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Stock research / United States / COST / Short interest

Costco Wholesale Corp. short interest

7.6M shares of Costco Wholesale were sold short at the 15 October 2026 settlement, near the top of its range over the last year (6.3M to 7.9M). Short sellers would need 3.7 days of normal trading to buy them back.

Shares sold short7.6Mat 15 Oct 2026
Change on the settlement before+3.8%+9% over a year
Days to cover3.73at 2.0M shares a day
Of shares in issue1.71%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is near the top of its range over the last year (6.3M to 7.9M), and the share price moved +10% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

every company on the site

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    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20267.6M+3.8%2.0M3.73
    30 September 20267.3M-0.5%2.7M2.74
    15 September 20267.4M-2.9%2.0M3.67
    31 August 20267.6M+2.9%1.9M4.09
    14 August 20267.4M-3.8%1.7M4.38
    31 July 20267.7M+10.0%2.0M3.75
    15 July 20267.0M-4.5%2.5M2.75
    30 June 20267.3M-7.1%3.0M2.44
    15 June 20267.8M-0.5%2.2M3.61
    29 May 20267.9M+7.1%2.9M2.68
    15 May 20267.4M+9.4%1.8M3.99
    30 April 20266.7M+2.7%1.6M4.08
    15 April 20266.6M+4.0%1.9M3.42
    31 March 20266.3M+0.1%1.6M3.87
    13 March 20266.3M-1.5%2.0M3.23
    27 February 20266.4M-8.8%1.8M3.50
    13 February 20267.0M-1.7%2.4M2.90
    30 January 20267.1M-9.4%2.6M2.75
    15 January 20267.9M+5.4%2.9M2.72
    31 December 20257.5M+10.7%2.8M2.65
    15 December 20256.7M-12.3%2.9M2.29
    28 November 20257.7M+6.3%2.6M2.94
    14 November 20257.2M+4.1%2.5M2.92
    31 October 20256.9M-0.2%2.1M3.24
    15 October 20256.9M+3.9%2.5M2.79
    30 September 20256.7M+2.2%3.0M2.22
    15 September 20256.5M-4.4%1.7M3.74
    29 August 20256.8M+15.8%2.3M2.93
    15 August 20255.9M+6.0%2.2M2.69
    31 July 20255.6M+14.5%2.1M2.63
    15 July 20254.9M-14.4%2.0M2.47
    30 June 20255.7M+10.7%2.1M2.67
    13 June 20255.1M-6.1%2.0M2.51
    30 May 20255.5M-11.4%2.2M2.53
    15 May 20256.2M+2.3%1.9M3.29
    30 April 20256.0M-0.2%2.2M2.75
    15 April 20256.0M+1.7%3.3M1.85
    31 March 20255.9M-13.4%2.2M2.75
    14 March 20256.9M-3.0%3.1M2.19
    28 February 20257.1M+2.1%1.9M3.67
    14 February 20256.9M+17.8%1.9M3.66
    31 January 20255.9M-7.3%1.9M3.04
    15 January 20256.4M-2.8%1.9M3.39
    31 December 20246.5M+1.3%2.2M2.94
    13 December 20246.5M-2.0%2.0M3.28
    29 November 20246.6M+1.6%1.8M3.60
    15 November 20246.5M+8.2%2.0M3.20
    31 October 20246.0M-2.5%1.4M4.13
    15 October 20246.1M-9.9%1.6M3.77
    30 September 20246.8M-4.1%2.3M3.03
    13 September 20247.1M-2.9%1.7M4.15
    30 August 20247.3M+7.1%1.6M4.70
    15 August 20246.8M+4.5%2.0M3.46
    31 July 20246.6M-7.9%1.9M3.44
    15 July 20247.1M-0.6%2.3M3.14
    28 June 20247.2M+9.1%1.9M3.67
