SELLAS Life Sciences Group (SLS) Short Interest Ratio & Short Volume $1.84 +0.06 (+3.09%) As of 11:45 AM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock SELLAS Life Sciences Group Short Interest DataSELLAS Life Sciences Group (SLS) has a short interest of 29.15 million shares. This marks a 10.37% increase in short interest from the previous month. The short interest ratio (days to cover) is 10.7, indicating that it would take 10.7 days of the average trading volume of 2.51 million shares to cover all short positions.Current Short Interest29,150,000 sharesPrevious Short Interest26,410,000 sharesChange Vs. Previous Month+10.37%Dollar Volume Sold Short$47.51 millionShort Interest Ratio10.7 Days to CoverLast Record DateAugust 15, 2025Outstanding Shares105,300,000 sharesPercentage of Shares Shorted27.68%Today's Trading Volume431,905 sharesAverage Trading Volume2,506,091 sharesToday's Volume Vs. Average17% Short Selling SELLAS Life Sciences Group? Sign up to receive the latest short interest report for SELLAS Life Sciences Group and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartSLS Short Interest Over TimeSLS Days to Cover Over TimeSLS Percentage of Float Shorted Over Time SELLAS Life Sciences Group Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/15/202529,150,000 shares $47.51 million +10.4%N/A10.7 $1.63 7/31/202526,410,000 shares $41.99 million -4.8%26.8%9.1 $1.59 7/15/202527,740,000 shares $52.71 million +13.9%N/A9.1 $1.90 6/30/202524,360,000 shares $53.35 million +28.9%24.8%8.8 $2.19 6/15/202518,900,000 shares $31.37 million +54.7%19.2%8.6 $1.66 5/31/202512,220,000 shares $20.65 million +39.5%17.6%6.4 $1.69 5/15/20258,760,000 shares $14.02 million +13.6%12.6%5.1 $1.60 4/30/20257,710,000 shares $11.95 million -0.8%N/A5.4 $1.55 4/15/20257,770,000 shares $10.02 million -5.0%11.2%3.2 $1.29 3/31/20258,180,000 shares $8.83 million +4.2%11.8%3.3 $1.08 Get the Latest News and Ratings for SLS and Related StocksEnter your email address below to receive the latest news and analysts' ratings for SELLAS Life Sciences Group and its competitors with MarketBeat's FREE daily newsletter. 3/15/20257,850,000 shares $8.95 million +0.5%11.3%3.2 $1.14 2/28/20257,810,000 shares $9.22 million -9.7%11.2%2.9 $1.18 2/15/20258,650,000 shares $11.42 million -11.8%12.4%3.2 $1.32 1/31/20259,810,000 shares $15.89 million +9.0%N/A3.7 $1.62 1/15/20259,000,000 shares $8.73 million +12.9%N/A4.4 $0.97 12/31/20247,970,000 shares $8.29 million +6.8%N/A7 $1.04 12/15/20247,460,000 shares $6.51 million -17.6%N/A7.6 $0.87 11/30/20249,050,000 shares $10.23 million +3.2%N/A11.2 $1.13 11/15/20248,770,000 shares $11.58 million +1.9%N/A14.3 $1.32 10/31/20248,610,000 shares $10.16 million +41.6%N/A16.1 $1.18 10/15/20246,080,000 shares $7.30 million -25.7%N/A10.2 $1.20 9/30/20248,180,000 shares $10.23 million +0.3%N/A13 $1.25 9/15/20248,160,000 shares $10.77 million -0.7%N/A12.4 $1.32 8/31/20248,220,000 shares $10.60 million +6.5%N/A9.2 $1.29 8/15/20247,720,000 shares $9.80 million -27.5%N/A8.4 $1.27 7/31/202410,650,000 shares $12.35 million +9.6%N/A11 $1.16 7/15/20249,720,000 shares $10.59 million +9.7%N/A8.3 $1.09 6/30/20248,860,000 shares $10.54 million +17.4%N/A7.2 $1.19 6/15/20247,550,000 shares $11.33 million -1.3%N/A5.2 $1.50 5/31/20247,650,000 shares $10.79 million +5.5%N/A5.3 $1.41 5/15/20247,250,000 shares $10.66 million +3.7%N/A4.7 $1.47 4/30/20246,990,000 shares $8.67 million +23.3%N/A4.6 $1.24 4/15/20245,670,000 shares $7.54 million +7.6%N/A4 $1.33 3/31/20245,270,000 shares $5.32 million +1.7%N/A3.6 $1.01 3/15/20245,180,000 shares $5.70 million +14.9%N/A3.7 $1.10 2/29/20244,510,000 