XBiotech (XBIT) Short Interest Ratio & Short Volume $3.15 -0.09 (-2.78%) Closing price 08/15/2025 04:00 PM EasternExtended Trading$3.16 +0.00 (+0.16%) As of 08/15/2025 04:10 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisChartCompetitorsEarningsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock XBiotech Short Interest DataXBiotech (XBIT) has a short interest of 422,200 shares, representing 2.17% of the float (the number of shares available for trading by the public). This marks a -18.19% decrease in short interest from the previous month. The short interest ratio (days to cover) is 4.9, indicating that it would take 4.9 days of the average trading volume of 43,065 shares to cover all short positions.Current Short Interest422,200 sharesPrevious Short Interest516,100 sharesChange Vs. Previous Month-18.19%Dollar Volume Sold Short$1.22 millionShort Interest Ratio4.9 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares30,490,000 sharesFloat Size19,500,000 sharesShort Percent of Float2.17%Today's Trading Volume38,158 sharesAverage Trading Volume43,065 sharesToday's Volume Vs. Average89% Short Selling XBiotech? Sign up to receive the latest short interest report for XBiotech and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartXBIT Short Interest Over TimeXBIT Days to Cover Over TimeXBIT Percentage of Float Shorted Over Time XBiotech Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/2025422,200 shares $1.22 million -18.2%2.2%4.9 $2.90 7/15/2025516,100 shares $1.42 million +452.0%2.7%5.5 $2.75 6/30/202593,500 shares $277.70 thousand -90.6%7.5%1.5 $2.97 6/15/2025996,000 shares $2.63 million +28.4%5.1%17.9 $2.64 5/31/2025775,500 shares $2.20 million -3.8%4.0%15.1 $2.84 5/15/2025806,100 shares $2.40 million -10.3%4.1%15.6 $2.98 4/30/2025898,600 shares $2.73 million +28.8%4.6%16.2 $3.04 4/15/2025697,600 shares $2.22 million -9.9%3.6%13.2 $3.18 3/31/2025773,900 shares $2.51 million -3.3%4.0%14.6 $3.24 3/15/2025800,100 shares $2.65 million -23.1%4.1%12.6 $3.31 Get the Latest News and Ratings for XBIT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for XBiotech and its competitors with MarketBeat's FREE daily newsletter. 2/28/20251,040,000 shares $3.66 million +13.9%5.3%15.1 $3.52 2/15/2025912,900 shares $2.99 million +0.6%4.7%13.1 $3.27 1/31/2025907,400 shares $3.14 million +15.2%4.7%12.7 $3.46 1/15/2025787,900 shares $3.06 million +2.2%4.0%11.5 $3.89 12/31/2024770,700 shares $3.04 million -0.6%3.9%11.7 $3.95 12/15/2024775,200 shares $5.39 million -3.6%3.9%13.1 $6.95 11/30/2024803,800 shares $6.12 million -5.3%4.1%16.2 $7.61 11/15/2024848,300 shares $5.65 million No Change4.3%17.9 $6.66 10/31/2024848,300 shares $6.16 million -6.3%4.3%17.7 $7.26 10/15/2024904,900 shares $6.74 million -2.2%4.6%18.4 $7.45 9/30/2024925,400 shares $7.15 million +6.9%4.7%15.6 $7.73 9/15/2024865,600 shares $6.11 million +1.6%4.4%7.9 $7.06 8/31/2024852,300 shares $5.45 million -5.8%4.3%6.9 $6.40 8/15/2024904,500 shares $5.76 million -3.6%4.6%7 $6.37 7/31/2024937,800 shares $7.24 million -0.9%4.8%7.3 $7.72 7/15/2024946,100 shares $5.95 million +68.0%4.8%7.2 $6.29 6/30/2024563,100 shares $2.89 million -14.3%2.9%4.2 $5.14 6/15/2024657,300 shares $4.01 million -0.8%3.3%6.7 $6.10 5/31/2024662,500 shares $4.80 million -0.9%3.4%8.3 $7.25 5/15/2024668,500 shares $5.74 million -5.8%3.7%9.1 $8.59 4/30/2024709,900 