Vanda Pharmaceuticals (VNDA) Short Interest Ratio & Short Volume $4.63 +0.05 (+1.09%) As of 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Vanda Pharmaceuticals Short Interest DataVanda Pharmaceuticals (VNDA) has a short interest of 4.76 million shares, representing 8.66% of the float (the number of shares available for trading by the public). This marks a -2.26% decrease in short interest from the previous month. The short interest ratio (days to cover) is 8.4, indicating that it would take 8.4 days of the average trading volume of 656,731 shares to cover all short positions.Current Short Interest4,760,000 sharesPrevious Short Interest4,870,000 sharesChange Vs. Previous Month-2.26%Dollar Volume Sold Short$20.90 millionShort Interest Ratio8.4 Days to CoverLast Record DateMay 31, 2025Outstanding Shares58,934,000 sharesFloat Size54,940,000 sharesShort Percent of Float8.66%Today's Trading Volume266,972 sharesAverage Trading Volume656,731 sharesToday's Volume Vs. Average41% Short Selling Vanda Pharmaceuticals? Sign up to receive the latest short interest report for Vanda Pharmaceuticals and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartVNDA Short Interest Over TimeVNDA Days to Cover Over TimeVNDA Percentage of Float Shorted Over Time Vanda Pharmaceuticals Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/31/20254,760,000 shares $20.90 million -2.3%8.7%8.4 $4.39 5/15/20254,870,000 shares $19.14 million +4.5%8.9%7.7 $3.93 4/30/20254,660,000 shares $21.02 million -4.5%8.5%7 $4.51 4/15/20254,880,000 shares $21.33 million +21.4%9.0%7.4 $4.37 3/31/20254,020,000 shares $18.45 million +12.9%7.4%5.9 $4.59 3/15/20253,560,000 shares $17.73 million +8.5%6.6%5.7 $4.98 2/28/20253,280,000 shares $15.61 million -11.8%6.0%4.9 $4.76 2/15/20253,720,000 shares $16.44 million -0.5%6.9%5.8 $4.42 1/31/20253,740,000 shares $16.49 million +13.7%6.8%5.9 $4.41 1/15/20253,290,000 shares $14.64 million +2.8%6.0%5.3 $4.45 Get the Latest News and Ratings for VNDA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Vanda Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 12/31/20243,200,000 shares $15.33 million +1.9%5.8%4.8 $4.79 12/15/20243,140,000 shares $14.48 million +1.6%5.7%4.8 $4.61 11/30/20243,090,000 shares $15.91 million -4.0%5.6%4.7 $5.15 11/15/20243,220,000 shares $16.10 million -13.9%5.8%5.2 $5.00 10/31/20243,740,000 shares $17.39 million -6.0%6.8%6.2 $4.65 10/15/20243,980,000 shares $19.10 million +17.1%7.2%6.7 $4.80 9/30/20243,400,000 shares $15.95 million +1.5%6.2%5.9 $4.69 9/15/20243,350,000 shares $17.09 million +1.2%6.1%5.1 $5.10 8/31/20243,310,000 shares $17.51 million +5.1%6.0%4.4 $5.29 8/15/20243,150,000 shares $16.29 million +13.3%5.7%3.3 $5.17 7/31/20242,780,000 shares $16.24 million -0.4%5.0%2.6 $5.84 7/15/20242,790,000 shares $16.80 million -2.5%5.1%2.3 $6.02 6/30/20242,860,000 shares $16.16 million +0.7%5.2%1.7 $5.65 6/15/20242,840,000 shares $17.72 million +14.1%5.2%1.1 $6.24 5/31/20242,490,000 shares $12.72 million -11.1%4.5%1 $5.11 5/15/20242,800,000 shares $15.01 million +21.7%5.1%1.2 $5.36 4/30/20242,300,000 shares $10.95 million +11.1%4.2%1 $4.76 4/15/20242,070,000 shares $8.40 million -16.9%3.8%0.9 $4.06 3/31/20242,490,000 shares $10.23 million -17.0%4.6%1.3 $4.11 3/15/20243,000,000 shares $11.43 million -7.4%5.5%3.1 $3.81 2/29/20243,240,000 shares $14.48 million +9.5%6.0%3.2 $4.47 2/15/20242,960,000 shares $12.94 million +29.3%5.4%3 $4.37 1/31/20242,290,000 shares $8.24 million +30.9%N/A2.3 $3.60 1/15/20241,750,000 shares $6.74 million +1.2%N/A1.9 $3.85 12/31/20231,730,000 shares $7.30 million -9.0%N/A1.9 $4.22 12/15/20231,900,000 shares $7.37 million -8.2%N/A2.1 $3.88 11/30/20232,070,000 shares $7.70 million +1.5%N/A1.7 $3.72 11/15/20232,040,000 shares $7.24 million +21.4%N/A1.6 $3.55 10/31/20231,680,000 shares $7.36 million +0.6%N/A1.4 $4.38 10/15/20231,670,000 shares $7.10 million +10.6%N/A1.4 $4.25New Rule Hits in July — The Smart Money Already Moved (Ad)A little-known regulation quietly goes into effect this July. 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We're talking about something they don't want you to notice — because the fewer people who act on this, the better it is for them.To help you get started, we're giving away a FREE Wealth Protection Guide that shows you exactly how 9/30/20231,510,000 shares $6.52 million -64.1%3.1%1.3 $4.32 9/15/20234,210,000 shares $19.79 million +50.4%N/A3.8 $4.70 8/31/20232,800,000 shares $14.53 million +5.3%5.0%3.6 $5.19 8/15/20232,660,000 shares $15.88 million +18.2%4.8%4.5 $5.97 7/31/20232,250,000 shares $13.01 million +5.6%4.1%3.7 $5.78 7/15/20232,130,000 shares $12.84 million -5.8%3.8%3.8 $6.03 6/30/20232,260,000 shares $14.89 million -20.1%4.1%4 $6.59 6/15/20232,830,000 shares $17.94 million No Change5.1%5 $6.34 5/31/20232,830,000 shares $16.84 million -1.1%5.1%4.9 $5.95 5/15/20232,860,000 shares $18.08 million +1.8%5.2%5 $6.32 4/30/20232,810,000 shares $17.25 million -2.1%5.1%4.9 $6.14 4/15/20232,870,000 shares $18.54 million -8.0%5.3%5.1 $6.46 3/31/20233,120,000 shares $21.18 million +18.6%5.7%5.4 $6.79 3/15/20232,630,000 shares $16.81 million +8.2%4.8%4.2 $6.39 2/28/20232,430,000 shares $15.65 million +13.6%4.5%3.4 $6.44 2/15/20232,140,000 shares $14.96 million +7.0%3.9%3.2 $6.99 1/31/20232,000,000 shares $15.36 million +3.6%3.7%3.1 $7.68 1/15/20231,930,000 shares $14.80 million +0.5%3.6%3.1 $7.67 12/30/20221,920,000 shares $14.19 million +4.9%3.5%3.2 $7.39 12/15/20221,830,000 shares $12.77 million -20.8%3.4%3.3 $6.98 11/30/20222,310,000 shares $25.20 million -4.9%4.2%6.4 $10.91 11/15/20222,430,000 shares $25.93 million +2.5%4.5%6.4 $10.67 10/31/20222,370,000 shares $24.81 million -2.1%4.4%6.1 $10.47 10/15/20222,420,000 shares $23.74 million +0.8%4.5%6.2 $9.81 9/30/20222,400,000 shares $23.71 million +1.3%4.4%6.2 $9.88 9/15/20222,370,000 shares $24.03 million +1.7%4.4%5.6 $10.14 8/31/20222,330,000 shares $24.65 million +0.4%4.3%5 $10.58 8/15/20222,320,000 shares $24.34 million +3.6%4.3%5.1 $10.49 7/31/20222,240,000 shares $24.15 million -10.0%4.1%4.5 $10.78 7/15/20222,490,000 shares $28.56 million -41.4%4.6%4.7 $11.47 6/30/20224,250,000 shares $46.33 million +3.2%7.9%7.7 $10.90 6/15/20224,120,000 shares $39.72 million -1.9%8.1%7.8 $9.64 5/31/20224,200,000 shares $41.29 million -8.7%7.8%8.6 $9.83 5/15/20224,600,000 shares $46.05 million +9.8%8.5%8.6 $10.01 4/30/20224,190,000 shares $41.56 million +2.0%7.7%6.8 $9.92 4/15/20224,110,000 shares $46.69 million +1.7%7.7%7 $11.36 3/31/20224,040,000 shares $45.69 million -3.6%7.5%7 $11.31 3/15/20224,190,000 shares $47.10 million +6.1%7.8%7.6 $11.24 2/28/20223,950,000 shares $44.87 million -10.0%7.4%6.8 $11.36 2/15/20224,390,000 shares $61.20 million +19.0%8.2%7.8 $13.94 1/31/20223,690,000 shares $55.94 million -4.7%6.9%7.2 $15.16 1/15/20223,870,000 shares $58.05 million +5.7%7.2%8.1 $15.00 12/31/20213,660,000 shares $57.43 million -2.7%6.8%7.7 $15.69 12/15/20213,760,000 shares $62.68 million -5.1%7.0%8 $16.67 11/30/20213,960,000 shares $64.15 million -5.3%7.4%9.1 $16.20 11/15/20214,180,000 shares $73.69 million -15.4%7.8%10 $17.63 10/29/20214,940,000 shares $84.57 million +2.5%9.2%12 $17.12 10/15/20214,820,000 shares $88.74 million +2.1%9.0%12.2 $18.41 9/30/20214,720,000 shares $80.90 million -0.4%8.8%12.6 $17.14 9/15/20214,740,000 shares $77.45 million -3.1%8.9%10.7 $16.34Gold is soaring. 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Just a simple fund delivering monthly payouts — like clockwork.Click here to discover the income ETF behind it all. 8/31/20214,890,000 shares $81.86 million +5.4%9.1%10.8 $16.74 8/13/20214,640,000 shares $76.42 million -14.4%8.7%10 $16.47 7/30/20215,420,000 shares $88.40 million +1.1%10.1%11.5 $16.31 7/15/20215,360,000 shares $103.72 million +11.4%10.0%12.5 $19.35 6/30/20214,810,000 shares $103.46 million -3.6%9.0%11.2 $21.51 6/15/20214,990,000 shares $96.71 million +1.8%9.3%12.7 $19.38 5/28/20214,900,000 shares $86.68 million -1.2%9.2%12.2 $17.69 5/14/20214,960,000 shares $91.31 million -2.8%N/A11.7 $18.41 4/30/20215,100,000 shares $85.12 million -3.0%N/A9.3 $16.69 4/15/20215,260,000 shares $86.53 million -0.2%N/A9.6 $16.45 3/31/20215,270,000 shares $78.42 million +7.6%10.0%9.2 $14.88 3/15/20214,900,000 shares $87.76 million -4.7%9.3%8.6 $17.91 2/26/20215,140,000 shares $99.46 million -9.5%9.8%9.2 $19.35 2/12/20215,680,000 shares $106.05 million +0.4%10.8%10.3 $18.67 1/29/20215,660,000 shares $82.69 million -4.4%10.8%13 $14.61 1/15/20215,920,000 shares $82.76 million -4.5%11.3%12.9 $13.98 12/31/20206,200,000 shares $82.40 million -4.0%11.8%13.5 $13.29 12/15/20206,460,000 shares $84.37 million +7.3%12.3%13.1 $13.06 11/30/20206,020,000 shares $74.71 million -2.0%11.4%11.6 $12.41 10/30/20206,170,000 shares $67.81 million +6.6%11.7%10.8 $10.99 10/15/20205,790,000 shares $62.01 million -2.9%11.0%10 $10.71 9/30/20205,960,000 shares $57.57 million -4.3%11.3%9.8 $9.66 9/15/20206,230,000 shares $59.99 million -3.3%11.8%10.2 $9.63 8/31/20206,440,000 shares $66.27 million +6.1%12.2%10.1 $10.29 8/14/20206,070,000 shares $70.84 million +0.8%11.5%9.1 $11.67 7/31/20206,020,000 shares $60.68 million -0.3%11.5%9 $10.08 7/15/20206,040,000 shares $71.33 million -3.1%11.5%9 $11.81 6/30/20206,230,000 shares $69.90 million +5.4%11.9%9 $11.22 6/15/20205,910,000 shares $65.72 million +18.7%11.3%7.9 $11.12 VNDA Short Interest - Frequently Asked Questions What is Vanda Pharmaceuticals' current short interest? Short interest is the volume of Vanda Pharmaceuticals shares that have been sold short but have not yet been closed out or covered. As of May 31st, investors have sold 4,760,000 shares of VNDA short. 8.66% of Vanda Pharmaceuticals' shares are currently sold short. Learn More on Vanda Pharmaceuticals' current short interest. What is a good short interest ratio for Vanda Pharmaceuticals? 