Costco Wholesale Corp historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2009-03-04 | 41.110 | 41.900 | 40.150 | 40.810 | 28.531 | 14,475,930 |
| 2009-03-03 | 41.310 | 41.860 | 40.250 | 40.690 | 28.448 | 8,139,901 |
| 2009-03-02 | 41.710 | 42.860 | 40.720 | 40.840 | 28.552 | 7,625,166 |
| 2009-02-27 | 41.290 | 43.030 | 41.250 | 42.340 | 29.601 | 7,385,812 |
| 2009-02-26 | 42.350 | 42.440 | 41.550 | 41.550 | 29.049 | 4,907,987 |
| 2009-02-25 | 42.220 | 42.790 | 41.320 | 42.000 | 29.363 | 6,932,625 |
| 2009-02-24 | 41.120 | 42.780 | 41.050 | 42.550 | 29.748 | 6,084,766 |
| 2009-02-23 | 42.800 | 43.230 | 41.040 | 41.170 | 28.783 | 6,430,125 |
| 2009-02-20 | 42.530 | 43.290 | 42.100 | 42.760 | 29.895 | 6,996,180 |
| 2009-02-19 | 42.740 | 43.470 | 42.590 | 42.620 | 29.797 | 5,451,385 |
| 2009-02-18 | 42.200 | 42.630 | 41.720 | 42.380 | 29.629 | 6,191,683 |
| 2009-02-17 | 42.150 | 42.742 | 41.900 | 42.120 | 29.447 | 6,194,413 |
| 2009-02-13 | 44.280 | 44.290 | 42.620 | 42.760 | 29.895 | 4,873,028 |
| 2009-02-12 | 43.500 | 44.390 | 42.890 | 44.320 | 30.985 | 6,572,927 |
| 2009-02-11 | 44.170 | 44.460 | 43.080 | 43.540 | 30.440 | 4,778,752 |
| 2009-02-10 | 44.800 | 45.600 | 43.780 | 43.970 | 30.629 | 6,590,377 |
| 2009-02-09 | 44.780 | 45.410 | 44.570 | 45.170 | 31.465 | 5,336,972 |
| 2009-02-06 | 44.100 | 45.480 | 44.000 | 45.210 | 31.493 | 8,262,897 |
| 2009-02-05 | 42.850 | 43.960 | 42.410 | 43.830 | 30.531 | 9,886,073 |
| 2009-02-04 | 42.740 | 43.500 | 41.830 | 42.980 | 29.939 | 20,971,820 |
| 2009-02-03 | 45.470 | 46.180 | 44.870 | 46.120 | 32.127 | 5,326,355 |
| 2009-02-02 | 44.780 | 45.670 | 44.530 | 45.300 | 31.555 | 4,783,594 |
| 2009-01-30 | 46.550 | 46.660 | 44.785 | 45.030 | 31.367 | 6,682,788 |
| 2009-01-29 | 47.990 | 48.000 | 46.340 | 46.450 | 32.356 | 4,706,578 |
| 2009-01-28 | 48.070 | 48.520 | 47.390 | 47.810 | 33.304 | 5,163,366 |
| 2009-01-27 | 47.390 | 48.080 | 47.080 | 47.900 | 33.366 | 4,085,393 |
| 2009-01-26 | 47.480 | 48.030 | 46.940 | 47.350 | 32.983 | 4,092,137 |
| 2009-01-23 | 46.900 | 47.510 | 46.210 | 46.970 | 32.719 | 4,915,746 |
| 2009-01-22 | 47.550 | 47.880 | 46.670 | 47.450 | 33.053 | 6,144,895 |
| 2009-01-21 | 47.260 | 48.040 | 46.580 | 47.900 | 33.366 | 6,242,812 |
| 2009-01-20 | 49.170 | 49.210 | 47.150 | 47.220 | 32.893 | 7,370,273 |
| 2009-01-16 | 49.310 | 49.310 | 47.860 | 48.800 | 33.993 | 6,413,782 |
| 2009-01-15 | 47.520 | 48.940 | 47.250 | 48.470 | 33.764 | 6,015,852 |
| 2009-01-14 | 48.350 | 48.580 | 47.440 | 47.630 | 33.178 | 7,907,051 |
| 2009-01-13 | 49.060 | 50.360 | 48.550 | 48.940 | 34.091 | 6,310,359 |
| 2009-01-12 | 49.590 | 50.130 | 48.920 | 49.430 | 34.432 | 4,812,852 |
| 2009-01-09 | 50.240 | 50.980 | 48.910 | 49.140 | 34.230 | 4,577,101 |
| 2009-01-08 | 49.550 | 51.900 | 49.380 | 50.650 | 35.282 | 7,287,023 |
| 2009-01-07 | 51.000 | 51.350 | 49.690 | 50.120 | 34.913 | 6,869,987 |
| 2009-01-06 | 52.520 | 52.580 | 51.080 | 51.450 | 35.839 | 6,472,868 |
| 2009-01-05 | 53.180 | 53.615 | 51.800 | 52.290 | 36.424 | 5,892,557 |
| 2009-01-02 | 52.440 | 53.500 | 52.050 | 53.350 | 37.163 | 3,687,125 |
| 2008-12-31 | 51.200 | 52.830 | 51.130 | 52.500 | 36.571 | 4,939,549 |
| 2008-12-30 | 50.830 | 51.500 | 50.400 | 51.130 | 35.616 | 2,355,942 |
| 2008-12-29 | 51.350 | 51.820 | 50.580 | 50.830 | 35.407 | 2,413,886 |
| 2008-12-26 | 51.490 | 52.000 | 51.290 | 51.470 | 35.853 | 1,218,121 |
| 2008-12-24 | 51.920 | 52.059 | 51.570 | 51.690 | 36.007 | 1,123,388 |
| 2008-12-23 | 52.370 | 53.330 | 51.250 | 51.470 | 35.853 | 3,533,655 |
| 2008-12-22 | 54.290 | 54.350 | 51.750 | 52.720 | 36.724 | 4,977,855 |
| 2008-12-19 | 54.590 | 55.000 | 53.380 | 53.790 | 37.469 | 6,567,451 |
| 2008-12-18 | 54.370 | 54.740 | 53.600 | 54.150 | 37.720 | 5,055,957 |
| 2008-12-17 | 52.690 | 54.460 | 52.690 | 53.940 | 37.574 | 6,904,387 |
| 2008-12-16 | 53.000 | 53.440 | 52.320 | 53.030 | 36.940 | 8,212,686 |
| 2008-12-15 | 53.290 | 53.400 | 51.540 | 52.740 | 36.738 | 4,868,621 |
| 2008-12-12 | 51.360 | 54.090 | 51.360 | 53.400 | 37.198 | 6,796,348 |
| 2008-12-11 | 52.250 | 53.470 | 50.700 | 52.060 | 36.264 | 10,660,800 |
| 2008-12-10 | 52.860 | 53.970 | 51.890 | 53.690 | 37.400 | 7,261,116 |
| 2008-12-09 | 55.060 | 55.160 | 52.460 | 53.100 | 36.989 | 7,886,901 |
| 2008-12-08 | 55.390 | 56.270 | 54.460 | 55.190 | 38.445 | 7,387,268 |
| 2008-12-05 | 52.170 | 55.890 | 51.860 | 55.580 | 38.716 | 8,656,696 |
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.