Bryn Mawr Capital Management’s Amentum Holdings AMTM Stock Holding History

Bryn Mawr Capital Management’s Portfolio AMTM Stock Details AMTM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$2.92M	Buy	141,443 +24,572	+21%	+$594K	0.13%	137
2026 Q1	$3.05M	Buy	116,871 +14,922	+15%	+$468K	0.15%	124
2025 Q4	$2.96M	Buy	101,949 +22,306	+28%	+$570K	0.14%	125
2025 Q3	$1.91M	Buy	79,643 +6,915	+10%	+$168K	0.09%	155
2025 Q2	$1.72M	Buy	72,728 +10,356	+17%	+$216K	0.09%	157
2025 Q1	$1.14M	Buy	62,372 +2,898	+5%	+$59K	0.07%	190
2024 Q4	$1.25M	Buy	59,474 +15,387	+35%	+$398K	0.07%	193
2024 Q3	$1.42M	Buy	+44,087	New	+$1.26M	0.08%	183

Other funds holding AMTM

American Securities New York $3.75B AUM 23.12% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

FCM

Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

Bryn Mawr Capital Management's AMTM Position: Q2 2026 in Review

Bryn Mawr Capital Management increased its Amentum Holdings (AMTM) stake by 21% in Q2 2026, buying an estimated $594K and bringing the position to 141,443 shares worth $2.92M. The position accounts for 0.13% of the portfolio, ranked #137.

Bryn Mawr Capital Management first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $3.05M in Q1 2026. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

Bryn Mawr Capital Management held 141,443 shares of Amentum Holdings worth $2.92M as of Q2 2026.
Bryn Mawr Capital Management bought 24,572 Amentum Holdings shares in Q2 2026, an estimated $594K.
Amentum Holdings made up 0.13% of Bryn Mawr Capital Management's portfolio in Q2 2026, its #137 holding.
Bryn Mawr Capital Management first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
Bryn Mawr Capital Management's Amentum Holdings position peaked at $3.05M in Q1 2026.
462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Bryn Mawr Capital Management's 13F filing for Q2 2026, filed 3 Aug 2026.