	0.2%	+139.7%	0.024%
2/17/2025	State of Wyoming	2,756	$58K	0.0%	+43.3%	0.001%
2/17/2025	Toronto Dominion Bank	10,000	$0.21M	0.0%	-78.7%	0.004%
2/17/2025	Security National Bank of Sioux City Iowa IA	15,269	$0.32M	0.2%	N/A	0.006%
2/17/2025	Security National Bank of SO Dak	23,299	$0.49M	0.3%	N/A	0.010%
2/17/2025	Point72 Asia Singapore Pte. Ltd.	2,748	$58K	0.0%	+382.1%	0.001%
2/17/2025	Point72 Asset Management L.P.	126,382	$2.66M	0.0%	+2,003.2%	0.052%
2/17/2025	ProShare Advisors LLC	31,054	$0.65M	0.0%	+81.4%	0.013%
2/17/2025	Quantinno Capital Management LP	37,315	$0.79M	0.0%	+36.7%	0.015%
2/17/2025	Nuveen Asset Management LLC	303,885	$6.39M	0.0%	-30.4%	0.125%
2/17/2025	Millennium Management LLC	1,196,574	$25.16M	0.0%	+78.1%	0.492%
2/17/2025	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	869,596	$18.29M	0.0%	+4.5%	0.357%
2/17/2025	Moore Capital Management LP	592,190	$12.45M	0.1%	N/A	0.243%
2/17/2025	Investment Management Corp of Ontario	28,214	$0.59M	0.0%	+4.3%	0.012%
2/17/2025	Jacobs Levy Equity Management Inc.	145,471	$3.06M	0.0%	+76.5%	0.060%
2/17/2025	Janus Henderson Group PLC	66,239	$1.39M	0.0%	-43.4%	0.027%
2/17/2025	Jefferies Financial Group Inc.	11,830	$0.25M	0.0%	N/A	0.005%
2/17/2025	Hyperion Capital Advisors LP	19,563	$0.41M	0.2%	N/A	0.008%
2/17/2025	Focus Partners Wealth	201,344	$4.23M	0.0%	-26.8%	0.083%
2/17/2025	Engine Capital Management LP	621,400	$13.07M	2.4%	N/A	0.255%
2/17/2025	Ensign Peak Advisors Inc	38,260	$0.81M	0.0%	-12.4%	0.016%
2/17/2025	First Manhattan CO. LLC.	17,602	$0.37M	0.0%	N/A	0.007%
2/17/2025	Deutsche Bank AG	14,268	$0.30M	0.0%	-98.5%	0.006%
2/17/2025	D. E. Shaw & Co. Inc.	119,936	$2.52M	0.0%	+38.8%	0.049%
2/17/2025	Cetera Investment Advisers	10,591	$0.22M	0.0%	-31.1%	0.004%
2/17/2025	Centiva Capital LP	104,140	$2.19M	0.0%	N/A	0.043%
2/17/2025	BOKF NA	13,032	$0.29M	0.0%	-7.1%	0.005%
2/17/2025	Captrust Financial Advisors	25,856	$0.54M	0.0%	+5.9%	0.011%
2/17/2025	Baker Avenue Asset Management LP	24,740	$0.52M	0.0%	N/A	0.010%
2/17/2025	Bank of America Corp DE	608,845	$12.80M	0.0%	-15.2%	0.250%
2/17/2025	Ameriprise Financial Inc.	359,227	$7.56M	0.0%	-13.0%	0.148%
2/17/2025	Algert Global LLC	56,842	$1.20M	0.0%	N/A	0.023%
2/17/2025	American Trust Investment Advisors LLC	37,854	$0.80M	0.3%	-1.5%	0.016%
2/17/2025	Aristotle Capital Boston LLC	476,977	$10.03M	0.4%	+944.2%	0.196%
2/17/2025	683 Capital Management LLC	425,000	$8.94M	0.6%	N/A	0.175%
2/14/2025	Mercer Global Advisors Inc. ADV	16,207	$0.34M	0.0%	N/A	0.007%
2/14/2025	Nexpoint Asset Management L.P.	17,995	$0.38M	0.0%	+92.7%	0.007%
2/14/2025	Fifth Lane Capital LP	9,775	$0.21M	0.6%	N/A	0.004%
2/14/2025	Comerica Bank	48,787	$1.03M	0.0%	N/A	0.020%
2/14/2025	Northern Trust Corp	842,219	$17.71M	0.0%	+467.1%	0.346%
2/14/2025	Public Employees Retirement Association of Colorado	12,768	$0.27M	0.0%	N/A	0.005%
2/14/2025	Arosa Capital Management LP	350,000	$7.36M	3.0%	N/A	0.144%
2/14/2025	Berger Financial Group Inc	30,158	$0.63M	0.0%	-13.6%	0.012%
2/14/2025	Boothbay Fund Management LLC	11,250	$0.24M	0.0%	N/A	0.005%
2/14/2025	Kovitz Investment Group Partners LLC	14,787,345	$310.98M	1.0%	+10,851.5%	6.078%
2/14/2025	Voya Investment Management LLC	404,115	$8.50M	0.0%	N/A	0.166%
2/14/2025	Penn Capital Management Company LLC	446,308	$9.39M	0.9%	N/A	0.183%
2/14/2025	CSM Advisors LLC	639,057	$13.44M	0.9%	+646.4%	0.263%
2/14/2025	Price T Rowe Associates Inc. MD	62,126	$1.31M	0.0%	-64.4%	0.026%
2/14/2025	Alpine Global Management LLC	25,000	$0.53M	0.1%	N/A	0.010%
2/14/2025	Hsbc Holdings PLC	119,517	$2.53M	0.0%	-32.0%	0.049%
2/14/2025	Stifel Financial Corp	46,934	$0.99M	0.0%	-28.1%	0.019%
2/14/2025	State of Tennessee Department of Treasury	42,523	$0.89M	0.0%	-64.2%	0.017%
2/14/2025	Voss Capital LP	449,818	$9.46M	0.7%	N/A	0.185%
2/14/2025	Teachers Retirement System of The State of Kentucky	49,584	$1.04M	0.0%	-76.6%	0.020%
2/14/2025	MetLife Investment Management LLC	2,281	$48K	0.0%	-93.0%	0.001%
2/14/2025	Dimensional Fund Advisors LP	1,154,130	$24.28M	0.0%	-8.4%	0.474%
2/13/2025	Canada Pension Plan Investment Board	16,854	$0.35M	0.0%	-91.0%	0.007%
2/13/2025	Avenir Corp	193,470	$4.07M	0.4%	N/A	0.080%
2/13/2025	United Capital Financial Advisors LLC	102,313	$2.15M	0.0%	-21.6%	0.042%
2/13/2025	Keeley Teton Advisors LLC	17,757	$0.37M	0.0%	N/A	0.007%
2/13/2025	XTX Topco Ltd	90,065	$1.89M	0.2%	+1,118.4%	0.037%
2/13/2025	Mariner LLC	38,884	$0.82M	0.0%	-40.1%	0.016%
2/13/2025	Barclays PLC	169,651	$3.57M	0.0%	+6.2%	0.070%
2/13/2025	Granite Investment Partners LLC	38,333	$0.81M	0.0%	-6.2%	0.016%
2/13/2025	Cooper Creek Partners Management LLC	4,157,034	$87.42M	2.7%	+396.3%	1.709%
2/13/2025	Kopernik Global Investors LLC	765,982	$16.11M	1.8%	N/A	0.315%
2/13/2025	Sterling Capital Management LLC	7,475	$0.16M	0.0%	-92.0%	0.003%
2/13/2025	Paralel Advisors LLC	16,329	$0.34M	0.0%	+10.0%	0.007%
2/13/2025	Kennedy Capital Management LLC	15,449	$0.33M	0.0%	N/A	0.006%
2/13/2025	Treasurer of the State of North Carolina	57,093	$1.20M	0.0%	+4.8%	0.023%
2/13/2025	Phoenix Financial Ltd.	18,932	$0.40M	0.0%	N/A	0.008%
2/13/2025	CenterBook Partners LP	71,306	$1.50M	0.1%	N/A	0.029%
2/13/2025	DRW Securities LLC	12,311	$0.26M	0.0%	N/A	0.005%
2/13/2025	Renaissance Technologies LLC	11,000	$0.23M	0.0%	-97.5%	0.005%

