On December 31, Costco Wholesale (COST) had a market capitalization of $382.2B, based on 444.52M shares at a price of $859.92.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 2025 | $859.92 | 1,489,954 | 444,515,000 | $382,245,471,837.00 |
December 30 2025 | $863.22 | 1,680,756 | 444,515,000 | $383,712,638,046.00 |
December 29 2025 | $865.40 | 1,792,476 | 444,515,000 | $384,683,414,354.50 |
December 26 2025 | $870.89 | 1,324,051 | 444,515,000 | $387,125,802,022.00 |
December 24 2025 | $869.41 | 1,822,151 | 444,515,000 | $386,465,341,635.00 |
December 23 2025 | $852.39 | 1,903,349 | 444,515,000 | $378,898,807,305.00 |
December 22 2025 | $847.61 | 2,373,318 | 444,515,000 | $376,775,536,956.00 |
December 19 2025 | $853.21 | 10,097,640 | 444,515,000 | $379,266,687,919.00 |
December 18 2025 | $855.18 | 2,467,502 | 444,515,000 | $380,139,937,636.50 |
December 17 2025 | $860.22 | 2,363,703 | 444,515,000 | $382,382,871,423.50 |
December 16 2025 | $857.97 | 3,843,318 | 444,515,000 | $381,381,067,968.00 |
December 15 2025 | $858.14 | 4,771,436 | 444,515,000 | $381,456,457,712.00 |
December 12 2025 | $881.98 | 4,808,873 | 444,515,000 | $392,054,895,502.50 |
December 11 2025 | $881.99 | 3,041,582 | 444,515,000 | $392,059,340,652.50 |
December 10 2025 | $871.95 | 3,318,294 | 444,515,000 | $387,595,654,377.00 |
December 09 2025 | $885.94 | 1,899,463 | 444,515,000 | $393,814,685,936.00 |
December 08 2025 | $885.03 | 2,407,918 | 444,515,000 | $393,406,887,875.00 |
December 05 2025 | $892.16 | 2,359,794 | 444,515,000 | $396,580,636,072.00 |
December 04 2025 | $893.34 | 3,787,830 | 444,515,000 | $397,101,474,297.50 |
December 03 2025 | $919.67 | 1,886,769 | 444,515,000 | $408,805,909,859.50 |
December 02 2025 | $919.44 | 2,160,592 | 444,515,000 | $408,703,982,570.00 |
December 01 2025 | $909.40 | 2,087,400 | 444,515,000 | $404,240,296,294.50 |
November 28 2025 | $911.02 | 1,092,450 | 444,515,000 | $404,962,810,975.50 |
November 26 2025 | $905.71 | 1,936,171 | 444,515,000 | $402,600,213,750.50 |
November 25 2025 | $891.82 | 2,534,731 | 444,515,000 | $396,425,500,337.00 |