Biogen's GAAP net income for 9M 2021 was $1.748 billion, down 2.1 times from $3.703 billion in the prior year. Revenue declined 22.1% to $8.248 billion from $10.592 billion a year earlier.
Biogen's GAAP net income for 9M 2021 was $1.748 billion, down 2.1 times from $3.703 billion in the prior year. Revenue declined 22.1% to $8.248 billion from $10.592 billion a year earlier. 
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