Vanda Pharmaceuticals (VNDA) Short Interest Ratio & Short Volume $5.38 +0.15 (+2.87%) Closing price 10/15/2025 04:00 PM EasternExtended Trading$5.38 0.00 (0.00%) As of 04:04 AM 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Vanda Pharmaceuticals Short Interest DataVanda Pharmaceuticals (VNDA) has a short interest of 4.61 million shares, representing 8.38% of the float (the number of shares available for trading by the public). This marks a -0.86% decrease in short interest from the previous month. The short interest ratio (days to cover) is 9.9, indicating that it would take 9.9 days of the average trading volume of 555,565 shares to cover all short positions.Current Short Interest4,610,000 sharesPrevious Short Interest4,650,000 sharesChange Vs. Previous Month-0.86%Dollar Volume Sold Short$20.19 millionShort Interest Ratio9.9 Days to CoverLast Record DateSeptember 15, 2025Outstanding Shares59,090,000 sharesFloat Size55,020,000 sharesShort Percent of Float8.38%Today's Trading Volume461,034 sharesAverage Trading Volume555,565 sharesToday's Volume Vs. Average83% Short Selling Vanda Pharmaceuticals? Sign up to receive the latest short interest report for Vanda Pharmaceuticals and its competitors with MarketBeat's FREE newsletter. 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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 9/15/20254,610,000 shares $20.19 million -0.9%8.4%9.9 $4.38 8/31/20254,650,000 shares $21.99 million +0.9%8.5%10 $4.73 8/15/20254,610,000 shares $20.10 million +1.8%8.4%10 $4.36 7/31/20254,530,000 shares $19.30 million -1.3%8.2%9.3 $4.26 7/15/20254,590,000 shares $21.85 million +2,603.2%8.4%9.9 $4.76 6/30/2025169,800 shares $801.46 thousand -96.4%7.7%3 $4.72 6/15/20254,730,000 shares $21.33 million -0.6%8.6%8.7 $4.51 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 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. 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 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 $4.25 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 $16.34 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 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 covered or closed out. As of September 15th, investors have sold 4,610,000 shares of VNDA short. 8.38% 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 10.0. 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: Group One Trading LLC, and 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. 8.38% 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 September. As of September 15th, there was short interest totaling 4,610,000 shares, a drop of 0.9% from the previous total of 4,650,000 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 59,090,000 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 55,020,000 shares. How does Vanda Pharmaceuticals' short interest compare to its competitors? 8.38% 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: OPKO Health, Inc. (9.17%), Dynavax Technologies Corporation (11.74%), Zenas BioPharma, Inc. (53.83%), Innoviva, Inc. (10.61%), Geron Corporation (14.44%), Myriad Genetics, Inc. (9.13%), Lexicon Pharmaceuticals, Inc. (7.81%), Verastem, Inc. (29.46%), Rigel Pharmaceuticals, Inc. (12.61%), Emergent Biosolutions Inc. (17.36%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: AppLovin Corporation ($8.81 billion), Canadian Natural Resources Limited ($5.82 billion), Reddit Inc. ($5.19 billion), Coinbase Global, Inc. ($4.52 billion), Robinhood Markets, Inc. ($4.30 billion), Charter Communications, Inc. ($3.75 billion), CoreWeave Inc. ($3.66 billion), Seagate Technology Holdings PLC ($3.57 billion), Live Nation Entertainment, Inc. ($3.33 billion), and Rocket Lab Corporation ($3.26 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 up $0.15 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 September, 15 2025. More Short Interest Resources from MarketBeat Related Companies OPKO Health Short Interest Data Dynavax Technologies Short Interest Data Zenas BioPharma Short Interest Data Innoviva Short Interest Data Geron Short Interest Data Myriad Genetics Short Interest Data Lexicon Pharmaceuticals Short Interest Data Verastem Short Interest Data Rigel Pharmaceuticals Short Interest Data Emergent Biosolutions 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 10/16/2025 by MarketBeat.com Staff From Our PartnersOptions Pro Reveals His #1 Retirement Income TradeIf you can be at your computer between 9 a.m. and 10:45 a.m. on most weekdays, I’ll show you a simple trading ...Base Camp Trading | SponsoredURGENT: The Market's 3 Red Flags Are FlashingHere’s the uncomfortable truth: The smartest investors in the world are already preparing for a crash befor...StockEarnings | SponsoredElon’s Out 🚫. 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Now, He Says THIS Stock Will…A Millionaire With SEVEN Clicks? $1,000 in just seven stocks in 2004 could have turned into a million-dolla...The Oxford Club | 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 Vanda Pharmaceuticals Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Vanda Pharmaceuticals 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. Receive short-term trading ideas from MarketBeat. 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