MBX Biosciences (MBX) Short Interest Ratio & Short Volume $16.69 -0.06 (-0.36%) As of 10/3/2025 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsFDA EventsSEC FilingsShort InterestTrendsBuy This Stock MBX Biosciences Short Interest DataMBX Biosciences (MBX) has a short interest of 4.23 million shares, representing 26.11% of the float (the number of shares available for trading by the public). This marks a 10.16% increase in short interest from the previous month. The short interest ratio (days to cover) is 4.5, indicating that it would take 4.5 days of the average trading volume of 2.57 million shares to cover all short positions.Current Short Interest4,230,000 sharesPrevious Short Interest3,840,000 sharesChange Vs. Previous Month+10.16%Dollar Volume Sold Short$45.98 millionShort Interest Ratio4.5 Days to CoverLast Record DateSeptember 15, 2025Outstanding Shares33,590,000 sharesFloat Size16,200,000 sharesShort Percent of Float26.11%Today's Trading Volume1,678,076 sharesAverage Trading Volume2,571,206 sharesToday's Volume Vs. Average65% Short Selling MBX Biosciences? Sign up to receive the latest short interest report for MBX Biosciences 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. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartMBX Short Interest Over TimeMBX Days to Cover Over TimeMBX Percentage of Float Shorted Over Time MBX Biosciences Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 9/15/20254,230,000 shares $45.98 million +10.2%26.1%4.5 $10.87 8/31/20253,840,000 shares $57.95 million No Change23.7%9.8 $15.09 MBX Short Interest - Frequently Asked Questions What is MBX Biosciences' current short interest? Short interest is the volume of MBX Biosciences shares that have been sold short but have not yet been covered or closed out. As of September 15th, traders have sold 4,230,000 shares of MBX short. 26.11% of MBX Biosciences' shares are currently sold short. Learn More on MBX Biosciences' current short interest. What is a good short interest ratio for MBX Biosciences? 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. MBX shares currently have a short interest ratio of 4.0. Learn More on MBX Biosciences's short interest ratio. What is a good short interest percentage for MBX Biosciences? 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. 26.11% of MBX Biosciences' floating shares are currently sold short. Is MBX Biosciences' short interest increasing or decreasing? MBX Biosciences saw a increase in short interest in September. As of September 15th, there was short interest totaling 4,230,000 shares, an increase of 10.2% from the previous total of 3,840,000 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 MBX Biosciences' float size? MBX Biosciences currently has issued a total of 33,590,000 shares. Some of MBX Biosciences' 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. MBX Biosciences currently has a public float of 16,200,000 shares. How does MBX Biosciences' short interest compare to its competitors? 26.11% of MBX Biosciences' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to MBX Biosciences: IDEAYA Biosciences, Inc. (11.73%), Beam Therapeutics Inc. (25.21%), Cidara Therapeutics, Inc. (11.31%), Disc Medicine, Inc. (9.76%), Agios Pharmaceuticals, Inc. (8.63%), Travere Therapeutics, Inc. (13.82%), Belite Bio, Inc. Sponsored ADR (0.62%), Ocular Therapeutix, Inc. (8.78%), 89BIO (10.36%), Arcutis Biotherapeutics, Inc. (13.39%), 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 MBX Biosciences stock? Short selling MBX is an investing strategy that aims to generate trading profit from MBX Biosciences as its price is falling. MBX shares are trading down $0.06 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 MBX Biosciences? A short squeeze for MBX Biosciences 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 MBX, which in turn drives the price of the stock up even further. How often is MBX Biosciences' 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 MBX, twice per month. The most recent reporting period available is September, 15 2025. More Short Interest Resources from MarketBeat Related Companies IDEAYA Biosciences Short Interest Data Beam Therapeutics Short Interest Data Cidara Therapeutics Short Interest Data Disc Medicine Short Interest Data Agios Pharmaceuticals Short Interest Data Travere Therapeutics Short Interest Data Belite Bio Short Interest Data Ocular Therapeutix Short Interest Data 89BIO Short Interest Data Arcutis Biotherapeutics 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:MBX) was last updated on 10/4/2025 by MarketBeat.com Staff From Our PartnersNvidia CEO Makes First Ever Tesla AnnouncementWhile headlines focus on Tesla’s car sales, tech analyst Jeff Brown says the real story is Tesla’s role in a $...Brownstone Research | 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 | SponsoredArizona-made nanochips the new millionaire maker?George Gilder handed President Reagan the first microchip that helped create $6.5 trillion in wealth over the ...Banyan Hill Publishing | SponsoredLost Decade warning – do this nowWith the Magnificent 7 trading at bubble-like valuations, another “Lost Decade” could be looming — but Porter ...Porter & Company | SponsoredThe next biggest bull run in over 50 yearsGold has shattered records, soaring past $3,800 an ounce... 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