Costco Wholesale Corp historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2017-09-27 | 164.49 | 165.32 | 163.38 | 164.42 | 146.23 | 2,053,131 |
| 2017-09-26 | 162.71 | 164.73 | 162.59 | 164.07 | 145.92 | 2,370,441 |
| 2017-09-25 | 160.83 | 162.70 | 160.52 | 162.33 | 144.37 | 1,799,953 |
| 2017-09-22 | 160.90 | 162.00 | 160.37 | 161.29 | 143.45 | 1,535,895 |
| 2017-09-21 | 162.93 | 162.93 | 160.40 | 161.48 | 143.62 | 1,738,809 |
| 2017-09-20 | 161.51 | 163.04 | 161.26 | 162.85 | 144.84 | 2,432,302 |
| 2017-09-19 | 160.96 | 161.66 | 159.95 | 161.56 | 143.69 | 1,790,775 |
| 2017-09-18 | 162.18 | 163.46 | 160.76 | 160.91 | 143.11 | 2,047,121 |
| 2017-09-15 | 162.24 | 162.67 | 161.70 | 162.30 | 144.35 | 3,757,799 |
| 2017-09-14 | 162.68 | 162.68 | 161.64 | 162.37 | 144.41 | 2,493,321 |
| 2017-09-13 | 160.14 | 163.95 | 160.01 | 162.99 | 144.96 | 4,202,017 |
| 2017-09-12 | 157.67 | 160.65 | 157.45 | 160.04 | 142.34 | 2,988,434 |
| 2017-09-11 | 157.89 | 158.00 | 157.06 | 157.36 | 139.95 | 2,442,453 |
| 2017-09-08 | 158.37 | 158.50 | 155.03 | 157.31 | 139.91 | 3,364,570 |
| 2017-09-07 | 158.97 | 159.60 | 157.57 | 159.28 | 141.66 | 2,479,292 |
| 2017-09-06 | 159.19 | 159.94 | 158.09 | 158.86 | 141.29 | 2,873,710 |
| 2017-09-05 | 157.96 | 159.72 | 157.47 | 159.14 | 141.54 | 3,414,549 |
| 2017-09-01 | 157.59 | 158.55 | 157.20 | 158.24 | 140.74 | 2,833,724 |
| 2017-08-31 | 156.22 | 157.26 | 153.95 | 156.74 | 139.40 | 4,567,709 |
| 2017-08-30 | 153.71 | 154.74 | 152.88 | 154.44 | 137.36 | 2,493,492 |
| 2017-08-29 | 152.38 | 153.99 | 151.46 | 153.56 | 136.57 | 2,446,201 |
| 2017-08-28 | 151.90 | 153.28 | 151.20 | 152.55 | 135.68 | 3,776,438 |
| 2017-08-25 | 152.37 | 152.94 | 150.06 | 152.45 | 135.59 | 5,703,470 |
| 2017-08-24 | 160.00 | 160.66 | 151.09 | 151.33 | 134.59 | 10,301,700 |
| 2017-08-23 | 158.62 | 159.44 | 157.78 | 159.37 | 141.74 | 1,731,439 |
| 2017-08-22 | 157.53 | 159.45 | 157.53 | 158.70 | 141.15 | 2,204,553 |
| 2017-08-21 | 157.19 | 158.17 | 155.96 | 157.07 | 139.70 | 1,857,308 |
| 2017-08-18 | 157.98 | 158.69 | 156.92 | 157.08 | 139.71 | 2,747,925 |
| 2017-08-17 | 158.48 | 159.95 | 157.64 | 158.57 | 141.03 | 2,649,982 |
| 2017-08-16 | 157.28 | 159.88 | 157.11 | 159.76 | 142.09 | 3,381,849 |
| 2017-08-15 | 158.00 | 158.38 | 156.79 | 156.88 | 139.08 | 1,869,104 |
| 2017-08-14 | 157.59 | 158.20 | 156.54 | 157.91 | 140.00 | 2,028,894 |
| 2017-08-11 | 156.51 | 157.80 | 156.41 | 156.65 | 138.88 | 1,886,996 |
| 2017-08-10 | 156.17 | 157.57 | 155.37 | 156.64 | 138.87 | 2,764,579 |
| 2017-08-09 | 157.14 | 157.57 | 156.20 | 156.86 | 139.07 | 2,157,557 |
| 2017-08-08 | 157.10 | 159.44 | 157.03 | 157.75 | 139.85 | 2,569,248 |
| 2017-08-07 | 156.50 | 157.58 | 155.34 | 156.95 | 139.14 | 2,629,519 |
| 2017-08-04 | 158.34 | 158.44 | 155.83 | 156.44 | 138.69 | 3,117,944 |