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. VNDA shares currently have a short interest ratio of 8.0. Learn More on Vanda Pharmaceuticals's short interest ratio. Which institutional investors are shorting Vanda Pharmaceuticals? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Vanda Pharmaceuticals: Caption Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Vanda Pharmaceuticals? 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. 8.66% of Vanda Pharmaceuticals' floating shares are currently sold short. Is Vanda Pharmaceuticals' short interest increasing or decreasing? Vanda Pharmaceuticals saw a drop in short interest during the month of May. As of May 31st, there was short interest totaling 4,760,000 shares, a drop of 2.3% from the previous total of 4,870,000 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 Vanda Pharmaceuticals' float size? Vanda Pharmaceuticals currently has issued a total of 58,934,000 shares. Some of Vanda Pharmaceuticals' 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. Vanda Pharmaceuticals currently has a public float of 54,940,000 shares. How does Vanda Pharmaceuticals' short interest compare to its competitors? 8.66% of Vanda Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to Vanda Pharmaceuticals: Geron Co. (11.02%), Regulus Therapeutics Inc. (3.65%), Myriad Genetics, Inc. (9.85%), Rigel Pharmaceuticals, Inc. (11.46%), Emergent BioSolutions Inc. (15.08%), Verastem, Inc. (27.19%), XOMA Co. (1.74%), Lexicon Pharmaceuticals, Inc. (16.92%), Codexis, Inc. (6.79%), Achieve Life Sciences, Inc. (7.77%), 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 ($64.96 billion), Invesco QQQ ($27.88 billion), iShares Russell 2000 ETF ($19.94 billion), iShares 20+ Year Treasury Bond ETF ($9.69 billion), Strategy Incorporated ($8.58 billion), SPDR S&P Biotech ETF ($5.72 billion), Invesco S&P 500 Equal Weight ETF ($5.45 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.70 billion), Charter Communications, Inc. ($4.54 billion), and Industrial Select Sector SPDR Fund ($4.49 billion). View all of the most shorted stocks. What does it mean to sell short Vanda Pharmaceuticals stock? Short selling VNDA is an investing strategy that aims to generate trading profit from Vanda Pharmaceuticals as its price is falling. VNDA shares are trading down $0.08 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 Vanda Pharmaceuticals? A short squeeze for Vanda Pharmaceuticals 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 VNDA, which in turn drives the price of the stock up even further. How often is Vanda Pharmaceuticals' 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 VNDA, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies Geron Short Interest Data Regulus Therapeutics Short Interest Data Myriad Genetics Short Interest Data Rigel Pharmaceuticals Short Interest Data Emergent BioSolutions Short Interest Data Verastem Short Interest Data XOMA Short Interest Data Lexicon Pharmaceuticals Short Interest Data Codexis Short Interest Data Achieve Life Sciences 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:VNDA) was last updated on 6/12/2025 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 | SponsoredTrump wipes out trillions overnight…Is there anybody more powerful than Donald Trump right now? 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