shares $5.44 million +5.9%3.9%9.1 $7.67 4/15/2024670,600 shares $6.31 million +10.9%3.4%9.4 $9.41 3/31/2024604,500 shares $4.91 million +3.3%3.1%10 $8.13 3/15/2024585,300 shares $3.46 million +8.9%3.0%12.8 $5.91 2/29/2024537,500 shares $3.36 million +35.4%2.7%14.6 $6.26 2/15/2024397,000 shares $2.29 million +5.4%2.0%12.1 $5.78 1/31/2024376,500 shares $1.73 million +9.6%1.9%15.5 $4.59 1/15/2024343,500 shares $1.72 million +1.2%1.7%16.8 $5.00 12/31/2023339,400 shares $1.36 million -0.6%1.7%18.9 $4.00 12/15/2023341,500 shares $1.59 million -0.2%1.7%19 $4.65When the levee breaks (Ad)The U.S. Treasury just confirmed it plans to borrow $1.01 trillion this quarter—nearly double what was projected. According to Porter Stansberry, this is panic-level borrowing… and a clear sign we’re nearing America’s financial breaking point. In his latest emergency briefing, Porter outlines why the cracks in our system are widening fast—and how Trump’s policies may be accelerating the collapse. More importantly, he reveals three moves you can make now to protect and potentially grow your wealth before the levee breaks.Click here to watch the urgent broadcast and get ahead of what’s coming. 11/30/2023342,300 shares $1.34 million +9.5%1.8%21.1 $3.92 11/15/2023312,500 shares $1.19 million +6.1%1.7%17.2 $3.80 10/31/2023294,500 shares $1.23 million -1.3%1.6%16.5 $4.18 10/15/2023298,500 shares $1.17 million +7.7%1.6%17.5 $3.93 9/30/2023277,200 shares $1.14 million +9.0%1.5%15.5 $4.12 9/15/2023254,400 shares $1.16 million +72.4%1.4%11.9 $4.55 8/31/2023147,600 shares $726.19 thousand -11.9%0.8%5 $4.92 8/15/2023167,600 shares $812.86 thousand +9.9%0.9%3.5 $4.85 7/31/2023152,500 shares $767.08 thousand -5.8%0.8%1.8 $5.03 7/15/2023161,900 shares $841.88 thousand -0.6%0.9%1.8 $5.20 6/30/2023162,800 shares $967.03 thousand +4.6%0.9%1.8 $5.94 6/15/2023155,600 shares $955.38 thousand +79.1%0.8%1.7 $6.14 5/31/202386,900 shares $442.76 thousand +3.7%0.5%1.1 $5.10 5/15/202383,800 shares $279.89 thousand +23.1%0.5%1.2 $3.34 4/30/202368,100 shares $234.26 thousand -5.0%0.4%2.3 $3.44 4/15/202371,700 shares $255.25 thousand -10.0%0.4%2.4 $3.56 3/31/202379,700 shares $274.97 thousand +12.7%0.5%2.5 $3.45 3/15/202370,700 shares $238.97 thousand -15.0%0.4%2 $3.38 2/28/202383,200 shares $279.55 thousand +22.5%0.5%2.1 $3.36 2/15/202367,900 shares $249.19 thousand -6.1%0.4%1.7 $3.67 1/31/202372,300 shares $314.51 thousand -9.7%0.4%1.9 $4.35 1/15/202380,100 shares $373.27 thousand +0.8%0.5%2.1 $4.66 12/30/202279,500 shares $279.05 thousand -22.1%0.5%2.1 $3.51 12/15/2022102,000 shares $332.52 thousand -27.2%0.6%2.8 $3.26 11/30/2022140,100 shares $453.92 thousand +16.9%0.9%3.9 $3.24 11/15/2022119,800 shares $433.68 thousand +24.7%0.8%3 $3.62 10/31/202296,100 shares $337.31 thousand +42.4%0.6%2.2 $3.51 10/15/202267,500 shares $247.05 thousand -11.0%0.4%1.4 $3.66 9/30/202275,800 shares $274.40 thousand +9.9%0.5%1.6 $3.62 9/15/202269,000 shares $280.83 thousand -22.2%0.4%0.8 $4.07 8/31/202288,700 shares $355.69 thousand +9.1%0.6%0.9 $4.01 8/15/202281,300 shares $413.82 thousand +89.5%0.5%0.7 $5.09 7/31/202242,900 shares $221.79 thousand -15.6%0.3%0.3 $5.17 7/15/202250,800 shares $265.18 thousand -21.0%0.3%0.4 $5.22 6/30/202264,300 shares $362.01 thousand -89.1%0.4%0.5 $5.63 6/15/2022589,100 shares $3.33 million +1.9%3.9%4.2 $5.66 5/31/2022578,100 shares $3.18 million -6.6%3.8%5.8 $5.50 5/15/2022619,000 shares $3.56 million +13.2%4.1%6.9 $5.75 4/30/2022546,900 shares $4.24 million +15.5%3.6%7.1 $7.76 4/15/2022473,600 shares $3.95 million -19.2%3.1%7.7 $8.33 3/31/2022585,900 shares $5.06 million +1.6%3.9%10.1 $8.64 3/15/2022576,800 shares $5.20 million +7.4%3.8%10.4 $9.01 2/28/2022536,900 shares $5.29 million -6.9%3.6%8.5 $9.86 2/15/2022576,400 shares $5.90 million +2.8%3.8%9 $10.23 1/31/2022560,800 shares $6.04 million +0.9%3.4%8.4 $10.77 1/15/2022556,100 shares $6.45 million -4.8%3.3%8.3 $11.60 12/31/2021584,100 shares $6.50 million -13.0%N/A8.5 $11.13 12/15/2021671,100 shares $7.62 million -2.1%3.6%8.7 $11.35 11/30/2021685,200 shares $8.65 million -3.2%3.7%9.9 $12.62 11/15/2021708,000 shares $9.61 million -1.5%3.8%11 $13.57When the levee breaks (Ad)The U.S. Treasury just confirmed it plans to borrow $1.01 trillion this quarter—nearly double what was projected. According to Porter Stansberry, this is panic-level borrowing… and a clear sign we’re nearing America’s financial breaking point. In his latest emergency briefing, Porter outlines why the cracks in our system are widening fast—and how Trump’s policies may be accelerating the collapse. More importantly, he reveals three moves you can make now to protect and potentially grow your wealth before the levee breaks.Click here to watch the urgent broadcast and get ahead of what’s coming. 10/29/2021719,000 shares $10.54 million -0.2%3.8%12.1 $14.66 10/15/2021720,600 shares $9.52 million -0.2%3.9%12.6 $13.21 9/30/2021721,700 shares $9.35 million -4.2%3.9%9.7 $12.95 9/15/2021753,100 shares $11.88 million -1.1%4.1%9.6 $15.77 8/31/2021761,400 shares $12.16 million +3.2%4.2%9.2 $15.97 8/13/2021737,900 shares $11.78 million -2.5%4.1%8.4 $15.96 7/30/2021756,400 shares $12.25 million -8.3%4.2%8.5 $16.20 7/15/2021825,200 shares $13.67 million -8.0%4.6%8.9 $16.57 6/30/2021897,300 shares $14.86 million -14.5%5.0%11.4 $16.56 6/15/20211,050,000 shares $17.08 million -10.3%5.9%15.4 $16.27 5/28/20211,170,000 shares $20.18 million -6.4%6.6%17.9 $17.25 5/14/20211,250,000 shares $21.40 million -5.3%7.1%18.2 $17.12 4/30/20211,320,000 shares $23.52 million -6.4%7.5%16.9 $17.82 4/15/20211,410,000 shares $23.81 million -1.4%8.2%14.7 $16.89 3/31/20211,430,000 shares $24.24 million No Change8.3%13.2 $16.95 3/15/20211,430,000 shares $28.54 million -4.7%8.1%12.7 $19.96 2/26/20211,500,000 shares $28.41 million -3.2%8.5%14 $18.94 2/12/20211,550,000 shares $31.12 million -4.3%8.8%13.6 $20.08 1/29/20211,620,000 shares $29.34 million -1.2%9.2%14.8 $18.11 1/15/20211,640,000 shares $27.70 million -0.6%9.3%15.9 $16.89 12/31/20201,650,000 shares $26.30 million -2.9%9.4%18.8 $15.94 12/15/20201,700,000 shares $32.18 million No Change10.3%19.6 $18.93 11/30/20201,700,000 shares $32.96 million +0.6%11.2%16.6 $19.39 10/30/20201,820,000 shares $31.78 million -1.1%12.6%12 $17.46 10/15/20201,840,000 shares $35.75 million +4.0%12.7%11.3 $19.43 9/30/20201,770,000 shares $33.79 million -11.5%12.2%9.2 $19.09 9/15/20202,000,000 shares $39.66 million -2.0%14.3%9.7 $19.83 8/31/20202,040,000 shares $38.60 million +9.7%14.6%10.2 $18.92 XBIT Short Interest - Frequently Asked Questions What is XBiotech's current short interest? Short interest is the volume of XBiotech shares that have been sold short but have not yet been closed out or covered. As of July 31st, traders have sold 422,200 shares of XBIT short. 