Mountaineer Partners Management’s Ardagh Metal Packaging AMBP Stock Holding History

Mountaineer Partners Management’s Portfolio AMBP Stock Details AMBP Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$7.61M	Buy	1,878,082 +408,602	+28%	+$1.81M	3.78%	14
2025 Q4	$6.02M	Sell	1,469,480 -69,004	-4%	-$262K	3.37%	13
2025 Q3	$6.14M	Hold	1,538,484	–	–	3.57%	13
2025 Q2	$6.58M	Buy	1,538,484 +480,764	+45%	+$1.74M	4.35%	14
2025 Q1	$3.19M	Hold	1,057,720	–	–	3.06%	13
2024 Q4	$3.18M	Buy	+1,057,720	New	+$3.81M	2.33%	16
2022 Q1	–	Sell	-1,093,383	Closed	-$9.87M	–	16
2021 Q4	$9.87M	Buy	1,093,383 +39,894	+4%	+$380K	5.57%	12
2021 Q3	$10.5M	Buy	+1,053,489	New	+$11.5M	6.85%	7

Other funds holding AMBP

Canyon Capital Advisors Dallas, Texas $772M AUM 32.81% 1-Year Est. Return

Arini Captial Management London, United Kingdom $634M AUM

BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return

Goldman Sachs New York $761B AUM 31.28% 1-Year Est. Return

Platinum Equity Beverly Hills, California $32.3M AUM 17.64% 1-Year Est. Return

Private Management Group Irvine, California $3.47B AUM 13.39% 1-Year Est. Return

Dimensional Fund Advisors

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Weiss Asset Management Boston, Massachusetts $5.43B AUM 42.42% 1-Year Est. Return

Diameter Capital Partners New York $522M AUM 152.29% 1-Year Est. Return

Empyrean Capital Partners Los Angeles, California $3B AUM 34.24% 1-Year Est. Return