Greenwich LifeSciences (GLSI) Short Interest Ratio & Short Volume $9.73 -0.57 (-5.53%) Closing price 04:00 PM EasternExtended Trading$9.73 0.00 (0.00%) As of 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 AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Greenwich LifeSciences Short Interest DataGreenwich LifeSciences (GLSI) has a short interest of 998,000 shares, representing 16.77% of the float (the number of shares available for trading by the public). This marks a 9.59% increase in short interest from the previous month. The short interest ratio (days to cover) is 14.1, indicating that it would take 14.1 days of the average trading volume of 46,053 shares to cover all short positions.Current Short Interest998,000 sharesPrevious Short Interest910,700 sharesChange Vs. Previous Month+9.59%Dollar Volume Sold Short$10.08 millionShort Interest Ratio14.1 Days to CoverLast Record DateApril 30, 2025Outstanding Shares13,274,000 sharesFloat Size5,950,000 sharesShort Percent of Float16.77%Today's Trading Volume35,664 sharesAverage Trading Volume46,053 sharesToday's Volume Vs. Average77% Short Selling Greenwich LifeSciences? Sign up to receive the latest short interest report for Greenwich LifeSciences and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartGLSI Short Interest Over TimeGLSI Days to Cover Over TimeGLSI Percentage of Float Shorted Over Time Greenwich LifeSciences Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/2025998,000 shares $10.08 million +9.6%16.8%14.1 $10.10 4/15/2025910,700 shares $8.15 million +22.5%15.3%13.1 $8.95 3/31/2025743,300 shares $7.09 million +12.9%12.6%12.4 $9.54 3/15/2025658,400 shares $7.90 million +2.3%11.1%19.8 $12.00 2/28/2025643,500 shares $7.86 million -1.5%10.9%21 $12.22 2/15/2025653,100 shares $8.09 million +1.4%11.1%20 $12.38 1/31/2025644,000 shares $8.33 million +5.1%10.9%19.1 $12.94 1/15/2025612,700 shares $7.64 million +10.1%10.4%17.8 $12.47 12/31/2024556,700 shares $6.25 million +5.0%9.4%18.3 $11.23 12/15/2024530,200 shares $7.16 million +8.1%9.0%18.8 $13.51 Get the Latest News and Ratings for GLSI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Greenwich LifeSciences and its competitors with MarketBeat's FREE daily newsletter. 11/30/2024490,400 shares $6.99 million +4.2%8.3%16.8 $14.25 11/15/2024470,700 shares $5.91 million -2.9%8.0%15.4 $12.56 10/31/2024484,600 shares $6.52 million -3.3%8.2%16.3 $13.45 10/15/2024501,200 shares $7.10 million +1.1%8.5%16.3 $14.16 9/30/2024495,700 shares $7.12 million -1.9%8.4%14.8 $14.37 9/15/2024505,200 shares $7.54 million +8.3%8.5%10.9 $14.93 8/31/2024466,600 shares $6.54 million +3.3%7.9%9.8 $14.02 8/15/2024451,700 shares $6.13 million +8.7%7.8%10 $13.58 7/31/2024415,600 shares $6.70 million +12.1%7.3%9.2 $16.12 7/15/2024370,600 shares $5.80 million +42.4%6.5%8.2 $15.66 6/30/2024260,200 shares $4.49 million +13.4%4.6%5.7 $17.26 6/15/2024229,400 shares $3.39 million +17.6%4.1%6.8 $14.76 5/31/2024195,100 shares $2.89 million +10.2%3.3%5.2 $14.83 5/15/2024177,100 shares $2.61 million -6.4%3.0%4.1 $14.75 4/30/2024189,100 shares $2.35 million +2.2%3.2%3.6 $12.42 4/15/2024185,100 shares $2.64 million +31.7%3.2%3.6 $14.26 3/31/2024140,500 shares $2.80 million +2.5%2.4%2.9 $19.94 3/15/2024137,100 shares $2.40 million +13.0%2.4%3 $17.50 2/29/2024121,300 shares $1.48 million -30.1%2.1%3.2 $12.16 2/15/2024173,600 shares $2.01 million +12.4%3.0%5.5 $11.60 1/31/2024154,500 shares $1.33 million -4.2%2.6%8.1 $8.64 1/15/2024161,200 shares $1.49 million +5.8%2.8%9.2 $9.26 12/31/2023152,300 shares $1.60 million +32.8%2.6%9.5 $10.52 12/15/2023114,700 shares $1.23 million -31.3%2.0%7.9 $10.76 11/30/2023167,000 shares $1.95 million +0.1%2.9%11.6 $11.70 11/15/2023166,800 shares $1.83 million +2.0%2.9%12.4 $10.98 10/31/2023163,500 shares $1.37 million -11.3%2.8%12.7 $8.36 10/15/2023184,300 shares $1.59 million -5.5%3.1%13.8 $8.64 9/30/2023195,100 shares $1.72 million +0.1%3.3%14.2 $8.84 9/15/2023194,900 shares $1.76 million +7.9%3.3%12.8 $9.04Only a handful of people know the setup that's defied these chaotic markets. 