Vir Biotechnology (VIR) Short Interest Ratio & Short Volume $5.42 +0.31 (+5.99%) Closing price 03:59 PM EasternExtended Trading$5.40 -0.02 (-0.28%) As of 04:16 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 AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Vir Biotechnology Short Interest DataVir Biotechnology (VIR) has a short interest of 11.37 million shares, representing 12.76% of the float (the number of shares available for trading by the public). This marks a -1.30% decrease in short interest from the previous month. The short interest ratio (days to cover) is 8.5, indicating that it would take 8.5 days of the average trading volume of 1.35 million shares to cover all short positions.Current Short Interest11,370,000 sharesPrevious Short Interest11,520,000 sharesChange Vs. Previous Month-1.30%Dollar Volume Sold Short$59.35 millionShort Interest Ratio8.5 Days to CoverLast Record DateJune 15, 2025Outstanding Shares138,240,000 sharesFloat Size89,080,000 sharesShort Percent of Float12.76%Today's Trading Volume1,037,803 sharesAverage Trading Volume1,353,049 sharesToday's Volume Vs. Average77% Short Selling Vir Biotechnology? Sign up to receive the latest short interest report for Vir Biotechnology and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartVIR Short Interest Over TimeVIR Days to Cover Over TimeVIR Percentage of Float Shorted Over Time Vir Biotechnology Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/15/202511,370,000 shares $59.35 million -1.3%12.8%8.5 $5.22 5/31/202511,520,000 shares $55.99 million +5.3%12.9%8.5 $4.86 5/15/202510,940,000 shares $49.78 million +6.1%12.3%8.2 $4.55 4/30/202510,310,000 shares $63.10 million +1.4%11.7%8.3 $6.12 4/15/202510,170,000 shares $57.16 million +0.6%11.6%7.9 $5.62 3/31/202510,110,000 shares $65.51 million +28.3%11.6%4.9 $6.48 3/15/20257,880,000 shares $56.34 million +1.4%9.0%3.9 $7.15 2/28/20257,770,000 shares $65.19 million +1.3%8.9%3.8 $8.39 2/15/20257,670,000 shares $74.02 million +0.4%8.7%3.8 $9.65 1/31/20257,640,000 shares $79.46 million -2.8%8.7%3.6 $10.40 Get the Latest News and Ratings for VIR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Vir Biotechnology and its competitors with MarketBeat's FREE daily newsletter. 1/15/20257,860,000 shares $82.53 million +20.0%9.0%3.7 $10.50 12/31/20246,550,000 shares $48.08 million +7.7%7.5%3.4 $7.34 12/15/20246,080,000 shares $45.30 million -1.3%6.9%4.9 $7.45 11/30/20246,160,000 shares $49.03 million +11.8%7.1%5.2 $7.96 11/15/20245,510,000 shares $44.14 million -3.7%6.3%5.3 $8.01 10/31/20245,720,000 shares $42.84 million +3.1%6.4%6.3 $7.49 10/15/20245,550,000 shares $43.01 million -3.1%6.3%7.4 $7.75 9/30/20245,730,000 shares $42.92 million -4.0%6.5%7.2 $7.49 9/15/20245,970,000 shares $48.42 million +1.0%6.8%7.2 $8.11 8/31/20245,910,000 shares $48.82 million +5.0%6.7%6 $8.26 8/15/20245,630,000 shares $48.76 million +13.7%6.4%5.2 $8.66 7/31/20244,950,000 shares $50.29 million +4.2%5.5%4.4 $10.16 7/15/20244,750,000 shares $45.46 million -0.2%5.3%4.1 $9.57 6/30/20244,760,000 shares $42.36 million -30.3%5.3%4.2 $8.90 6/15/20246,830,000 shares $66.59 million +13.5%7.7%6.2 $9.75 5/31/20246,020,000 shares $61.83 million -3.1%6.8%6.1 $10.27 5/15/20246,210,000 shares $62.22 million +5.1%7.0%6.4 $10.02 4/30/20245,910,000 shares $50.00 million +14.8%6.6%5.7 $8.46 4/15/20245,150,000 shares $44.14 million +3.8%5.8%4.8 $8.57 3/31/20244,960,000 shares $50.24 million -8.7%5.6%4.6 $10.13 3/15/20245,430,000 shares $58.43 million +6.9%6.2%5 $10.76 2/29/20245,080,000 shares $57.10 million +0.6%5.8%4.4 $11.24 2/15/20245,050,000 shares $52.07 million -12.5%5.8%4.4 $10.31 1/31/20245,770,000 shares $54.24 million -5.1%6.6%4.9 $9.40 1/15/20246,080,000 shares $63.05 million +2.7%6.9%5.1 $10.37 12/31/20235,920,000 shares $59.56 million -6.0%6.7%4.9 $10.06 12/15/20236,300,000 shares $62.75 million +7.5%7.2%5.1 $9.96 11/30/20235,860,000 shares $55.61 million -4.4%6.7%4.1 $9.49 11/15/20236,130,000 shares $59.34 million No Change7.0%4.3 $9.68 10/31/20236,130,000 shares $48.61 million -4.8%7.0%4.5 $7.93This Signal Only Flashes Once Every 4 Years – And It Just Triggered (Ad)This same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in crypto. Now it’s back, and the smart money is already positioning. A free training reveals the step-by-step strategy and altcoin picks designed to help you capitalize on the next wave.Missed the Last Crypto Boom? Don’t Miss This One - PLUS Claim your $10 in Bitcoin 10/15/20236,440,000 shares $53.90 million +0.2%7.4%4.9 $8.37 9/30/20236,430,000 shares $60.25 million +26.6%7.4%4.1 $9.37 9/15/20235,080,000 shares $49.89 million +11.2%5.8%3.3 $9.82 8/31/20234,570,000 shares $57.86 million -9.2%5.4%3.4 $12.66 8/15/20235,030,000 shares $66.09 million +42.1%5.9%4.1 $13.14 7/31/20233,540,000 shares $49.84 million -10.8%4.2%3 $14.08 7/15/20233,970,000 shares $91.67 million -4.3%4.7%3.5 $23.09 6/30/20234,150,000 shares $101.80 million -0.2%4.9%5 $24.53 6/15/20234,160,000 shares $108.08 million -25.5%4.9%5 $25.98 5/31/20235,580,000 shares $148.82 million +10.5%6.6%6.3 $26.67 5/15/20235,050,000 shares $129.48 million +7.5%6.0%5.1 $25.64 4/30/20234,700,000 shares $118.21 million -1.9%5.6%4.6 $25.15 4/15/20234,790,000 shares $117.59 million +11.9%5.7%4.6 $24.55 3/31/20234,280,000 shares $99.60 million -11.2%5.2%4.2 $23.27 3/15/20234,820,000 shares $113.37 million -1.0%5.8%4.8 $23.52 2/28/20234,870,000 shares $111.04 million +10.7%5.9%5.2 $22.80 2/15/20234,400,000 shares $117.57 million +8.9%5.3%5 $26.72 1/31/20234,040,000 shares $119.38 million +8.3%4.9%4.8 $29.55 1/15/20233,730,000 shares $99.11 million -10.1%4.6%4.5 $26.57 12/30/20224,150,000 shares $105.04 million +9.2%5.1%5.1 $25.31 12/15/20223,800,000 shares $95.72 million -5.5%4.7%4.3 $25.19 11/30/20224,020,000 shares $113.44 million -4.5%5.0%4.2 $28.22 11/15/20224,210,000 shares $115.14 million -4.3%5.3%4.2 $27.35 10/31/20224,400,000 shares $96.71 million +4.3%5.6%4 $21.98 10/15/20224,220,000 shares $87.23 million -14.9%5.4%4 $20.67 9/30/20224,960,000 shares $95.63 million +8.3%6.3%4.8 $19.28 9/15/20224,580,000 shares $93.02 million -6.5%5.9%4.2 $20.31 8/31/20224,900,000 shares $116.38 million -14.0%6.3%4.7 $23.75 8/15/20225,700,000 shares $159.03 million -20.6%7.6%5.7 $27.90 7/31/20227,180,000 shares $199.68 million +1.4%9.8%7.4 $27.81 7/15/20227,080,000 shares $205.46 million -6.0%9.7%7.1 $29.02 6/30/20227,530,000 shares $191.79 million +0.9%10.3%7.1 $25.47 6/15/20227,460,000 shares $178.44 million -4.9%10.2%4.6 $23.92 5/31/20227,840,000 shares $202.35 million -5.2%10.8%4.9 $25.81 5/15/20228,270,000 shares $187.15 million -6.7%11.4%5 $22.63 4/30/20228,860,000 