Moleculin Biotech (MBRX) Short Interest Ratio & Short Volume $0.97 -0.01 (-1.01%) Closing price 05/21/2025 04:00 PM EasternExtended Trading$0.99 +0.02 (+2.16%) As of 06:25 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 ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Moleculin Biotech Short Interest DataMoleculin Biotech (MBRX) has a short interest of 725,100 shares, representing 5.18% of the float (the number of shares available for trading by the public). This marks a 55.87% increase in short interest from the previous month. The short interest ratio (days to cover) is 0.1, indicating that it would take 0.1 days of the average trading volume of 1.46 million shares to cover all short positions.Current Short Interest725,100 sharesPrevious Short Interest465,200 sharesChange Vs. Previous Month+55.87%Dollar Volume Sold Short$768,606.00Short Interest Ratio0.1 Days to CoverLast Record DateApril 30, 2025Outstanding Shares14,127,000 sharesFloat Size14,010,000 sharesShort Percent of Float5.18%Today's Trading Volume100,148 sharesAverage Trading Volume1,459,673 sharesToday's Volume Vs. Average7% Short Selling Moleculin Biotech? Sign up to receive the latest short interest report for Moleculin Biotech and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartMBRX Short Interest Over TimeMBRX Days to Cover Over TimeMBRX Percentage of Float Shorted Over Time Moleculin Biotech Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/2025725,100 shares $768,606.00 +55.9%5.2%0.1 $1.06 4/15/2025465,200 shares $394,954.80 -18.7%3.3%0.1 $0.85 3/31/2025572,100 shares $554,937.00 +23.4%4.1%0.1 $0.97 3/15/2025463,600 shares $523,868.00 -57.1%3.3%0.1 $1.13 2/28/20251,080,000 shares $1.39 million -50.9%8.4%0.2 $1.29 2/15/20252,200,000 shares $4.80 million +1,169.5%54.6%0.4 $2.18 1/31/2025173,300 shares $261,683.00 +2.0%5.3%1.3 $1.51 1/15/2025169,900 shares $307,519.00 +106.9%5.5%3.2 $1.81 12/31/202482,100 shares $139,570.00 +139.4%2.7%1.6 $1.70 12/15/202434,300 shares $79,576.00 +65.7%1.1%0.7 $2.32 Get the Latest News and Ratings for MBRX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Moleculin Biotech and its competitors with MarketBeat's FREE daily newsletter. 11/30/202420,700 shares $57,339.00 -61.7%0.7%0.5 $2.77 11/15/202454,100 shares $146,611.00 -55.8%1.9%1.3 $2.71 10/31/2024122,400 shares $318,240.00 -28.6%4.5%3.8 $2.60 10/15/2024171,500 shares $399,595.00 +0.4%6.3%4.2 $2.33 9/30/2024170,900 shares $485,356.00 +36.5%6.2%4.3 $2.84 9/15/2024125,200 shares $304,236.00 +17.0%4.6%3.4 $2.43 8/31/2024107,000 shares $272,850.00 +108.6%3.9%3.3 $2.55 8/15/202451,300 shares $114,399.00 +83.9%1.9%1.6 $2.23 7/31/202427,900 shares $87,885.00 +30.4%1.1%1 $3.15 7/15/202421,400 shares $90,308.00 -28.7%1.0%1 $4.22 6/30/202430,000 shares $105,600.00 +31.0%1.4%1.4 $3.52 6/15/202422,900 shares $94,806.00 +8.5%1.0%0.6 $4.14 5/31/202421,100 shares $100,647.00 -38.3%1.0%0.5 $4.77 5/15/202434,200 shares $168,264.00 +10.0%1.5%0.9 $4.92 4/30/202431,100 shares $156,122.00 +16.5%1.5%0.8 $5.02 4/15/202426,700 