• Costco average price/book ratio for 2023 was 9.42, a 11.05% increase from 2022.
• Costco average price/book ratio for 2022 was 10.59, a 3.72% decline from 2021.
• Costco average price/book ratio for 2021 was 10.21, a 26.83% increase from 2020.

Price/book ratio can be defined as