Swiss National Bank’s Amentum Holdings AMTM Stock Holding History

Swiss National Bank’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	$6.57M	Buy	318,091 +4,700	+1%	+$114K	﹤0.01%	1283
2026 Q1	$8.17M	Buy	313,391 +1,600	+0.5%	+$50.2K	﹤0.01%	1066
2025 Q4	$9.04M	Buy	311,791 +5,300	+2%	+$135K	0.01%	1023
2025 Q3	$7.34M	Buy	306,491 +4,300	+1%	+$105K	﹤0.01%	1120
2025 Q2	$7.13M	Buy	302,191 +42,991	+17%	+$898K	﹤0.01%	1095
2025 Q1	$4.72M	Sell	259,200 -4,000	-2%	-$81.5K	﹤0.01%	1295
2024 Q4	$5.54M	Sell	263,200 -49,600	-16%	-$1.28M	﹤0.01%	1270
2024 Q3	$10.1M	Buy	+312,800	New	+$8.91M	0.01%	935

Other funds holding AMTM

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

TCA

Troluce Capital Advisors Dorado, Puerto Rico $971M AUM 2.27% 1-Year Est. Return

Swiss National Bank's AMTM Position: Q2 2026 in Review

Swiss National Bank increased its Amentum Holdings (AMTM) stake by 1.5% in Q2 2026, buying an estimated $114K and bringing the position to 318,091 shares worth $6.57M. The position accounts for ﹤0.01% of the portfolio, ranked #1283.

Swiss National Bank first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $10.1M in Q3 2024. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

Swiss National Bank held 318,091 shares of Amentum Holdings worth $6.57M as of Q2 2026.
Swiss National Bank bought 4,700 Amentum Holdings shares in Q2 2026, an estimated $114K.
Amentum Holdings made up ﹤0.01% of Swiss National Bank's portfolio in Q2 2026, its #1283 holding.
Swiss National Bank first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
Swiss National Bank's Amentum Holdings position peaked at $10.1M in Q3 2024.
458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Swiss National Bank's 13F filing for Q2 2026, filed 11 Aug 2026.