shares $119,082.00 -40.7%1.2%0.8 $4.46 3/31/202445,000 shares $265,950.00 +2,042.9%2.1%1.4 $5.91 3/15/20242,100 shares $15,576.75 -98.4%0.1%0.1 $7.42 2/29/2024134,400 shares $84,537.60 -2.4%N/A0.8 $0.63 2/15/2024137,700 shares $68,850.00 -37.4%N/A0.9 $0.50 1/31/2024220,000 shares $110,880.00 -8.5%N/A1.2 $0.50 1/15/2024240,300 shares $170,613.00 -23.8%N/A1.3 $0.71 12/31/2023315,300 shares $270,653.52 -7.5%N/A1.6 $0.86 12/15/2023340,800 shares $197,664.00 +35.3%N/A2.1 $0.58 11/30/2023251,900 shares $150,812.53 -15.2%N/A1.7 $0.60 11/15/2023296,900 shares $169,233.00 +59.7%N/A1.9 $0.57 10/31/2023185,900 shares $90,012.78 +131.8%N/A1.5 $0.48 10/15/202380,200 shares $36,090.00 -55.3%N/A0.7 $0.45 9/30/2023179,300 shares $76,650.75 +260.0%N/A1.2 $0.43 9/15/202349,800 shares $19,770.60 +30.7%N/A0.3 $0.40The Prophet's Newest Prediction (Ad)A storm is brewing in the markets: new tariffs, recession warnings, and panic in the headlines. That’s when publisher Brett Aitken turns to Whitney Tilson—a man CNBC once dubbed “The Prophet.” Tilson just released a new prediction that runs counter to what mainstream finance is telling you.Market chaos? Hear Tilson’s take now 8/31/202338,100 shares $21,336.00 -75.4%N/A0.2 $0.56 8/15/2023155,100 shares $94,455.90 +15.6%N/A1 $0.61 7/31/2023134,200 shares $84,975.44 +42.6%N/A0.7 $0.63 7/15/202394,100 shares $59,283.00 -20.8%N/A0.5 $0.63 6/30/2023118,800 shares $68,761.44 +611.4%N/A0.4 $0.58 6/15/202316,700 shares $9,853.00 +108.8%N/A0.1 $0.59 5/31/20238,000 shares $5,068.00 -59.4%N/A0 $0.63 5/15/202319,700 shares $12,139.14 +20.9%N/A0.1 $0.62 4/30/202316,300 shares $12,180.99 -30.3%0.1%0.1 $0.75 4/15/202323,400 shares $21,294.00 -14.6%0.1%0.1 $0.91 3/31/202327,400 shares $26,304.00 -26.3%0.1%0.4 $0.96 3/15/202337,200 shares $35,340.00 -13.9%0.1%0.5 $0.95 2/28/202343,200 shares $52,272.00 -30.1%0.2%0.5 $1.21 2/15/202361,800 shares $80,340.00 +56.9%0.2%0.7 $1.30 1/31/202339,400 shares $49,640.06 -49.0%0.1%0.4 $1.26 1/15/202377,200 shares $100,360.00 -34.9%0.3%0.8 $1.30 12/30/2022118,600 shares $125,716.00 +48.3%0.4%1.2 $1.06 12/15/202280,000 shares $110,400.00 -9.7%0.3%0.8 $1.38 11/30/202288,600 shares $127,584.00 +30.3%0.3%0.9 $1.44 11/15/202268,000 shares $64,593.20 +32.0%0.2%0.6 $0.95 10/31/202251,500 shares $51,500.00 -9.8%0.2%0.5 $1.00 10/15/202257,100 shares $57,100.00 -5.3%0.2%0.6 $1.00 9/30/202260,300 shares $63,918.00 -36.4%0.2%0.6 $1.06 9/15/202294,800 shares $134,616.00 -40.0%0.3%1 $1.42 8/31/2022158,100 shares $233,988.00 +59.2%0.6%2 $1.48 8/15/202299,300 shares $178,740.00 +85.6%0.4%2 $1.80 7/31/202253,500 shares $90,415.00 -54.7%0.2%1 $1.69 7/15/2022118,200 shares $195,467.34 +25.5%0.4%2 $1.65 6/30/202294,200 shares $136,590.00 -37.9%0.3%1.4 $1.45 6/15/2022151,600 shares $210,724.00 -39.0%0.5%1.9 $1.39 5/31/2022248,500 shares $372,750.00 +31.0%0.9%2.9 $1.50 5/15/2022189,700 shares $235,228.00 -37.0%0.7%1.9 $1.24 4/30/2022301,000 shares $478,590.00 -28.0%1.1%2.8 $1.59 4/15/2022418,300 shares $836,600.00 +0.6%1.5%3.5 $2.00 3/31/2022415,900 