shares $4.56 million +15.9%N/A4.2 $1.01 2/15/20243,890,000 shares $2.74 million +24.7%N/A3.7 $0.70 1/31/20243,120,000 shares $2.00 million -19.6%N/A3.1 $0.64 1/15/20243,880,000 shares $2.07 million -18.0%N/A4.3 $0.53 12/31/20234,730,000 shares $5.01 million +1.5%N/A4.9 $1.06 12/15/20234,660,000 shares $5.36 million +1.1%N/A6.3 $1.15 11/30/20234,610,000 shares $4.79 million +0.7%N/A7.3 $1.04 11/15/20234,580,000 shares $4.44 million +50.2%N/A8.7 $0.97 10/31/20233,050,000 shares $2.96 million +49.5%N/A6.6 $0.97 10/15/20232,040,000 shares $2.65 million +87.2%N/A6.5 $1.30 9/30/20231,090,000 shares $1.79 million +6.9%N/A7.7 $1.64 9/15/20231,020,000 shares $1.64 million -9.7%N/A8.1 $1.61 8/31/20231,130,000 shares $1.66 million No ChangeN/A8.9 $1.47 8/15/20231,130,000 shares $1.68 million -4.2%N/A8.7 $1.49 7/31/20231,180,000 shares $1.94 million +2.6%N/A8.2 $1.64 7/15/20231,150,000 shares $1.97 million -0.9%N/A7.4 $1.71 6/30/20231,160,000 shares $1.82 million +3.6%N/A6.8 $1.57 6/15/20231,120,000 shares $1.86 million -5.9%N/A5.4 $1.66 5/31/20231,190,000 shares $2.04 million -4.8%N/A4.8 $1.72 5/15/20231,250,000 shares $2.05 million +4.2%N/A2.7 $1.64 4/30/20231,200,000 shares $1.69 million +1.7%N/A2.6 $1.41 4/15/20231,180,000 shares $1.89 million +7.3%N/A2.6 $1.60 3/31/20231,100,000 shares $1.57 million -9.8%N/A2.4 $1.43 3/15/20231,220,000 shares $1.68 million -5.4%N/A3 $1.38 2/28/20231,290,000 shares $2.18 million +7.5%N/A3.5 $1.69 2/15/20231,200,000 shares $3.79 million +2.6%N/A4.1 $3.16 1/31/20231,170,000 shares $3.88 million -2.5%N/A4.5 $3.32 1/15/20231,200,000 shares $3.41 million -3.2%N/A3.6 $2.84 12/30/20221,240,000 shares $2.93 million +0.8%N/A3.3 $2.36 12/15/20221,230,000 shares $2.85 million +1.7%N/A3.4 $2.32 11/30/20221,210,000 shares $2.89 million +5.2%N/A3.3 $2.39 11/15/20221,150,000 shares $2.58 million +15.4%N/A3.3 $2.24 10/31/2022996,800 shares $4.67 million +21.3%N/A3.8 $4.68 10/15/2022822,000 shares $1.57 million -0.9%N/A4.5 $1.91 9/30/2022829,600 shares $1.68 million -0.7%N/A8.3 $2.02 9/15/2022835,100 shares $2.51 million +0.1%N/A7.8 $3.00 8/31/2022834,400 shares $2.55 million -6.1%N/A7.1 $3.06 8/15/2022888,700 shares $2.88 million +5.9%N/A6.6 $3.24 7/31/2022838,900 shares $2.15 million -2.3%N/A5.4 $2.56 7/15/2022858,900 shares $2.16 million -4.1%N/A5.3 $2.52 6/30/2022895,600 shares $2.00 million -0.3%N/A4.7 $2.23 6/15/2022897,800 shares $2.22 million +6.0%N/A3 $2.47 5/31/2022847,000 shares $2.58 million -10.1%N/A3 $3.05 5/15/2022942,500 shares $2.51 million +8.6%N/A3.4 $2.66 4/30/2022867,800 shares $2.36 million -5.2%N/A3.5 $2.72 4/15/2022915,500 shares $3.22 million -8.5%N/A3.5 $3.52 3/31/20221,000,000 shares $6.68 million No ChangeN/A4 $6.68 3/15/20221,000,000 shares $5.38 million +1.2%N/A7.3 $5.38 2/28/2022988,000 shares $6.03 million -1.1%N/A7 $6.10 2/15/2022999,200 shares $6.48 million +1.3%N/A7.1 $6.49 1/31/2022986,700 shares $5.27 million +15.4%N/A5.8 $5.34 1/15/2022854,700 shares $4.73 million +10.0%N/A5.6 $5.53 12/31/2021776,800 shares $4.30 million -2.4%N/A5.1 $5.53 12/15/2021796,100 shares $5.10 million +9.6%N/A5.1 $6.40 11/30/2021726,200 shares $4.89 million +11.8%N/A4.4 $6.74 11/15/2021649,600 shares $4.85 million -3.5%N/A3.7 $7.47 10/29/2021672,900 shares $5.85 million -22.1%N/A3.7 $8.69 10/15/2021863,200 shares $7.62 million +4.1%N/A4.3 $8.83 9/30/2021829,200 shares $7.60 million +7.2%N/A3.6 $9.16 9/15/2021773,700 shares $7.78 million -14.2%N/A1.7 $10.05 8/31/2021901,200 shares $8.37 million -23.6%N/A1.8 $9.29 8/13/20211,180,000 shares $11.88 million No ChangeN/A2 $10.07 7/30/20211,180,000 shares $10.10 million +4.4%N/A2 $8.56 7/15/20211,130,000 shares $9.75 million +28.9%N/A1.9 $8.63 6/30/2021876,900 shares $9.73 million +27.3%N/A1.5 $11.10 6/15/2021688,900 shares $7.89 million -10.9%N/A1.4 $11.45 5/28/2021773,400 shares $9.25 million -15.2%N/A1.5 $11.96 5/14/2021911,600 shares $0.00 +1.2%6.1%1.7 $0.00 4/30/2021901,100 shares $7.22 million -4.2%6.1%1.4 $8.01 4/15/2021940,100 shares $7.76 million +20.2%6.3%0.5 $8.25 3/31/2021782,300 shares $6.27 million -8.2%5.3%0.4 $8.02 3/15/2021852,100 shares $8.74 million +5.9%6.1%0.4 $10.26 2/26/2021805,000 shares $6.74 million -16.2%5.8%0.1 $8.37 2/12/2021960,400 shares $8.85 million +5.2%6.9%0.2 $9.21 1/29/2021912,700 shares $5.02 million +43.4%8.1%0.2 $5.50 1/15/2021636,300 shares $3.85 million -15.4%5.6%0.2 $6.05 12/31/2020752,000 shares $4.39 million -40.3%6.7%0.2 $5.84 12/15/20201,260,000 shares $8.43 million +127.5%11.3%0.3 $6.69 11/30/2020553,900 shares $2.06 million +51.1%6.2%1.3 $3.72 11/15/2020366,600 shares $964.16 thousand -11.1%4.1%2.3 $2.63 10/30/2020412,200 shares $1.08 million -0.1%4.6%2.9 $2.63 10/15/2020412,500 shares $1.10 million -1.6%4.6%2.1 $2.66 SLS Short Interest - Frequently Asked Questions What is SELLAS Life Sciences Group's current short interest? Short interest is the volume of SELLAS Life Sciences Group shares that have been sold short but have not yet been covered or closed out. As of August 15th, traders have sold 29,150,000 shares of SLS short. Learn More on SELLAS Life Sciences Group's current short interest. What is a good short interest ratio for SELLAS Life Sciences Group? 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. SLS shares currently have a short interest ratio of 11.0. Learn More on SELLAS Life Sciences Group's short interest ratio. Which institutional investors are shorting SELLAS Life Sciences Group? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of SELLAS Life Sciences Group: Group One Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is SELLAS Life Sciences Group's short interest increasing or decreasing? SELLAS Life Sciences Group saw a increase in short interest in the month of August. As of August 15th, there was short interest totaling 29,150,000 shares, an increase of 10.4% from the previous total of 26,410,000 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. How does SELLAS Life Sciences Group's short interest compare to its competitors? Here is how the short interest of companies in the industry of "pharmaceutical products" compare to SELLAS Life Sciences Group: Niagen Bioscience, Inc. (4.29%), Gyre Therapeutics, Inc. (10.93%), Dianthus Therapeutics, Inc. (25.54%), Oculis Holding AG (0.12%), Mind Medicine (MindMed) Inc. (14.19%), Nurix Therapeutics, Inc. (16.85%), Tango Therapeutics, Inc. (40.11%), Ginkgo Bioworks Holdings, Inc. (17.53%), Day One Biopharmaceuticals, Inc. (15.68%), ProKidney Corp. (8.75%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks. What does it mean to sell short SELLAS Life Sciences Group stock? Short selling SLS is an investing strategy that aims to generate trading profit from SELLAS Life Sciences Group as its price is falling. SLS shares are trading up $0.03 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 SELLAS Life Sciences Group? A short squeeze for SELLAS Life Sciences Group 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 SLS, which in turn drives the price of the stock up even further. How often is SELLAS Life Sciences Group'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 SLS, twice per month. The most recent reporting period available is August, 15 2025. 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