• Biogen average price/book ratio for 2023 was 2.72, a 3.55% decline from 2022.
• Biogen average price/book ratio for 2022 was 2.82, a 27.69% decline from 2021.
• Biogen average price/book ratio for 2021 was 3.9, a 0.52% decline from 2020.

Price/book ratio can be defined as