shares $740,302.00 -4.7%1.5%3.4 $1.78 3/15/2022436,400 shares $554,228.00 -9.6%1.6%2.4 $1.27 2/28/2022482,500 shares $670,675.00 +9.2%1.8%2.4 $1.39 2/15/2022441,900 shares $645,174.00 -9.9%1.7%1.8 $1.46 1/31/2022490,200 shares $740,202.00 -7.8%1.8%1.9 $1.51 1/15/2022531,600 shares $909,036.00 +2.0%2.0%1.9 $1.71 12/31/2021521,100 shares $969,246.00 -11.0%1.9%1.8 $1.86 12/15/2021585,400 shares $1.22 million +2.2%2.2%2.3 $2.08 11/30/2021572,600 shares $1.19 million -8.7%2.1%2.4 $2.07 11/15/2021626,800 shares $1.49 million -3.3%2.3%3.2 $2.38 10/29/2021648,000 shares $1.71 million -6.1%2.4%3.5 $2.64 10/15/2021690,400 shares $1.87 million +3.6%2.6%4 $2.71 9/30/2021666,700 shares $2.00 million -6.3%2.5%3.8 $3.00 9/15/2021711,400 shares $2.07 million -5.6%2.7%3.7 $2.91 8/31/2021753,900 shares $2.32 million +5.4%2.8%3.5 $3.08 8/13/2021715,200 shares $2.12 million -7.3%2.7%2.9 $2.97The Prophet's Newest Prediction (Ad)A storm is brewing in the markets: new tariffs, recession warnings, and panic in the headlines. That’s when publisher Brett Aitken turns to Whitney Tilson—a man CNBC once dubbed “The Prophet.” Tilson just released a new prediction that runs counter to what mainstream finance is telling you.Market chaos? Hear Tilson’s take now 7/30/2021771,800 shares $2.41 million -18.8%2.9%2.9 $3.12 7/15/2021949,900 shares $3.25 million -1.0%3.6%3.3 $3.42 6/30/2021959,300 shares $3.52 million +17.8%3.6%1.7 $3.67 6/15/2021814,600 shares $3.08 million -13.8%3.1%0.7 $3.78 5/28/2021944,700 shares $3.50 million -14.9%3.5%0.8 $3.70 5/14/20211,110,000 shares $3.63 million -4.3%4.2%0.9 $3.27 4/30/20211,160,000 shares $4.21 million +26.7%4.4%0.7 $3.63 4/15/2021915,500 shares $3.38 million +78.0%3.4%0.3 $3.69 3/31/2021514,200 shares $2.19 million +70.9%1.9%0.2 $4.25 3/15/2021300,800 shares $1.34 million -50.1%1.1%0.1 $4.44 2/26/2021602,500 shares $2.62 million +44.7%2.6%0.3 $4.35 2/12/2021416,500 shares $2.23 million -84.9%1.8%0.2 $5.36 1/29/20212,760,000 shares $16.06 million +8.2%12.6%1.4 $5.82 1/15/20212,550,000 shares $15.45 million +4.9%N/A1 $6.06 12/31/20202,430,000 shares $12.17 million +4.7%N/A1.2 $5.01 12/15/20202,320,000 shares $10.75 million -0.4%N/A1.6 $4.63 11/30/20202,330,000 shares $10.82 million -7.2%N/A1.7 $4.64 11/15/20202,510,000 shares $11.58 million -3.5%N/A5 $4.61 10/30/20202,600,000 shares $11.23 million -11.3%N/A4.9 $4.32 10/15/20202,930,000 shares $14.29 million -5.5%N/A4.1 $4.88 9/30/20203,100,000 shares $15.12 million +2.0%N/A1 $4.88 9/15/20203,040,000 shares $14.85 million -10.3%N/A1 $4.88 8/31/20203,390,000 shares $17.83 million -7.6%N/A1.1 $5.26 8/14/20203,670,000 shares $21.58 million -5.4%N/A1.1 $5.88 7/31/20203,880,000 shares $26.77 million +19.0%N/A1.2 $6.90 7/15/20203,260,000 shares $20.93 million -11.7%N/A1 $6.42 6/30/20203,690,000 shares $21.43 million -13.2%N/A0.7 $5.81 6/15/20204,250,000 shares $28.56 million -3.2%N/A0.8 $6.72 5/29/20204,390,000 shares $28.71 million +8.7%N/A0.7 $6.54 MBRX Short Interest - Frequently Asked Questions What is Moleculin Biotech's current short interest? Short interest is the volume of Moleculin Biotech shares that have been sold short but have not yet been covered or closed out. As of April 30th, investors have sold 725,100 shares of MBRX short. 