2.17% of XBiotech's shares are currently sold short. Learn More on XBiotech's current short interest. What is a good short interest ratio for XBiotech? 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. XBIT shares currently have a short interest ratio of 5.0. Learn More on XBiotech's short interest ratio. What is a good short interest percentage for XBiotech? 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. 2.17% of XBiotech's floating shares are currently sold short. Is XBiotech's short interest increasing or decreasing? XBiotech saw a decrease in short interest during the month of July. As of July 31st, there was short interest totaling 422,200 shares, a decrease of 18.2% from the previous total of 516,100 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 XBiotech's float size? XBiotech currently has issued a total of 30,488,000 shares. Some of XBiotech'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. XBiotech currently has a public float of 19,500,000 shares. How does XBiotech's short interest compare to its competitors? 2.17% of XBiotech's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to XBiotech: Astria Therapeutics, Inc. (6.41%), Nanobiotix S.A. Sponsored ADR (0.04%), Fulcrum Therapeutics, Inc. (9.98%), Inventiva S.A. Sponsored ADR (0.02%), Tonix Pharmaceuticals Holding Corp. (16.46%), Aura Biosciences, Inc. (5.93%), Arcturus Therapeutics Holdings Inc. (17.60%), Corvus Pharmaceuticals, Inc. (16.50%), Abeona Therapeutics Inc. (18.51%), Olema Pharmaceuticals, Inc. (13.35%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), MicroStrategy Incorporated ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short XBiotech stock? Short selling XBIT is an investing strategy that aims to generate trading profit from XBiotech as its price is falling. XBIT shares are trading down $0.09 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 XBiotech? A short squeeze for XBiotech occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of XBIT, which in turn drives the price of the stock up even further. How often is XBiotech'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 XBIT, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies Astria Therapeutics Short Interest Data Nanobiotix Short Interest Data Fulcrum Therapeutics Short Interest Data Inventiva Short Interest Data Tonix Pharmaceuticals Short Interest Data Aura Biosciences Short Interest Data Arcturus Therapeutics Short Interest Data Corvus Pharmaceuticals Short Interest Data Abeona Therapeutics Short Interest Data Olema Pharmaceuticals Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:XBIT) was last updated on 8/16/2025 by MarketBeat.com Staff From Our PartnersWhen the levee breaksThe U.S. Treasury just confirmed it plans to borrow $1.01 trillion this quarter—nearly double what was project...Porter & Company | SponsoredIs Elon's empire crumbling?The Tesla Shock Nobody Sees Coming While headlines scream "Tesla is doomed"... 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Exploding U.S. de...Investors Alley | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding XBiotech Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share XBiotech With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. 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