Pine Valley Investments’s Amentum Holdings AMTM Stock Holding History

Pine Valley Investments’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	$12M	Buy	660,606 +571,118	+638%	+$12M	0.48%	56
2026 Q2	$1.85M	Buy	89,488 +10,213	+13%	+$247K	0.07%	232
2026 Q1	$2.07M	Buy	79,275 +3,381	+4%	+$106K	0.09%	207
2025 Q4	$2.2M	Buy	75,894 +2,197	+3%	+$56.2K	0.1%	188
2025 Q3	$1.77M	Buy	73,697 +29,079	+65%	+$708K	0.09%	218
2025 Q2	$1.05M	Buy	44,618 +4,798	+12%	+$100K	0.06%	260
2025 Q1	$725K	Buy	39,820 +260	+0.7%	+$5.3K	0.04%	291
2024 Q4	$832K	Buy	39,560 +18,567	+88%	+$480K	0.05%	264
2024 Q3	$677K	Buy	+20,993	New	+$598K	0.04%	282

Other funds holding AMTM

Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return

Thompson Siegel & Walmsley Richmond, Virginia $5.37B AUM 3.99% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Cacti Asset Management Atlanta, Georgia $1.89B AUM 58.55% 1-Year Est. Return

Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return

Segra Capital Management Palm Beach, Florida $822M AUM 57.18% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return

Royce & Associates New York $11B AUM 39.4% 1-Year Est. Return

Fifth Third Bancorp Cincinnati, Ohio $61.2B AUM 25.19% 1-Year Est. Return

Mawer Investment Management Calgary, Alberta, Canada $13.6B AUM 13.16% 1-Year Est. Return

Pine Valley Investments's AMTM Position: Q3 2026 in Review

Pine Valley Investments increased its Amentum Holdings (AMTM) stake by 638% in Q3 2026, buying an estimated $12M and bringing the position to 660,606 shares worth $12M. The position accounts for 0.48% of the portfolio, ranked #56.

Pine Valley Investments first reported a position in AMTM in Q3 2024 and has held it in 9 quarters since. 217 funds tracked by Wall St. Rank hold AMTM as of Q3 2026.

Pine Valley Investments held 660,606 shares of Amentum Holdings worth $12M as of Q3 2026.
Pine Valley Investments bought 571,118 Amentum Holdings shares in Q3 2026, an estimated $12M.
Amentum Holdings made up 0.48% of Pine Valley Investments's portfolio in Q3 2026, its #56 holding.
Pine Valley Investments first reported a position in Amentum Holdings in Q3 2024 and has held it in 9 quarters since.
217 funds tracked by Wall St. Rank held Amentum Holdings as of Q3 2026.

Based on Pine Valley Investments's 13F filing for Q3 2026, filed 9 Nov 2026.