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Stock research / United States / ZS / Short interest

Zscaler, Inc. short interest

6.0M shares of Zscaler were sold short at the 15 October 2026 settlement, near the bottom of its range over the last year (5.4M to 12.1M). Short sellers would need 2.1 days of normal trading to buy them back.

Shares sold short6.0Mat 15 Oct 2026
Change on the settlement before+2.6%+11% over a year
Days to cover2.14at 2.8M shares a day
Of shares in issue3.65%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 bottom of its range over the last year (5.4M to 12.1M), and the share price moved -14% 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

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 29 Mar 2018 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20266.0M+2.6%2.8M2.14
    30 September 20265.8M-10.8%3.2M1.80
    15 September 20266.5M+2.3%4.4M1.47
    31 August 20266.4M+2.0%2.2M2.92
    14 August 20266.2M-16.0%2.3M2.74
    31 July 20267.4M-7.8%2.0M3.63
    15 July 20268.0M-2.8%2.8M2.84
    30 June 20268.3M-30.2%4.3M1.93
    15 June 202611.9M-1.6%5.4M2.22
    29 May 202612.1M+8.4%9.8M1.23
    15 May 202611.1M+9.4%3.0M3.66
    30 April 202610.2M-3.2%2.4M4.28
    15 April 202610.5M+28.3%3.3M3.18
    31 March 20268.2M+4.6%2.6M3.12
    13 March 20267.8M+9.4%2.7M2.90
    27 February 20267.2M+0.7%4.2M1.68
    13 February 20267.1M-7.5%2.7M2.64
    30 January 20267.7M+10.8%1.9M4.13
    15 January 20266.9M-1.4%1.7M4.15
    31 December 20257.0M+10.1%1.4M4.90
    15 December 20256.4M+8.5%2.0M3.12
    28 November 20255.9M+6.3%2.7M2.16
    14 November 20255.5M-6.7%1.3M4.23
    31 October 20255.9M+10.5%1.1M5.38
    15 October 20255.4M-5.4%1.4M3.88
    30 September 20255.7M-2.1%1.5M3.90
    15 September 20255.8M+2.5%2.5M2.31
    29 August 20255.7M-5.2%1.1M5.11
    15 August 20256.0M-5.6%1.6M3.70
    31 July 20256.3M+2.3%1.4M4.39
    15 July 20256.2M-14.4%2.1M2.88
    30 June 20257.2M-19.7%2.5M2.90
    13 June 20259.0M+7.0%2.9M3.14
    30 May 20258.4M-3.9%3.2M2.65
    15 May 20258.7M+12.7%2.4M3.64
    30 April 20257.7M+7.9%2.2M3.60
    15 April 20257.2M+2.8%3.3M2.20
    31 March 20257.0M+12.5%1.9M3.64
    14 March 20256.2M+18.9%3.0M2.06
    28 February 20255.2M-11.1%1.7M3.03
    14 February 20255.9M+8.1%1.4M4.09
    31 January 20255.4M+18.8%1.4M3.75
    15 January 20254.6M-0.7%1.5M3.12
    31 December 20244.6M-4.2%1.8M2.56
    13 December 20244.8M+20.5%3.0M1.61
    29 November 20244.0M+3.9%1.4M2.82
    15 November 20243.8M-11.0%1.5M2.53
    31 October 20244.3M-10.7%1.1M3.78
    15 October 20244.8M-0.3%1.9M2.54
    30 September 20244.9M-6.5%1.4M3.51
    13 September 20245.2M+25.2%4.0M1.30
    30 August 20244.1M-7.3%1.2M3.50
    15 August 20244.5M-0.3%1.4M3.14
    31 July 20244.5M+0.5%1.5M3.02
