Weiss Asset Management’s Biogen BIIB Stock Holding History

Weiss Asset Management’s Portfolio BIIB Stock Details BIIB Fund Activity

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Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	$9.78M	Buy
2024 Q2	–	Sell
2024 Q1	$335K	Buy
2021 Q3	–	Sell
2021 Q2	$1.94M	Buy