shares $180.30 million +4.2%12.3%5.3 $20.35 4/15/20228,500,000 shares $203.41 million +134.8%11.8%5.1 $23.93 3/31/20223,620,000 shares $93.11 million -3.7%5.1%2 $25.72 3/15/20223,760,000 shares $86.44 million +7.4%5.2%2.8 $22.99 2/28/20223,500,000 shares $88.17 million +2.6%4.9%2.3 $25.19 2/15/20223,410,000 shares $109.94 million +16.4%4.8%2 $32.24 1/31/20222,930,000 shares $100.59 million -17.0%4.1%1.7 $34.33 1/15/20223,530,000 shares $136.61 million -9.3%4.9%2 $38.70 12/31/20213,890,000 shares $162.87 million -23.1%5.4%2.6 $41.87 12/15/20215,060,000 shares $261.20 million -8.3%7.0%3.3 $51.62 11/30/20215,520,000 shares $261.76 million +3.6%7.9%4.5 $47.42 11/15/20215,330,000 shares $175.30 million -0.7%7.7%5.8 $32.89 10/29/20215,370,000 shares $202.61 million -1.1%7.8%5.6 $37.73 10/15/20215,430,000 shares $212.26 million +3.4%7.9%5.6 $39.09 9/30/20215,250,000 shares $228.48 million -8.1%7.7%5.4 $43.52This Signal Only Flashes Once Every 4 Years – And It Just Triggered (Ad)This same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in crypto. Now it’s back, and the smart money is already positioning. A free training reveals the step-by-step strategy and altcoin picks designed to help you capitalize on the next wave.Missed the Last Crypto Boom? Don’t Miss This One - PLUS Claim your $10 in Bitcoin 9/15/20215,710,000 shares $298.69 million -2.9%8.3%6.2 $52.31 8/31/20215,880,000 shares $303.06 million -13.2%8.6%6.7 $51.54 8/13/20216,770,000 shares $286.98 million -14.6%9.9%7.5 $42.39 7/30/20217,930,000 shares $282.70 million -7.9%11.6%10.1 $35.65 7/15/20218,610,000 shares $312.28 million +2.3%12.4%12.1 $36.27 6/30/20218,420,000 shares $398.10 million -6.6%12.3%11.6 $47.28 6/15/20219,010,000 shares $394.10 million +4.7%14.2%12.7 $43.74 5/28/20218,610,000 shares $360.85 million +0.8%13.6%9.6 $41.91 5/14/20218,540,000 shares $337.76 million +1.8%13.6%8.1 $39.55 4/30/20218,390,000 shares $401.29 million +1.9%14.0%7.2 $47.83 4/15/20218,230,000 shares $374.88 million +4.1%13.9%4.8 $45.55 3/31/20217,910,000 shares $377.86 million -5.4%13.6%4.2 $47.77 3/15/20218,360,000 shares $441.58 million +3.1%14.9%4.3 $52.82 2/26/20218,110,000 shares $519.93 million -3.9%14.5%4.7 $64.11 2/12/20218,440,000 shares $607.43 million -14.3%15.1%5.6 $71.97 1/29/20219,850,000 shares $578.49 million -31.9%17.5%6.4 $58.73 1/15/202114,470,000 shares $528.01 million +8.2%30.5%10.6 $36.49 12/31/202013,370,000 shares $376.63 million +21.3%28.2%14.1 $28.17 12/15/202011,020,000 shares $359.47 million -4.8%23.2%11.8 $32.62 11/30/202011,570,000 shares $342.93 million +7.5%24.4%10.8 $29.64 10/30/20208,960,000 shares $303.12 million +18.7%19.0%7.6 $33.83 10/15/20207,550,000 shares $310.23 million +4.3%16.0%6.7 $41.09 VIR Short Interest - Frequently Asked Questions What is Vir Biotechnology's current short interest? Short interest is the volume of Vir Biotechnology shares that have been sold short but have not yet been covered or closed out. As of June 15th, traders have sold 11,370,000 shares of VIR short. 12.76% of Vir Biotechnology's shares are currently sold short. Learn More on Vir Biotechnology's current short interest. What is a good short interest ratio for Vir Biotechnology? 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. VIR shares currently have a short interest ratio of 8.0. Learn More on Vir Biotechnology's short interest ratio. Which institutional investors are shorting Vir Biotechnology? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Vir Biotechnology: Caption Management LLC, Nomura Holdings Inc., and Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Vir Biotechnology? 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. 12.76% of Vir Biotechnology's floating shares are currently sold short. Is Vir Biotechnology's short interest increasing or decreasing? Vir Biotechnology saw a drop in short interest in June. As of June 15th, there was short interest totaling 11,370,000 shares, a drop of 1.3% from the previous total of 11,520,000 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 Vir Biotechnology's float size? Vir Biotechnology currently has issued a total of 138,240,000 shares. Some of Vir Biotechnology'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. Vir Biotechnology currently has a public float of 89,080,000 shares. How does Vir Biotechnology's short interest compare to its competitors? 12.76% of Vir Biotechnology's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Vir Biotechnology: Viking Therapeutics, Inc. (26.43%), Alvotech (1.28%), Catalyst Pharmaceuticals, Inc. (7.07%), HUTCHMED (China) Limited Sponsored ADR (0.26%), Immunovant, Inc. (29.05%), Organon & Co. (6.16%), Mirum Pharmaceuticals, Inc. (14.66%), Amneal Pharmaceuticals, Inc. (3.72%), ImmunityBio, Inc. (35.32%), Xenon Pharmaceuticals Inc. (5.09%), 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 ($69.26 billion), Invesco QQQ ($25.22 billion), iShares Russell 2000 ETF ($20.33 billion), iShares 20+ Year Treasury Bond ETF ($9.99 billion), MicroStrategy Incorporated ($9.12 billion), Canadian Natural Resources Limited ($6.73 billion), SPDR S&P Biotech ETF ($6.52 billion), Invesco S&P 500 Equal Weight ETF ($5.60 billion), Financial Select Sector SPDR Fund ($4.64 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.59 billion). View all of the most shorted stocks. What does it mean to sell short Vir Biotechnology stock? Short selling VIR is an investing strategy that aims to generate trading profit from Vir Biotechnology as its price is falling. VIR shares are trading up $0.14 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 Vir Biotechnology? A short squeeze for Vir Biotechnology 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 VIR, which in turn drives the price of the stock up even further. How often is Vir Biotechnology'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 VIR, twice per month. The most recent reporting period available is June, 15 2025. More Short Interest Resources from MarketBeat Related Companies VKTX Short Squeeze ALVO Short Squeeze CPRX Short Squeeze HCM Short Squeeze IMVT Short Squeeze OGN Short Squeeze MIRM Short Squeeze AMRX Short Squeeze IBRX Short Squeeze XENE Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:VIR) was last updated on 7/2/2025 by MarketBeat.com Staff From Our PartnersTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredBuffett’s $325 Billion Cash Problem — Solved by Gold?A bombshell announcement is just weeks away — and it could send shockwaves through the gold market. Most inves...Golden Portfolio | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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