• Costco average price/book ratio for 2023 was 9.41, a 10.97% increase from 2022.
• Costco average price/book ratio for 2022 was 10.57, a 3.63% decline from 2021.
• Costco average price/book ratio for 2021 was 10.2, a 26.87% increase from 2020.

Price/book ratio can be defined as