COST
Costco Wholesale Corp
stockNASDAQ
Market OpenOct 29, 2026 10:55:49 AM EDT
990.28USD+0.768%(+7.55)271,421
Pre-marketOct 29, 2026 9:28:30 AM EDT
994.57USD+1.205%(+11.84)
As of 2026-10-15, there were 7,600,821 shares short with a short interest of 1.72%.
COST Short Interest - Official
COST Short Position Change - Official
COST Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-10-15 | 1.72 | 7,600,821 | 3.73 | +274,997 | +3.75 | 443,129,349 | 442,238,659 |
| 2026-09-30 | 1.66 | 7,325,824 | 2.74 | -34,750 | -0.47 | 443,266,000 | 440,929,534 |
| 2026-09-15 | 1.67 | 7,360,574 | 3.67 | -217,366 | -2.87 | 443,478,804 | 440,929,534 |
| 2026-08-31 | 1.72 | 7,577,940 | 4.09 | +213,158 | +2.89 | 443,478,804 | 440,929,534 |
| 2026-08-14 | 1.67 | 7,364,782 | 4.38 | -291,184 | -3.80 | 443,478,804 | 440,929,534 |
| 2026-07-31 | 1.74 | 7,655,966 | 3.75 | +698,302 | +10.04 | 443,478,804 | 440,929,534 |
| 2026-07-15 | 1.58 | 6,957,664 | 2.75 | -327,228 | -4.49 | 443,478,804 | 440,911,848 |
| 2026-06-30 | 1.65 | 7,284,892 | 2.44 | -552,994 | -7.06 | 443,478,804 | 440,916,269 |
| 2026-06-15 | 1.77 | 7,837,886 | 3.61 | +480,681 | +6.53 | 443,478,804 | 442,575,189 |
| 2026-05-15 | 1.66 | 7,357,205 | 3.99 | +631,744 | +9.39 | 443,652,540 | 442,721,328 |
| 2026-04-30 | 1.52 | 6,725,461 | 4.08 | +175,380 | +2.68 | 443,652,540 | 442,676,027 |
| 2026-04-15 | 1.48 | 6,550,081 | 3.42 | +250,042 | +3.97 | 443,652,540 | 442,676,027 |
| 2026-03-31 | 1.42 | 6,300,039 | 3.87 | +4,429 | +0.07 | 443,652,540 | 442,676,027 |
| 2026-03-13 | 1.42 | 6,295,610 | 3.23 | -93,178 | -1.46 | 443,692,000 | 442,676,027 |
| 2026-02-27 | 1.44 | 6,388,788 | 3.50 | -613,238 | -8.76 | 443,869,411 | 442,676,027 |
| 2026-02-13 | 1.58 | 7,002,026 | 2.90 | -120,135 | -1.69 | 443,869,411 | 442,676,027 |
| 2026-01-30 | 1.61 | 7,122,161 | 2.75 | -737,121 | -9.38 | 443,869,411 | 442,676,027 |
| 2026-01-15 | 1.78 | 7,859,282 | 2.72 | +402,898 | +5.40 | 443,869,411 | 442,676,027 |
| 2025-12-31 | 1.68 | 7,456,384 | 2.65 | +719,079 | +10.67 | 443,869,411 | 442,676,027 |
| 2025-12-15 | 1.52 | 6,737,305 | 2.29 | -940,869 | -12.25 | 443,919,000 | 442,671,588 |
| 2025-11-28 | 1.74 | 7,678,174 | 2.94 | +458,164 | +6.35 | 443,179,176 | 441,933,843 |
| 2025-11-14 | 1.63 | 7,220,010 | 2.92 | +285,521 | +4.12 | 443,179,176 | 441,920,547 |
| 2025-10-31 | 1.57 | 6,934,489 | 3.24 | -13,829 | -0.20 | 443,179,176 | 441,920,547 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.