Zscaler (ZS) Short Interest Ratio & Short Volume $251.95 -0.62 (-0.25%) As of 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Zscaler Short Interest DataZscaler (ZS) has a short interest of 7.74 million shares, representing 8.06% of the float (the number of shares available for trading by the public). This marks a 7.80% increase in short interest from the previous month. The short interest ratio (days to cover) is 3.3, indicating that it would take 3.3 days of the average trading volume of 2.05 million shares to cover all short positions.Current Short Interest7,740,000 sharesPrevious Short Interest7,180,000 sharesChange Vs. Previous Month+7.80%Dollar Volume Sold Short$1.75 billionShort Interest Ratio3.3 Days to CoverLast Record DateApril 30, 2025Outstanding Shares154,725,000 sharesFloat Size96,060,000 sharesShort Percent of Float8.06%Today's Trading Volume1,979,630 sharesAverage Trading Volume2,047,825 sharesToday's Volume Vs. Average97% Short Selling Zscaler? Sign up to receive the latest short interest report for Zscaler and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartZS Short Interest Over TimeZS Days to Cover Over TimeZS Percentage of Float Shorted Over Time Zscaler Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/20257,740,000 shares $1.75 billion +7.8%8.1%3.3 $226.17 4/15/20257,180,000 shares $1.47 billion +2.9%7.5%3.3 $204.64 3/31/20256,980,000 shares $1.38 billion +12.6%7.3%3.3 $198.42 3/15/20256,200,000 shares $1.23 billion +18.8%6.5%3.4 $197.81 2/28/20255,220,000 shares $1.02 billion -11.1%5.5%2.8 $196.23 2/15/20255,870,000 shares $1.25 billion +8.1%6.2%3.3 $212.70 1/31/20255,430,000 shares $1.10 billion +18.8%5.7%3.1 $202.59 1/15/20254,570,000 shares $868.25 million -0.9%4.8%2.7 $189.99 12/31/20244,610,000 shares $831.69 million -4.2%4.9%2.6 $180.41 12/15/20244,810,000 shares $954.98 million +20.6%5.1%2.7 $198.54 Get the Latest News and Ratings for ZS and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Zscaler and its competitors with MarketBeat's FREE daily newsletter. 11/30/20243,990,000 shares $824.29 million +3.9%4.2%2.2 $206.59 11/15/20243,840,000 shares $773.64 million -11.1%4.1%2.1 $201.47 10/31/20244,320,000 shares $781.01 million -10.7%4.6%2.4 $180.79 10/15/20244,840,000 shares $944.57 million -0.2%5.1%2.7 $195.16 9/30/20244,850,000 shares $829.06 million -6.6%5.2%2.6 $170.94 9/15/20245,190,000 shares $882.61 million +25.4%5.6%2.7 $170.06 8/31/20244,140,000 shares $827.92 million -7.4%4.5%2 $199.98 8/15/20244,470,000 shares $850.82 million -0.2%4.8%2.2 $190.34 7/31/20244,480,000 shares $803.49 million +0.5%4.8%2.1 $179.35 7/15/20244,460,000 shares $911.94 million -7.5%4.9%2.1 $204.47 6/30/20244,820,000 shares $926.36 million -5.1%5.3%2.3 $192.19 6/15/20245,080,000 shares $935.84 million +0.8%5.6%2.5 $184.22 5/31/20245,040,000 shares $856.60 million +7.2%5.6%2.5 $169.96 5/15/20244,700,000 shares $851.31 million +11.1%5.2%2.2 $181.13 4/30/20244,230,000 shares $731.54 million -23.2%4.7%1.8 $172.94 4/15/20245,510,000 shares $963.42 million +3.8%6.2%2.4 $174.85 3/31/20245,310,000 shares $1.02 billion +16.5%6.0%2.2 $192.63 3/15/20244,560,000 shares $884.78 million +6.5%5.2%2 $194.03 2/29/20244,280,000 shares $1.04 billion -4.3%4.8%1.8 $241.97 2/15/20244,470,000 shares $1.13 billion -15.5%5.1%2 $253.16 1/31/20245,290,000 shares $1.25 billion +3.9%6.0%2.6 $235.67 1/15/20245,090,000 shares $1.17 billion -2.7%5.8%2.5 $230.77 12/31/20235,230,000 shares $1.16 billion -6.4%6.0%2.6 $221.56 12/15/20235,590,000 shares $1.24 billion -6.4%6.4%2.8 $221.66 11/30/20235,970,000 shares $1.18 billion +0.5%6.8%3.1 $197.53 11/15/20235,940,000 shares $1.10 billion +6.5%6.8%3.3 $184.56 10/31/20235,580,000 shares $885.49 million +9.0%6.4%3.3 $158.69 10/15/20235,120,000 shares $862.82 million +1.4%5.9%2.8 $168.52 9/30/20235,050,000 shares $785.73 million -5.4%5.8%2.4 $155.59 9/15/20235,340,000 shares $833.57 million -7.3%6.3%2.6 $156.10Washington Is Broke—and Eyeing Your Savings Next (Ad)Washington is running out of money…And guess where they'll look next? 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The Department of Justice just admitted that cash isn't legally YOUR property.Get your free guide now by clicking here >> 8/31/20235,760,000 shares $898.85 million -5.9%6.8%2.5 $156.05 8/15/20236,120,000 shares $873.39 million +6.8%7.2%2.5 $142.71 7/31/20235,730,000 shares $918.98 million -14.5%6.7%1.9 $160.38 7/15/20236,700,000 shares $974.38 million -1.9%7.9%2.1 $145.43 6/30/20236,830,000 shares $999.23 million -5.4%8.0%2.3 $146.30 6/15/20237,220,000 shares $1.14 billion +0.8%8.5%2.4 $158.34 5/31/20237,160,000 shares $970.04 million -10.6%8.4%2.3 $135.48 5/15/20238,010,000 shares $967.69 million -4.2%9.5%2.6 $120.81 4/30/20238,360,000 shares $753.24 million +9.9%9.7%2.9 $90.10 4/15/20237,610,000 shares $802.47 million +6.7%8.8%2.9 $105.45 3/31/20237,130,000 shares $833.00 million +0.4%8.3%2.6 $116.83 3/15/20237,100,000 shares $764.46 million +6.0%8.2%2.6 $107.67 2/28/20236,700,000 shares $878.71 million -1.0%7.8%2.4 $131.15 2/15/20236,770,000 shares $966.55 million -22.4%7.9%2.7 $142.77 1/31/20238,720,000 shares $1.08 billion -0.5%10.2%3.3 $124.16 1/15/20238,760,000 shares $939.95 million +9.0%10.2%3.4 $107.30 12/30/20228,040,000 shares $899.68 million +5.8%9.4%3.2 $111.90 12/15/20227,600,000 shares $890.49 million +25.8%8.9%3.1 $117.17 11/30/20226,040,000 shares $806.04 million -2.1%7.2%2.2 $133.45 11/15/20226,170,000 shares $908.59 million -7.6%7.3%2.5 $147.26 10/31/20226,680,000 shares $1.03 billion +6.5%7.9%2.7 $154.10 10/15/20226,270,000 shares $848.39 million -9.4%7.4%2.6 $135.31 9/30/20226,920,000 shares $1.14 billion -1.3%8.2%3 $164.37 9/15/20227,010,000 shares $1.23 billion +16.5%8.4%3 $175.99 8/31/20226,020,000 shares $958.62 million -5.2%7.2%2.7 $159.24 8/15/20226,350,000 shares $1.15 billion +3.6%7.6%2.8 $181.71 7/31/20226,130,000 shares $950.52 million +7.2%7.3%2.4 $155.06 7/15/20225,720,000 shares $854.11 million -2.7%6.9%2.3 $149.32 6/30/20225,880,000 shares $879.12 million -11.3%7.1%2.4 $149.51 6/15/20226,630,000 shares $982.90 million -12.2%8.0%2.7 $148.25 5/31/20227,550,000 shares $1.16 billion +2.3%9.1%3 $153.09 5/15/20227,380,000 shares $1.13 billion +35.7%8.9%2.6 $153.23 4/30/20225,440,000 shares $1.10 billion -2.9%6.6%2.1 $202.74 4/15/20225,600,000 shares $1.29 billion -1.4%6.8%2.1 $230.84 3/31/20225,680,000 shares $1.37 billion +6.8%6.9%2 $241.28 3/15/20225,320,000 shares $1.05 billion -6.2%6.5%1.9 $196.61 2/28/20225,670,000 shares $1.36 billion -4.4%7.0%1.9 $239.15 2/15/20225,930,000 shares $1.69 billion -1.3%7.3%2.1 $285.82 1/31/20226,010,000 shares $1.55 billion -17.6%7.4%2.3 $257.11 1/15/20227,290,000 shares $1.86 billion -8.2%9.0%3 $254.74 12/31/20217,940,000 shares $2.55 billion -4.1%9.8%3.6 $321.33 12/15/20218,280,000 shares $2.54 