| 2017-08-03 | 161.61 | 162.35 | 157.06 | 157.91 | 140.00 | 5,562,577 |
| 2017-08-02 | 159.13 | 161.55 | 158.44 | 161.28 | 142.98 | 5,486,333 |
| 2017-08-01 | 159.10 | 159.97 | 157.91 | 159.72 | 141.60 | 4,787,491 |
| 2017-07-31 | 153.08 | 158.66 | 153.03 | 158.51 | 140.53 | 6,937,092 |
| 2017-07-28 | 152.67 | 153.30 | 152.11 | 152.89 | 135.55 | 2,779,452 |
| 2017-07-27 | 152.01 | 152.99 | 151.44 | 152.52 | 135.22 | 3,637,864 |
| 2017-07-26 | 153.41 | 153.50 | 151.55 | 152.09 | 134.84 | 3,017,166 |
| 2017-07-25 | 151.41 | 153.70 | 151.40 | 153.17 | 135.79 | 4,605,705 |
| 2017-07-24 | 150.45 | 151.47 | 150.11 | 151.00 | 133.87 | 3,655,550 |
| 2017-07-21 | 150.94 | 151.23 | 150.00 | 150.44 | 133.37 | 4,078,020 |
| 2017-07-20 | 151.47 | 152.19 | 150.88 | 150.99 | 133.86 | 3,207,388 |
| 2017-07-19 | 151.81 | 152.16 | 150.90 | 151.24 | 134.08 | 4,099,995 |
| 2017-07-18 | 152.61 | 152.84 | 150.94 | 151.50 | 134.31 | 3,256,881 |
| 2017-07-17 | 153.00 | 153.44 | 152.52 | 152.84 | 135.50 | 3,096,922 |
| 2017-07-14 | 154.26 | 154.27 | 152.90 | 153.00 | 135.64 | 4,368,387 |
| 2017-07-13 | 153.23 | 153.93 | 152.62 | 153.60 | 136.17 | 5,673,513 |
| 2017-07-12 | 151.46 | 152.90 | 151.42 | 151.75 | 134.53 | 5,112,183 |
| 2017-07-11 | 151.45 | 153.09 | 150.93 | 151.11 | 133.97 | 6,275,636 |
| 2017-07-10 | 153.51 | 153.60 | 150.96 | 151.00 | 133.87 | 8,999,843 |
| 2017-07-07 | 157.36 | 157.55 | 154.09 | 154.11 | 136.63 | 7,688,368 |
| 2017-07-06 | 161.11 | 161.35 | 157.05 | 157.09 | 139.27 | 6,963,416 |
| 2017-07-05 | 158.93 | 159.50 | 157.86 | 158.02 | 140.09 | 3,770,401 |
Stock splits
| Date | Split (new : old) |
|---|
| 2000-01-14 | 2:1 |
| 1993-10-22 | 2:1 |
Dividends
| Ex-date | Amount |
|---|
| 2026-07-24 | 1.4700 USD |
| 2026-05-01 | 1.4700 USD |
| 2026-01-30 | 1.3000 USD |
| 2025-10-31 | 1.3000 USD |
| 2025-08-01 | 1.3000 USD |
| 2025-05-02 | 1.3000 USD |
| 2025-02-07 | 1.1600 USD |
| 2024-11-01 | 1.1600 USD |
| 2024-07-26 | 1.1600 USD |
| 2024-04-25 | 1.1600 USD |
| 2024-02-01 | 1.0200 USD |
| 2023-12-27 | 15.0000 USD |
| 2023-11-02 | 1.0200 USD |
| 2023-08-24 | 1.0200 USD |
| 2023-05-04 | 1.0200 USD |
| 2023-02-02 | 0.9000 USD |
| 2022-10-27 | 0.9000 USD |
| 2022-07-28 | 0.9000 USD |
| 2022-04-28 | 0.9000 USD |
| 2022-02-03 | 0.7900 USD |
| 2021-10-28 | 0.7900 USD |
| 2021-07-29 | 0.7900 USD |
| 2021-04-29 | 0.7900 USD |
| 2021-02-04 | 0.7000 USD |
| 2020-12-01 | 10.0000 USD |
| 2020-10-29 | 0.7000 USD |
| 2020-07-30 | 0.7000 USD |
| 2020-04-30 | 0.7000 USD |
| 2020-02-06 | 0.6500 USD |
| 2019-10-31 | 0.6500 USD |
| 2019-08-29 | 0.6500 USD |
| 2019-05-09 | 0.6500 USD |
| 2019-02-07 | 0.5700 USD |
Open, high, low and close are as traded (USD). Adjusted close accounts for splits and dividends. Educational only, not financial advice.