Lido Advisors’s Amentum Holdings AMTM Stock Holding History

Lido Advisors’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 Q1	$1.08M	Buy	+41,500	New	+$1.3M	﹤0.01%	935

Other funds holding AMTM

American Securities New York $3.93B AUM 52.22% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

FCM

Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Lido Advisors's AMTM Position: Q1 2026 in Review

Lido Advisors increased its Amentum Holdings (AMTM) stake by 411% in Q1 2026, buying an estimated $1.27M and bringing the position to 50,345 shares worth $1.31M. The position accounts for ﹤0.01% of the portfolio, ranked #860.

Lido Advisors first reported a position in AMTM in Q3 2024 and has held it in 7 quarters since. 486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

Lido Advisors held 50,345 shares of Amentum Holdings worth $1.31M as of Q1 2026.
Lido Advisors bought 40,496 Amentum Holdings shares in Q1 2026, an estimated $1.27M.
Amentum Holdings made up ﹤0.01% of Lido Advisors's portfolio in Q1 2026, its #860 holding.
Lido Advisors first reported a position in Amentum Holdings in Q3 2024 and has held it in 7 quarters since.
486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on Lido Advisors's 13F filing for Q1 2026, filed 13 May 2026.