Costco Wholesale Corp historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2011-10-12 | 81.510 | 82.500 | 81.210 | 81.420 | 58.820 | 2,453,913 |
| 2011-10-11 | 80.980 | 81.060 | 80.250 | 80.900 | 58.444 | 1,983,734 |
| 2011-10-10 | 80.000 | 81.320 | 79.850 | 81.230 | 58.682 | 2,324,346 |
| 2011-10-07 | 79.310 | 79.686 | 78.720 | 79.020 | 57.086 | 3,353,682 |
| 2011-10-06 | 79.810 | 80.000 | 78.410 | 79.200 | 57.216 | 4,214,790 |
| 2011-10-05 | 80.990 | 81.780 | 78.620 | 80.250 | 57.974 | 5,043,721 |
| 2011-10-04 | 80.670 | 81.780 | 78.610 | 81.650 | 58.986 | 4,718,380 |
| 2011-10-03 | 81.720 | 83.220 | 81.180 | 81.630 | 58.971 | 3,235,208 |
| 2011-09-30 | 82.380 | 83.680 | 82.020 | 82.130 | 59.332 | 2,765,190 |
| 2011-09-29 | 84.980 | 85.270 | 81.990 | 82.980 | 59.946 | 2,434,146 |
| 2011-09-28 | 84.590 | 85.300 | 83.770 | 83.790 | 60.532 | 2,140,953 |
| 2011-09-27 | 85.610 | 85.940 | 83.950 | 84.330 | 60.922 | 2,495,148 |
| 2011-09-26 | 83.800 | 84.750 | 83.360 | 84.450 | 61.008 | 3,124,974 |
| 2011-09-23 | 82.700 | 83.900 | 82.470 | 83.370 | 60.228 | 2,827,358 |
| 2011-09-22 | 82.730 | 83.780 | 81.730 | 83.185 | 60.095 | 4,550,133 |
| 2011-09-21 | 85.070 | 86.180 | 84.390 | 84.430 | 60.994 | 2,639,441 |
| 2011-09-20 | 85.150 | 86.340 | 84.700 | 85.070 | 61.456 | 3,318,244 |
| 2011-09-19 | 83.540 | 85.340 | 83.420 | 85.030 | 61.427 | 2,567,937 |
| 2011-09-16 | 83.260 | 84.960 | 82.960 | 84.240 | 60.857 | 4,399,478 |
| 2011-09-15 | 82.890 | 83.290 | 82.103 | 83.010 | 59.968 | 2,440,241 |
| 2011-09-14 | 80.940 | 82.520 | 79.930 | 81.900 | 59.166 | 2,738,259 |
| 2011-09-13 | 80.070 | 80.790 | 79.300 | 80.710 | 58.307 | 2,353,534 |
| 2011-09-12 | 78.030 | 79.880 | 78.020 | 79.720 | 57.591 | 2,215,758 |
| 2011-09-09 | 79.950 | 80.083 | 78.500 | 78.900 | 56.999 | 2,494,302 |
| 2011-09-08 | 80.285 | 81.470 | 80.170 | 80.760 | 58.343 | 2,340,854 |
| 2011-09-07 | 79.270 | 80.610 | 78.880 | 80.610 | 58.234 | 2,038,368 |
| 2011-09-06 | 77.030 | 78.530 | 76.590 | 78.400 | 56.638 | 2,242,568 |
| 2011-09-02 | 78.230 | 79.680 | 78.080 | 78.560 | 56.753 | 2,459,250 |
| 2011-09-01 | 78.980 | 80.910 | 78.780 | 79.480 | 57.418 | 4,002,220 |
| 2011-08-31 | 78.240 | 79.040 | 78.020 | 78.540 | 56.739 | 2,693,826 |
| 2011-08-30 | 77.600 | 78.540 | 77.220 | 78.070 | 56.399 | 2,241,177 |
| 2011-08-29 | 77.860 | 78.110 | 77.380 | 77.790 | 56.197 | 2,613,671 |
| 2011-08-26 | 75.780 | 77.670 | 75.050 | 77.210 | 55.778 | 2,177,647 |
| 2011-08-25 | 77.770 | 78.520 | 75.770 | 75.860 | 54.803 | 2,079,119 |
| 2011-08-24 | 76.220 | 77.530 | 75.748 | 77.490 | 55.980 | 2,488,057 |
| 2011-08-23 | 74.590 | 76.830 | 74.160 | 76.220 | 55.063 | 3,399,316 |
| 2011-08-22 | 75.970 | 75.990 | 73.730 | 74.420 | 53.763 | 2,455,677 |
| 2011-08-19 | 73.400 | 75.490 | 73.400 | 74.360 | 53.719 | 3,734,344 |
| 2011-08-18 | 74.520 | 75.380 | 72.460 | 74.360 | 53.719 | 4,974,398 |
| 2011-08-17 | 75.620 | 77.400 | 75.326 | 76.120 | 54.991 | 3,584,418 |
| 2011-08-16 | 73.930 | 75.610 | 73.370 | 75.135 | 54.279 | 2,847,500 |
| 2011-08-15 | 73.170 | 74.080 | 72.680 | 74.080 | 53.517 | 2,615,193 |
| 2011-08-12 | 73.020 | 73.410 | 71.700 | 72.790 | 52.585 | 3,012,704 |
| 2011-08-11 | 70.600 | 73.390 | 70.310 | 72.610 | 52.455 | 4,324,250 |
| 2011-08-10 | 72.970 | 73.140 | 70.220 | 70.390 | 50.851 | 4,919,281 |
| 2011-08-09 | 71.620 | 74.660 | 70.710 | 74.660 | 53.936 | 5,715,005 |
| 2011-08-08 | 75.600 | 76.470 | 70.460 | 70.620 | 51.017 | 8,418,290 |
| 2011-08-05 | 77.450 | 77.530 | 74.781 | 76.740 | 55.439 | 3,586,986 |
| 2011-08-04 | 76.110 | 78.280 | 75.800 | 76.510 | 55.272 | 5,801,976 |
| 2011-08-03 | 75.930 | 77.300 | 75.110 | 77.080 | 55.684 | 3,809,366 |
| 2011-08-02 | 77.300 | 77.750 | 75.770 | 75.830 | 54.608 | 3,445,385 |
| 2011-08-01 | 79.320 | 79.350 | 77.060 | 77.705 | 55.958 | 2,554,319 |
| 2011-07-29 | 77.500 | 78.919 | 77.190 | 78.250 | 56.351 | 2,435,213 |
| 2011-07-28 | 78.390 | 79.320 | 78.250 | 78.330 | 56.408 | 1,985,591 |
| 2011-07-27 | 80.060 | 80.290 | 78.330 | 78.390 | 56.451 | 2,309,150 |
| 2011-07-26 | 80.960 | 81.570 | 80.420 | 80.550 | 58.007 | 1,127,461 |
| 2011-07-25 | 81.200 | 81.590 | 81.060 | 81.160 | 58.446 | 1,174,188 |
| 2011-07-22 | 81.670 | 81.830 | 81.150 | 81.670 | 58.813 | 991,464 |
| 2011-07-21 | 80.870 | 82.120 | 80.670 | 81.520 | 58.705 | 1,729,544 |
| 2011-07-20 | 80.820 | 80.880 | 79.850 | 80.690 | 58.108 | 1,562,397 |
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.