MFIM
AMTM

Mesirow Financial Investment Management’s Amentum Holdings AMTM Stock Holding History

Mesirow Financial Investment 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
2025
Q3 		– Sell
-10,515
Closed -$248K – 565
2025
Q2 		$248K Buy
+10,515
New +$220K ﹤0.01% 475
2025
Q1 		– Sell
-176,931
Closed -$3.72M – 628
2024
Q4 		$3.72M Sell
176,931
-9,059
-5% -$234K 0.07% 150
2024
Q3 		$6M Buy
+185,990
New +$5.3M 0.12% 124

Other funds holding AMTM

AS
American Securities New York $3.75B AUM 23.12% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return
Kovitz Investment Group Partners
Kovitz Investment Group Partners Chicago, Illinois $4.52B AUM 31.84% 1-Year Est. Return
TSW
Thompson Siegel & Walmsley Richmond, Virginia $5.57B AUM 9.46% 1-Year Est. Return

Mesirow Financial Investment Management's AMTM Position: Q3 2025 in Review

Mesirow Financial Investment Management sold out of Amentum Holdings (AMTM) in Q3 2025, closing a stake of 10,515 shares — an estimated $248K sold.

Mesirow Financial Investment Management first reported a position in AMTM in Q3 2024 and held it in 3 quarters. The position peaked at $6M in Q3 2024. 462 funds tracked by Wall St. Rank hold AMTM as of Q3 2025.

  • Mesirow Financial Investment Management reported no remaining Amentum Holdings position as of Q3 2025 after selling out during the quarter.
  • Mesirow Financial Investment Management sold 10,515 Amentum Holdings shares in Q3 2025, an estimated $248K.
  • Mesirow Financial Investment Management first reported a position in Amentum Holdings in Q3 2024 and held it in 3 quarters.
  • Mesirow Financial Investment Management's Amentum Holdings position peaked at $6M in Q3 2024.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q3 2025.

Based on Mesirow Financial Investment Management's 13F filing for Q3 2025, filed 12 Nov 2025.