Adage Capital Partners’s Century Aluminum CENX Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-120,000	Closed	-$4.7M	–	981
2025 Q4	$4.7M	Sell	120,000 -175,000	-59%	-$5.47M	0.01%	770
2025 Q3	$8.66M	Buy	295,000 +5,000	+2%	+$113K	0.01%	659
2025 Q2	$5.23M	Buy	290,000 +35,000	+14%	+$594K	0.01%	700
2025 Q1	$4.73M	Buy	+255,000	New	+$4.9M	0.01%	708
2024 Q4	–	Sell	-10,000	Closed	-$162K	–	890
2024 Q3	$162K	Buy	+10,000	New	+$151K	﹤0.01%	832
2019 Q4	–	Sell	-300,000	Closed	-$1.99M	–	719
2019 Q3	$1.99M	Hold	300,000	–	–	﹤0.01%	662
2019 Q2	$2.07M	Buy	+300,000	New	+$2.23M	0.01%	660
2018 Q4	–	Sell	-600,000	Closed	-$7.18M	–	715
2018 Q3	$7.18M	Sell	600,000 -400,000	-40%	-$5.14M	0.02%	591
2018 Q2	$15.8M	Buy	1,000,000 +100,000	+11%	+$1.69M	0.04%	466
2018 Q1	$14.9M	Buy	+900,000	New	+$18.8M	0.03%	465
2013 Q3	–	Sell	-300,000	Closed	-$2.78M	–	689
2013 Q2	$2.78M	Buy	+300,000	New	+$2.58M	0.01%	629