    15 July 20244.5M-7.5%1.9M2.37
    28 June 20244.8M-5.1%2.3M2.11
    14 June 20245.1M+0.7%2.6M1.92
    31 May 20245.0M+7.4%2.9M1.76
    15 May 20244.7M+11.1%1.6M2.87
    30 April 20244.2M-23.3%1.5M2.79
    15 April 20245.5M+3.8%1.6M3.43
    28 March 20245.3M+16.5%1.7M3.16
    15 March 20244.6M+6.4%3.7M1.23
    29 February 20244.3M-4.1%3.5M1.23
    15 February 20244.5M-15.6%2.1M2.17
    31 January 20245.3M+3.9%1.7M3.05
    12 January 20245.1M-2.6%1.7M3.03
    29 December 20235.2M-6.5%1.2M4.42
    15 December 20235.6M-6.4%2.2M2.53
    30 November 20236.0M+0.6%3.5M1.72
    15 November 20235.9M+6.4%1.8M3.32
    31 October 20235.6M+9.0%1.4M3.99
    13 October 20235.1M+1.4%2.0M2.58
    29 September 20235.1M-5.4%1.4M3.65
    15 September 20235.3M-7.3%2.6M2.05
    31 August 20235.8M-5.9%1.4M4.17
    15 August 20236.1M+6.9%1.9M3.26
    31 July 20235.7M-14.4%2.4M2.36
    14 July 20236.7M-1.9%3.1M2.13
    30 June 20236.8M-5.4%1.8M3.74
    15 June 20237.2M+0.8%3.4M2.10
    31 May 20237.2M-10.6%2.6M2.75
    15 May 20238.0M-4.1%4.8M1.67
    28 April 20238.4M+9.8%2.5M3.34
    14 April 20237.6M+6.8%2.7M2.79
    31 March 20237.1M+0.4%2.1M3.38
    15 March 20237.1M+6.1%4.3M1.65
    28 February 20236.7M-1.1%1.9M3.45
    15 February 20236.8M-22.3%2.1M3.21
    31 January 20238.7M-0.4%2.6M3.39
    13 January 20238.8M+8.9%3.0M2.92
    30 December 20228.0M+5.8%1.9M4.19
    15 December 20227.6M+25.9%3.8M2.02
    30 November 20226.0M-2.2%1.8M3.37
    15 November 20226.2M-7.6%2.8M2.17
    31 October 20226.7M+6.5%1.7M3.89
    14 October 20226.3M-9.3%2.6M2.39
    30 September 20226.9M-1.3%2.3M3.06
    15 September 20227.0M+16.5%3.9M1.80
    31 August 20226.0M-5.2%1.7M3.55
    15 August 20226.3M+3.6%2.0M3.18
    29 July 20226.1M+7.1%1.9M3.24
    15 July 20225.7M-2.8%1.9M2.94
    30 June 20225.9M-11.2%2.5M2.38
    15 June 20226.6M-12.1%2.1M3.11
    31 May 20227.5M+2.2%3.6M2.09
    13 May 20227.4M+35.7%2.9M2.52
    29 April 20225.4M-2.8%1.6M3.47
    14 April 20225.6M-1.4%2.1M2.73
    31 March 20225.7M+6.6%2.3M2.46
    15 March 20225.3M-6.1%3.3M1.63
    28 February 20225.7M-4.4%4.5M1.26
    15 February 20225.9M-1.3%2.0M3.02
    31 January 20226.0M-17.5%2.9M2.06
    14 January 20227.3M-8.2%2.7M2.74
    31 December 20217.9M-4.2%2.3M3.46
    15 December 20218.3M+17.9%3.7M2.21
    30 November 20217.0M-7.1%2.0M3.48
    15 November 20217.6M+5.6%1.6M4.64
    29 October 20217.2M+4.3%1.3M5.52
    15 October 20216.9M+13.8%1.6M4.27
    30 September 20216.0M-4.5%2.1M2.93
    15 September 20216.3M-4.0%2.4M2.68
    31 August 20216.6M+1.8%1.3M5.11
    13 August 20216.5M-2.9%1.1M5.88
    30 July 20216.7M+2.2%1.2M5.74
    15 July 20216.5M-1.7%1.6M4.16
    30 June 20216.6M+1.0%1.7M3.94
    15 June 20216.6M+10.4%1.9M3.50
    28 May 20216.0M+2.8%2.7M2.23
    14 May 20215.8M+11.0%1.7M3.32