5.18% of Moleculin Biotech's shares are currently sold short. Learn More on Moleculin Biotech's current short interest. What is a good short interest percentage for Moleculin Biotech? 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. 5.18% of Moleculin Biotech's floating shares are currently sold short. Is Moleculin Biotech's short interest increasing or decreasing? Moleculin Biotech saw a increase in short interest in April. As of April 30th, there was short interest totaling 725,100 shares, an increase of 55.9% from the previous total of 465,200 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 Moleculin Biotech's float size? Moleculin Biotech currently has issued a total of 14,127,000 shares. Some of Moleculin Biotech'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. Moleculin Biotech currently has a public float of 14,010,000 shares. How does Moleculin Biotech's short interest compare to its competitors? 5.18% of Moleculin Biotech's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Moleculin Biotech: Immuneering Co. (3.34%), OKYO Pharma Limited (0.74%), Ikena Oncology, Inc. (0.93%), Cue Biopharma, Inc. (1.15%), Prelude Therapeutics Incorporated (3.60%), Celularity Inc. (12.21%), Shattuck Labs, Inc. (3.97%), Werewolf Therapeutics, Inc. (6.49%), Renovaro Inc. (6.45%), ImmuCell Co. (0.11%), 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 Moleculin Biotech stock? Short selling MBRX is an investing strategy that aims to generate trading profit from Moleculin Biotech as its price is falling. MBRX shares are trading down $0.01 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 Moleculin Biotech? A short squeeze for Moleculin Biotech occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of MBRX, which in turn drives the price of the stock up even further. How often is Moleculin Biotech'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 MBRX, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies Immuneering Short Squeeze OKYO Pharma Short Squeeze Ikena Oncology Short Squeeze Cue Biopharma Short Squeeze Prelude Therapeutics Short Squeeze Celularity Short Squeeze Shattuck Labs Short Squeeze Werewolf Therapeutics Short Squeeze Renovaro Short Squeeze ImmuCell 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:MBRX) was last updated on 5/22/2025 by MarketBeat.com Staff From Our PartnersJuly 2025 Rule Change to Impact Retirement InvestorsThere's a massive change from a new rule going into effect this July. And it's one the Big Banks are alread...Premier Gold Co | SponsoredA new financial chapter Porter Stansberry says what happened last week could become the defining legacy of his financial publishing ca...Porter & Company | SponsoredEveryone’s watching Nvidia right now. 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