Market capitalization is the total value the stock market puts on a company: its share price multiplied by the number of shares outstanding. Each point here is the share count reported in a filing multiplied by the closing price on that filing date, adjusted for later stock splits, so the history moves when a new filing arrives rather than with each day's trading. A larger market cap means investors collectively value the company more highly; by itself it says nothing about profit or debt. Annual points keep the latest observation in each calendar year.
COSTCO WHOLESALE CORP /NEW market cap for the quarter ending 2026-05-27 was $445.17B, a 0.93% decline year-over-year.
COSTCO WHOLESALE CORP /NEW market cap for the quarter ending 2026-05-10 was $447.31B, a 0.04% increase year-over-year.
COSTCO WHOLESALE CORP /NEW market cap for the quarter ending 2026-03-04 was $446.66B, a 3.92% decline year-over-year.
COSTCO WHOLESALE CORP /NEW market cap for the quarter ending 2026-02-15 was $451.82B, a 5.00% decline year-over-year.
COSTCO WHOLESALE CORP /NEW market cap for fiscal 2026 was $445.17B.
COSTCO WHOLESALE CORP /NEW market cap for fiscal 2025 was $388.06B, a 12.11% decline from fiscal 2024.
COSTCO WHOLESALE CORP /NEW market cap for fiscal 2024 was $441.54B, a 55.00% increase from fiscal 2023.
COSTCO WHOLESALE CORP /NEW market cap for fiscal 2023 was $284.87B, a 39.96% increase from fiscal 2022.