Boston Partners’s Amentum Holdings AMTM Stock Holding History

Boston Partners’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
2024 Q4	–	Sell	-2,983,146	Closed	-$95.8M	–	768
2024 Q3	$95.8M	Buy	+2,983,146	New	+$85M	0.11%	213

Other funds holding AMTM

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

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

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

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

CCPM

Cooper Creek Partners Management New York $4.21B AUM 44.81% 1-Year Est. Return

Kovitz Investment Group Partners Chicago, Illinois $4.52B AUM 31.84% 1-Year Est. Return

Allspring Global Investments Charlotte, North Carolina $65.2B AUM 39.42% 1-Year Est. Return

RCG

Ruane, Cunniff & Goldfarb New York $6.43B AUM 18.44% 1-Year Est. Return

Boston Partners's AMTM Position: Q4 2024 in Review

Boston Partners sold out of Amentum Holdings (AMTM) in Q4 2024, closing a stake of 2,983,146 shares — an estimated $95.8M sold.

Boston Partners first reported a position in AMTM in Q3 2024 and held it in 1 quarter. The position peaked at $95.8M in Q3 2024. 451 funds tracked by Wall St. Rank hold AMTM as of Q4 2024.

Boston Partners reported no remaining Amentum Holdings position as of Q4 2024 after selling out during the quarter.
Boston Partners sold 2,983,146 Amentum Holdings shares in Q4 2024, an estimated $95.8M.
Boston Partners first reported a position in Amentum Holdings in Q3 2024 and held it in 1 quarter.
Boston Partners's Amentum Holdings position peaked at $95.8M in Q3 2024.
451 funds tracked by Wall St. Rank held Amentum Holdings as of Q4 2024.

Based on Boston Partners's 13F filing for Q4 2024, filed 11 Feb 2025.