GI
AMTM

GAMMA Investing’s Amentum Holdings AMTM Stock Holding History

GAMMA Investing’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
Q3 		$82.8K Sell
4,569
-389
-8% -$8.15K ﹤0.01% 2010
2026
Q2 		$102K Sell
4,958
-701
-12% -$17K ﹤0.01% 1790
2026
Q1 		$148K Buy
5,659
+354
+7% +$11.1K 0.01% 1345
2025
Q4 		$154K Buy
5,305
+284
+6% +$7.26K 0.01% 1235
2025
Q3 		$120K Buy
5,021
+578
+13% +$14.1K 0.01% 1356
2025
Q2 		$105K Buy
4,443
+1,306
+42% +$27.3K 0.01% 1402
2025
Q1 		$57.1K Buy
3,137
+1,383
+79% +$28.2K ﹤0.01% 1697
2024
Q4 		$36.9K Buy
1,754
+1,349
+333% +$34.9K ﹤0.01% 1898
2024
Q3 		$13.1K Buy
+405
New +$11.5K ﹤0.01% 2340

Other funds holding AMTM

CAM
Cacti Asset Management Atlanta, Georgia $1.89B AUM 58.55% 1-Year Est. Return
SCM
Segra Capital Management Palm Beach, Florida $987M AUM 57.18% 1-Year Est. Return
NRS
Neville Rodie & Shaw New York $1.48B AUM 34.49% 1-Year Est. Return
CI
CX Institutional Auburn, Indiana $3.69B AUM 15.82% 1-Year Est. Return
TFA
Toth Financial Advisory Leesburg, Virginia $1B AUM 19.18% 1-Year Est. Return
FFA
Farther Finance Advisors San Francisco, California $14.2B AUM 18.33% 1-Year Est. Return
CA
CoreCap Advisors Southfield, Michigan $3.48B AUM 21.43% 1-Year Est. Return
EWP
Elevation Wealth Partners Santa Rosa, California $356M AUM 17.04% 1-Year Est. Return
VCM
Versant Capital Management Phoenix, Arizona $1.17B AUM 28.44% 1-Year Est. Return
RF
Roxbury Financial Mount Arlington, New Jersey $130M AUM 20.04% 1-Year Est. Return

GAMMA Investing's AMTM Position: Q3 2026 in Review

GAMMA Investing reduced its Amentum Holdings (AMTM) stake by 7.8% in Q3 2026, selling an estimated $8.15K and leaving 4,569 shares worth $82.8K. The position accounts for ﹤0.01% of the portfolio, ranked #2010.

GAMMA Investing first reported a position in AMTM in Q3 2024 and has held it in 9 quarters since. The position peaked at $154K in Q4 2025. 18 funds tracked by Wall St. Rank hold AMTM as of Q3 2026.

  • GAMMA Investing held 4,569 shares of Amentum Holdings worth $82.8K as of Q3 2026.
  • GAMMA Investing sold 389 Amentum Holdings shares in Q3 2026, an estimated $8.15K.
  • Amentum Holdings made up ﹤0.01% of GAMMA Investing's portfolio in Q3 2026, its #2010 holding.
  • GAMMA Investing first reported a position in Amentum Holdings in Q3 2024 and has held it in 9 quarters since.
  • GAMMA Investing's Amentum Holdings position peaked at $154K in Q4 2025.
  • 18 funds tracked by Wall St. Rank held Amentum Holdings as of Q3 2026.

Based on GAMMA Investing's 13F filing for Q3 2026, filed 8 Oct 2026.