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(Ad)So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal with Saudi Arabia to power its new AI empire 🤯 We’re talking about hundreds of thousands of chips, including their latest Grace Blackwell supercomputer.🎯 Click here to watch the video and get the free ticker XGPT just flagged. 7/30/2021205,100 shares $8.10 million +3.1%8.4%1.9 $39.47 7/15/2021199,000 shares $8.34 million +2.4%8.2%1.6 $41.92 6/30/2021194,400 shares $8.74 million +63.5%8.0%1 $44.94 6/15/2021118,900 shares $4.72 million -12.6%4.9%0.3 $39.73 5/28/2021136,000 shares $5.04 million -4.2%5.6%0.3 $37.08 5/14/2021142,000 shares $4.51 million +15.5%5.9%0.2 $31.78 4/30/2021122,900 shares $4.69 million -61.3%5.2%0.2 $38.17 4/15/2021317,500 shares $11.23 million +65.5%13.3%0.5 $35.36 3/31/2021191,900 shares $6.31 million -21.3%11.4%0.3 $32.90 3/15/2021243,900 shares $7.10 million +218.8%14.4%0.5 $29.12 2/26/202176,500 shares $2.50 million +58.4%4.8%0.1 $32.63 2/12/202148,300 shares $1.93 million +20.5%3.1%0.1 $39.98 1/29/202140,100 shares $1.37 million -20.9%2.5%0 $34.20 1/15/202150,700 shares $1.82 million No Change3.2%0.1 $35.90 GLSI Short Interest - Frequently Asked Questions What is Greenwich LifeSciences' current short interest? Short interest is the volume of Greenwich LifeSciences shares that have been sold short but have not yet been covered or closed out. As of April 30th, investors have sold 998,000 shares of GLSI short. 16.77% of Greenwich LifeSciences' shares are currently sold short. Learn More on Greenwich LifeSciences' current short interest. What is a good short interest ratio for Greenwich LifeSciences? 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. GLSI shares currently have a short interest ratio of 14.0. Learn More on Greenwich LifeSciences's short interest ratio. What is a good short interest percentage for Greenwich LifeSciences? 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. 16.77% of Greenwich LifeSciences' floating shares are currently sold short. Is Greenwich LifeSciences' short interest increasing or decreasing? Greenwich LifeSciences saw a increase in short interest in April. As of April 30th, there was short interest totaling 998,000 shares, an increase of 9.6% from the previous total of 910,700 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 Greenwich LifeSciences' float size? Greenwich LifeSciences currently has issued a total of 13,274,000 shares. Some of Greenwich LifeSciences' 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. Greenwich LifeSciences currently has a public float of 5,950,000 shares. How does Greenwich LifeSciences' short interest compare to its competitors? 16.77% of Greenwich LifeSciences' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Greenwich LifeSciences: Kura Oncology, Inc. (9.56%), Mind Medicine (MindMed) Inc. (14.74%), Ginkgo Bioworks Holdings, Inc. (31.09%), UroGen Pharma Ltd. (10.89%), Arvinas, Inc. (10.14%), Taysha Gene Therapies, Inc. (12.71%), Cullinan Therapeutics, Inc. (20.91%), Eton Pharmaceuticals, Inc. (2.62%), Altimmune, Inc. (27.84%), Sana Biotechnology, Inc. (31.94%), 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 Greenwich LifeSciences stock? Short selling GLSI is an investing strategy that aims to generate trading profit from Greenwich LifeSciences as its price is falling. GLSI shares are trading up $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 Greenwich LifeSciences? A short squeeze for Greenwich LifeSciences 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 GLSI, which in turn drives the price of the stock up even further. How often is Greenwich LifeSciences' 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 GLSI, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies Kura Oncology Short Interest Data Mind Medicine (MindMed) Short Interest Data Ginkgo Bioworks Short Interest Data UroGen Pharma Short Interest Data Arvinas Short Interest Data Taysha Gene Therapies Short Interest Data Cullinan Therapeutics Short Interest Data Eton Pharmaceuticals Short Interest Data Altimmune Short Interest Data Sana Biotechnology 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:GLSI) was last updated on 5/21/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. 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