    14 June 20246.6M+3.0%1.7M3.94
    31 May 20246.4M-3.6%1.9M3.33
    15 May 20246.6M+7.5%1.7M3.89
    30 April 20246.1M-2.5%1.5M4.01
    15 April 20246.3M-1.0%1.9M3.34
    28 March 20246.4M-5.9%1.6M4.10
    15 March 20246.8M+0.5%3.3M2.07
    29 February 20246.7M+6.4%1.8M3.66
    15 February 20246.3M+10.3%1.8M3.44
    31 January 20245.7M-4.8%2.0M2.84
    12 January 20246.0M-2.2%2.2M2.78
    29 December 20236.2M+7.6%2.7M2.31
    15 December 20235.7M+14.7%2.8M2.08
    30 November 20235.0M-6.0%1.5M3.32
    15 November 20235.3M+20.5%1.8M3.04
    31 October 20234.4M-6.1%1.7M2.64
    13 October 20234.7M+8.4%1.9M2.42
    29 September 20234.3M+6.6%1.9M2.29
    15 September 20234.1M-1.5%1.5M2.76
    31 August 20234.1M+2.3%1.5M2.67
    15 August 20234.0M-2.7%1.2M3.25
    31 July 20234.2M-3.0%1.9M2.17
    14 July 20234.3M+11.0%1.7M2.46
    30 June 20233.9M-6.1%1.6M2.39
    15 June 20234.1M+15.1%1.7M2.39
    31 May 20233.6M+6.1%2.4M1.46
    15 May 20233.4M-3.9%1.5M2.30
    28 April 20233.5M-6.8%1.5M2.29
    14 April 20233.8M+11.6%2.0M1.86
    31 March 20233.4M-4.4%1.8M1.86
    15 March 20233.5M+14.8%2.4M1.44
    28 February 20233.1M+2.7%1.5M1.98
    15 February 20233.0M+0.4%1.7M1.73
    31 January 20233.0M-17.9%1.9M1.58
    13 January 20233.6M-18.3%2.2M1.64
    30 December 20224.4M+5.3%1.9M2.32
    15 December 20224.2M-13.1%3.2M1.31
    30 November 20224.8M+5.0%1.7M2.81
    15 November 20224.6M+1.3%2.1M2.21
    31 October 20224.6M-1.6%2.0M2.29
    14 October 20224.6M+11.0%2.3M2.05
    30 September 20224.2M-2.0%2.7M1.54
    15 September 20224.3M+4.0%1.9M2.19
    31 August 20224.1M-3.2%1.7M2.37
    15 August 20224.2M+11.6%1.9M2.21
    29 July 20223.8M+3.4%2.1M1.80
    15 July 20223.7M-1.8%2.6M1.43
    30 June 20223.7M-9.7%2.4M1.53
    15 June 20224.1M+0.4%2.7M1.54
    31 May 20224.1M+4.5%4.6M1.00
    13 May 20223.9M-12.9%2.9M1.34
    29 April 20224.5M+9.1%2.4M1.92
    14 April 20224.2M+1.2%2.6M1.61
    31 March 20224.1M+0.4%2.3M1.75
    15 March 20224.1M-7.5%2.8M1.44
    28 February 20224.4M-7.1%2.1M2.08
    15 February 20224.8M+5.0%2.2M2.18
    31 January 20224.5M+4.6%3.0M1.52
    14 January 20224.3M-11.3%2.8M1.56
    31 December 20214.9M+8.2%2.2M2.24
    15 December 20214.5M+23.0%3.3M1.37
    30 November 20213.7M-14.0%2.2M1.64
    15 November 20214.3M-3.1%1.8M2.31
    29 October 20214.4M-5.0%1.8M2.47
    15 October 20214.6M-6.4%1.6M2.88
    30 September 20214.9M-5.7%2.2M2.21
    15 September 20215.2M+2.1%1.4M3.65
    31 August 20215.1M+6.7%1.6M3.12
    13 August 20214.8M-7.3%1.6M3.06
    30 July 20215.2M+13.4%1.6M3.22
    15 July 20214.6M+0.2%1.9M2.38
    30 June 20214.6M+7.9%1.9M2.44
    15 June 20214.2M+5.2%1.7M2.50
    28 May 20214.0M-6.0%1.7M2.31
    14 May 20214.3M+10.2%1.9M2.22
    30 April 20213.9M+4.5%1.7M2.35
    15 April 20213.7M-14.1%1.9M1.95
    31 March 20214.3M-3.5%3.1M1.41
    15 March 20214.5M+6.6%4.5M1.01
