Costco Wholesale Corp. short interest
Short interest in Costco Wholesale Corp. was 7.6 million shares at the 31 August 2026 settlement, up 2.9% on the previous settlement, with 4.09 days to cover at an average daily volume of 1.9 million shares, as reported to FINRA.
| Settlement | Shares short | Change | Average daily volume | Days to cover |
|---|---|---|---|---|
| 31 August 2026 | 7,577,940 | +2.9% | 1,851,928 | 4.09 |
| 14 August 2026 | 7,364,782 | -3.8% | 1,682,135 | 4.38 |
| 31 July 2026 | 7,655,966 | +10.0% | 2,042,482 | 3.75 |
| 15 July 2026 | 6,957,664 | -4.5% | 2,532,106 | 2.75 |
| 30 June 2026 | 7,284,892 | -7.1% | 2,985,147 | 2.44 |
| 15 June 2026 | 7,837,886 | -0.5% | 2,171,244 | 3.61 |
| 29 May 2026 | 7,878,688 | +7.1% | 2,944,359 | 2.68 |
| 15 May 2026 | 7,357,205 | +9.4% | 1,844,723 | 3.99 |
| 30 April 2026 | 6,725,461 | +2.7% | 1,648,849 | 4.08 |
| 15 April 2026 | 6,550,081 | +4.0% | 1,917,216 | 3.42 |
| 31 March 2026 | 6,300,039 | +0.1% | 1,628,042 | 3.87 |
| 13 March 2026 | 6,295,610 | -1.5% | 1,952,006 | 3.23 |
FINRA publishes consolidated short interest twice a month, about ten days after each settlement. Days to cover is shares short over average daily volume. Short interest as a share of the float is not shown: the float is not in the public record.
Source
FINRA equity short interest data, the public dataset.
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