    30 April 20215.2M+3.2%1.3M3.89
    15 April 20215.1M+16.0%1.6M3.18
    31 March 20214.4M-5.7%1.8M2.38
    15 March 20214.6M+6.8%2.3M2.03
    26 February 20214.3M-6.1%1.8M2.34
    12 February 20214.6M+9.1%1.5M3.10
    29 January 20214.2M-21.4%1.8M2.39
    15 January 20215.4M-21.6%2.1M2.51
    31 December 20206.8M+4.1%2.4M2.85
    15 December 20206.6M-11.9%3.5M1.87
    30 November 20207.5M-6.3%1.5M5.11
    13 November 20208.0M+4.6%1.9M4.13
    30 October 20207.6M+1.5%1.3M5.67
    15 October 20207.5M+1.6%1.9M4.04
    30 September 20207.4M-6.1%2.0M3.66
    15 September 20207.9M-1.2%3.4M2.31
    31 August 20208.0M+0.7%1.8M4.49
    14 August 20207.9M+0.5%1.8M4.46
    31 July 20207.9M+3.1%2.0M3.85
    15 July 20207.6M-4.1%3.0M2.54
    30 June 20207.9M-5.8%3.3M2.41
    15 June 20208.4M-17.9%4.9M1.73
    29 May 202010.3M-1.1%2.1M4.85
    15 May 202010.4M+7.2%2.1M4.89
    30 April 20209.7M+0.6%2.8M3.46
    15 April 20209.6M+2.8%3.1M3.10
    31 March 20209.4M-20.2%3.8M2.44
    13 March 202011.7M-0.6%2.3M5.14
    28 February 202011.8M+3.9%4.2M2.84
    14 February 202011.4M+1.3%1.2M9.72
    31 January 202011.2M-18.4%1.9M5.87
    15 January 202013.8M-2.9%2.5M5.56
    31 December 201914.2M-3.0%1.4M10.09
    13 December 201914.6M+5.4%3.1M4.78
    29 November 201913.9M+4.7%2.8M4.96
    15 November 201913.2M-0.1%1.7M7.89
    31 October 201913.2M+7.6%2.5M5.27
    15 October 201912.3M+4.8%2.3M5.38
    30 September 201911.7M+46.5%4.2M2.80
    13 September 20198.0M+14.2%7.1M1.13
    30 August 20197.0M+11.8%2.6M2.72
    15 August 20196.3M-5.6%1.8M3.43
    31 July 20196.7M-0.9%1.7M3.90
    15 July 20196.7M-6.2%2.1M3.26
    28 June 20197.2M-0.6%3.0M2.39
    14 June 20197.2M-16.6%2.8M2.59
    31 May 20198.6M+18.0%2.7M3.16
    15 May 20197.3M+5.8%2.4M3.06
    30 April 20196.9M-6.9%1.7M4.07
    15 April 20197.4M-0.4%2.4M3.09
    29 March 20197.4M-1.8%2.3M3.26
    15 March 20197.6M+5.5%3.3M2.33
    28 February 20197.2M-4.3%1.8M4.01
    15 February 20197.5M-5.0%1.4M5.41
    31 January 20197.9M-4.7%1.5M5.12
    15 January 20198.3M-9.0%1.3M6.33
    31 December 20189.1M+63.8%2.2M4.14
    14 December 20185.6M+3.5%2.4M2.30
    30 November 20185.4M+4.8%1.5M3.63
    15 November 20185.1M-6.9%1.1M4.53
    31 October 20185.5M+7.2%1.1M5.00
    15 October 20185.1M-8.1%1.5M3.40
    28 September 20185.6M-25.6%1.7M3.36
    14 September 20187.5M-6.3%2.7M2.74
    31 August 20188.0M-3.9%1.6M5.02
    15 August 20188.3M+3.4%658K12.67
    31 July 20188.1M+4.3%1.0M7.80
    13 July 20187.7M+9.4%1.0M7.55
    29 June 20187.1M+55.7%1.9M3.64
    15 June 20184.5M+39.1%2.9M1.55
    31 May 20183.3M+15.9%574K5.68
    15 May 20182.8M+31.1%604K4.67
    30 April 20182.1M+26.2%450K4.78
    13 April 20181.7M+25.2%802K2.12
    29 March 20181.4M4.1M1.00
    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.