    26 February 20214.2M-2.7%2.3M1.86
    12 February 20214.3M+19.4%2.0M2.11
    29 January 20213.6M+0.9%2.4M1.54
    15 January 20213.6M-6.8%2.3M1.54
    31 December 20203.9M+19.7%2.1M1.85
    15 December 20203.2M+4.9%2.6M1.24
    30 November 20203.1M+1.4%1.8M1.73
    13 November 20203.0M+15.4%2.1M1.48
    30 October 20202.6M-17.3%1.6M1.66
    15 October 20203.2M+0.5%1.9M1.66
    30 September 20203.2M+12.1%3.2M1.00
    15 September 20202.8M-1.1%2.0M1.44
    31 August 20202.8M-3.8%1.5M1.86
    14 August 20203.0M-10.7%2.0M1.48
    31 July 20203.3M-1.4%1.4M2.31
    15 July 20203.4M-14.3%2.5M1.37
    30 June 20203.9M-2.1%2.2M1.81
    15 June 20204.0M-1.3%3.0M1.34
    29 May 20204.1M-15.1%2.9M1.42
    15 May 20204.8M-11.9%2.3M2.06
    30 April 20205.4M+14.2%2.8M1.96
    15 April 20204.8M-2.1%3.7M1.29
    31 March 20204.9M-11.3%5.3M1.00
    13 March 20205.5M+8.2%5.0M1.10
    28 February 20205.1M+1.7%2.7M1.85
    14 February 20205.0M+16.6%1.8M2.84
    31 January 20204.3M-16.5%1.8M2.31
    15 January 20205.1M-9.3%2.0M2.62
    31 December 20195.6M+9.9%1.9M2.92
    13 December 20195.1M-6.1%1.8M2.89
    29 November 20195.5M-1.7%1.7M3.19
    15 November 20195.6M+7.1%1.6M3.39
    31 October 20195.2M-5.9%1.7M2.98
    15 October 20195.5M+9.7%2.4M2.27
    30 September 20195.0M+7.9%2.1M2.36
    13 September 20194.7M-14.8%2.7M1.74
    30 August 20195.5M+30.9%2.4M2.30
    15 August 20194.2M-10.3%2.2M1.93
    31 July 20194.7M-5.4%1.4M3.22
    15 July 20194.9M+4.7%1.5M3.35
    28 June 20194.7M-2.7%1.7M2.70
    14 June 20194.8M-1.7%1.7M2.87
    31 May 20194.9M+8.0%2.1M2.38
    15 May 20194.6M+4.6%1.5M2.99
    30 April 20194.4M-4.8%1.4M3.11
    15 April 20194.6M-11.0%1.7M2.68
    29 March 20195.2M-8.7%1.6M3.25
    15 March 20195.6M+31.5%3.2M1.77
    28 February 20194.3M-4.0%1.8M2.44
    15 February 20194.5M-11.5%2.1M2.09
    31 January 20195.1M-14.6%2.2M2.28
    15 January 20195.9M+0.4%2.2M2.73
    31 December 20185.9M+0.2%3.3M1.81
    14 December 20185.9M-0.0%3.5M1.66
    30 November 20185.9M+12.8%2.3M2.54
    15 November 20185.2M+0.1%2.2M2.35
    31 October 20185.2M-15.8%2.7M1.94
    15 October 20186.2M+12.1%3.0M2.07
    28 September 20185.5M-7.1%2.1M2.69
    14 September 20185.9M+2.3%2.4M2.50
    31 August 20185.8M-2.0%1.7M3.44
    15 August 20185.9M-0.3%1.9M3.11
    31 July 20186.0M-9.2%1.8M3.32
    13 July 20186.6M+1.2%1.6M4.02
    29 June 20186.5M-9.8%2.0M3.26
    15 June 20187.2M-8.5%2.3M3.17
    31 May 20187.9M-4.1%2.1M3.82
    15 May 20188.2M-0.1%1.9M4.33
    30 April 20188.2M+18.8%1.9M4.25
    13 April 20186.9M-3.3%2.3M3.01
    29 March 20187.1M-1.9%2.5M2.91
    15 March 20187.3M+0.1%3.0M2.43
    28 February 20187.3M-7.5%1.9M3.86
    15 February 20187.9M-3.0%2.6M3.05
    31 January 20188.1M-22.7%2.5M3.21
    12 January 201810.5M+7.6%3.0M3.46
    29 December 20179.7M2.2M4.45
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.