billion +17.8%10.2%3.8 $307.24 11/30/20217,030,000 shares $2.44 billion -7.1%8.7%3.5 $346.97 11/15/20217,570,000 shares $2.62 billion +5.6%9.5%4.2 $345.80 10/29/20217,170,000 shares $2.29 billion +4.4%9.0%4.3 $318.86 10/15/20216,870,000 shares $2.01 billion +13.7%8.6%4.3 $292.70 9/30/20216,040,000 shares $1.58 billion -4.4%7.6%3.8 $262.22 9/15/20216,320,000 shares $1.73 billion -4.0%8.0%4.1 $273.44 8/31/20216,580,000 shares $1.83 billion +1.7%8.5%4.3 $278.34 8/13/20216,470,000 shares $1.59 billion -2.9%8.3%4 $245.15Collect $7k per month from Tesla’s SECRET dividend (Ad)I just uncovered a strategy that could pay out up to $7,013 every month—without needing a traditional dividend. 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This backdoor is already live—and it could change the way you earn.Start your monthly payout stream today 7/30/20216,660,000 shares $1.57 billion +2.2%8.5%3.8 $235.91 7/15/20216,520,000 shares $1.43 billion -1.7%8.5%3.5 $219.31 6/30/20216,630,000 shares $1.43 billion +0.9%8.6%3.5 $216.06 6/15/20216,570,000 shares $1.36 billion +10.4%8.6%3.4 $207.39 5/28/20215,950,000 shares $1.16 billion +2.8%7.8%3 $194.20 5/14/20215,790,000 shares $931.73 million +11.1%7.5%3 $160.92 4/30/20215,210,000 shares $975.73 million +3.2%6.8%2.7 $187.28 4/15/20215,050,000 shares $971.57 million +15.8%6.6%2.6 $192.39 3/31/20214,360,000 shares $722.84 million -5.6%5.7%2.1 $165.79 3/15/20214,620,000 shares $852.90 million +6.9%6.1%2.1 $184.61 2/26/20214,320,000 shares $845.81 million -6.1%5.8%1.7 $195.79 2/12/20214,600,000 shares $1.03 billion +9.0%6.1%2 $222.89 1/29/20214,220,000 shares $870.50 million -21.3%5.6%1.8 $206.28 1/15/20215,360,000 shares $1.12 billion -21.6%7.1%2.2 $209.87 12/31/20206,840,000 shares $1.38 billion +4.1%9.1%2.9 $201.31 12/15/20206,570,000 shares $1.21 billion -11.9%8.8%2.9 $183.45 11/30/20207,460,000 shares $1.12 billion -6.3%10.0%3.2 $149.74 10/30/20207,610,000 shares $1.08 billion +1.5%10.4%3.4 $142.56 10/15/20207,500,000 shares $1.16 billion +1.6%10.2%3.2 $155.09 9/30/20207,380,000 shares $1.04 billion -6.0%10.2%3 $140.69 9/15/20207,850,000 shares $1.04 billion -1.3%10.9%2.9 $132.64 8/31/20207,950,000 shares $1.14 billion +0.6%11.2%2.8 $143.34 8/14/20207,900,000 shares $970.83 million +0.6%11.1%2.3 $122.89 7/31/20207,850,000 shares $1.02 billion +3.0%11.0%2.3 $129.85 7/15/20207,620,000 shares $932.92 million -4.0%10.7%2.2 $122.43 6/30/20207,940,000 shares $836.80 million -5.8%11.3%2.2 $105.39 6/15/20208,430,000 shares $881.10 million -17.9%12.0%2.2 $104.52 5/29/202010,270,000 shares $1.01 billion -1.1%14.6%2.7 $98.09 ZS Short Interest - Frequently Asked Questions What is Zscaler's current short interest? Short interest is the volume of Zscaler shares that have been sold short but have not yet been covered or closed out. As of April 30th, investors have sold 7,740,000 shares of ZS short. 8.06% of Zscaler's shares are currently sold short. Learn More on Zscaler's current short interest. What is a good short interest ratio for Zscaler? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. ZS shares currently have a short interest ratio of 3.0. Learn More on Zscaler's short interest ratio. Which institutional investors are shorting Zscaler? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Zscaler: Jane Street Group LLC, Goldman Sachs Group Inc., Parallax Volatility Advisers L.P., Millennium Management LLC, Cubist Systematic Strategies LLC, Nomura Holdings Inc., Twin Tree Management LP, Sculptor Capital LP, Susquehanna International Group LLP, HAP Trading LLC, BNP Paribas Financial Markets, Eisler Capital Management Ltd., PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Capital Fund Management S.A., Garda Capital Partners LP, Hsbc Holdings PLC, Maven Securities LTD, Arrowpoint Investment Partners Singapore Pte. Ltd., Simplex Trading LLC, Citigroup Inc., Deutsche Bank AG, Jefferies Financial Group Inc., and Jefferies Financial Group Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Zscaler? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 8.06% of Zscaler's floating shares are currently sold short. Is Zscaler's short interest increasing or decreasing? Zscaler saw a increase in short interest during the month of April. As of April 30th, there was short interest totaling 7,740,000 shares, an increase of 7.8% from the previous total of 7,180,000 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. What is Zscaler's float size? Zscaler currently has issued a total of 154,725,000 shares. Some of Zscaler's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Zscaler currently has a public float of 96,060,000 shares. How does Zscaler's short interest compare to its competitors? 8.06% of Zscaler's shares are currently sold short. Here is how the short interest of companies in the industry of "computer software" compare to Zscaler: Shopify Inc. (1.76%), AppLovin Co. (4.78%), CrowdStrike Holdings, Inc. (3.65%), Infosys Limited (2.29%), NetEase, Inc. (0.42%), Snowflake Inc. (2.85%), Atlassian Co. (1.87%), Cloudflare, Inc. (1.76%), Roblox Co. (2.51%), The Trade Desk, Inc. (5.03%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Spotify Technology S.A. ($4.67 billion), Charter Communications, Inc. ($4.58 billion), Capital One Financial Co. ($4.47 billion), The Kroger Co. ($2.56 billion), Reddit, Inc. ($2.23 billion), Rivian Automotive, Inc. ($2.16 billion), Live Nation Entertainment, Inc. ($1.90 billion), SoFi Technologies, Inc. ($1.85 billion), Zscaler, Inc. ($1.75 billion), and Omnicom Group Inc. ($1.75 billion). View all of the most shorted stocks. What does it mean to sell short Zscaler stock? Short selling ZS is an investing strategy that aims to generate trading profit from Zscaler as its price is falling. ZS shares are trading down $0.55 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Zscaler? A short squeeze for Zscaler occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of ZS, which in turn drives the price of the stock up even further. How often is Zscaler's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including ZS, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies SHOP Short Interest APP Short Interest CRWD Short Interest INFY Short Interest NTES Short Interest SNOW Short Interest TEAM Short Interest NET Short Interest RBLX Short Interest TTD Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:ZS) was last updated on 5/20/2025 by MarketBeat.com Staff From Our PartnersEveryone’s watching Nvidia right now. Here’s why I’m excited.So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal...Timothy Sykes | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. By the time he left, it had soared to $1,839. ...Premier Gold Co | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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