Data available starting January 2016

See Full Table

Amentum Holdings, Inc. provides engineering and technology solutions to address challenges in science, security, and sustainability. It serves various markets, such as energy and environment, space, intelligence, defense, civilian, commercial, and international markets. The company was incorporated in 2010 and is headquatered in Chantilly, Virginia.

Today's Range

Now: $18.74

$18.42

$18.93

50 Day Range

MA: $18.95

$16.33

$22.13

52 Week Range

Now: $18.74

$16.01

$34.47

Volume

2,628,756 shs

Average Volume

2,867,642 shs

Market Capitalization

$4.56 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

N/A

Who are the company insiders with the largest holdings of Amentum?: Amentum's top insider investors include:
Steven J Demetriou (Insider)
Barbara Loughran (Director)
Learn More about top insider investors at Amentum.
Who are the major institutional investors of Amentum?: Amentum's top institutional shareholders include:
Cacti Asset Management LLC — 0.34%
Rhumbline Advisers — 0.13%
GAMMA Investing LLC — 0.02%
Neville Rodie & Shaw Inc. — 0.02%
Yousif Capital Management LLC — 0.02%
Red Spruce Capital LLC — 0.00%
Learn More about top institutional investors of Amentum stock.
Which major investors are selling Amentum stock?: In the previous quarter, AMTM stock was sold by these institutional investors:
Neville Rodie & Shaw Inc.
Toth Financial Advisory Corp
UMB Bank n.a.
Yousif Capital Management LLC
Fifth Third Bancorp
Red Spruce Capital LLC
Which major investors are buying Amentum stock?: In the previous quarter, AMTM stock was bought by institutional investors including:
GAMMA Investing LLC
Rhumbline Advisers
Cacti Asset Management LLC
GAMMA Investing LLC
In the previous year, these company insiders have bought Amentum stock:
Steven J Demetriou (Insider)
Barbara Loughran (Director)
Learn More investors buying Amentum stock.