On December 31, Costco Wholesale (COST) had a market capitalization of $381.1B, based on 443.92M shares at a price of $858.55.
| DATE | CLOSE | VOLUME | OUTSTANDING | MARKET CAP |
|---|---|---|---|---|
December 31 2025 | $858.55 | 1,489,954 | 443,919,000 | $381,126,968,193.30 |
December 30 2025 | $861.85 | 1,680,756 | 443,919,000 | $382,589,903,257.80 |
December 29 2025 | $864.03 | 1,792,476 | 443,919,000 | $383,557,824,245.40 |
December 26 2025 | $869.51 | 1,324,051 | 443,919,000 | $385,993,075,095.60 |
December 24 2025 | $868.03 | 1,822,151 | 443,919,000 | $385,334,521,259.10 |
December 23 2025 | $851.03 | 1,903,349 | 443,919,000 | $377,790,117,854.10 |
December 22 2025 | $846.27 | 2,373,318 | 443,919,000 | $375,673,112,535.00 |
December 19 2025 | $851.86 | 10,097,640 | 443,919,000 | $378,156,972,515.70 |
December 18 2025 | $853.82 | 2,467,502 | 443,919,000 | $379,027,630,850.40 |
December 17 2025 | $858.86 | 2,363,703 | 443,919,000 | $381,264,005,988.60 |
December 16 2025 | $856.61 | 3,843,318 | 443,919,000 | $380,265,143,846.70 |
December 15 2025 | $856.78 | 4,771,436 | 443,919,000 | $380,340,299,333.40 |
December 12 2025 | $880.58 | 4,808,873 | 443,919,000 | $390,907,746,736.50 |
December 11 2025 | $880.59 | 3,041,582 | 443,919,000 | $390,912,185,926.50 |
December 10 2025 | $870.57 | 3,318,294 | 443,919,000 | $386,461,542,816.30 |
December 09 2025 | $884.54 | 1,899,463 | 443,919,000 | $392,662,380,975.90 |
December 08 2025 | $883.62 | 2,407,918 | 443,919,000 | $392,255,751,171.90 |
December 05 2025 | $890.75 | 2,359,794 | 443,919,000 | $395,420,227,763.40 |
December 04 2025 | $891.92 | 3,787,830 | 443,919,000 | $395,939,568,601.50 |
December 03 2025 | $918.21 | 1,886,769 | 443,919,000 | $407,609,755,192.50 |
December 02 2025 | $917.98 | 2,160,592 | 443,919,000 | $407,508,097,741.50 |
December 01 2025 | $907.95 | 2,087,400 | 443,919,000 | $403,057,454,631.30 |
November 28 2025 | $909.58 | 1,092,450 | 443,919,000 | $403,777,846,384.50 |
November 26 2025 | $904.27 | 1,936,171 | 443,919,000 | $401,422,190,211.00 |
November 25 2025 | $890.40 | 2,534,731 | 443,919,000 | $395,265,566,383.80 |