Mustang Bio (MBIO) Short Interest Ratio & Short Volume $1.51 -0.03 (-1.95%) Closing price 04:00 PM EasternExtended Trading$1.52 +0.00 (+0.33%) As of 04:13 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 AnalysisChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Mustang Bio Short Interest DataMustang Bio (MBIO) has a short interest of 135,500 shares, representing 4.30% of the float (the number of shares available for trading by the public). This marks a -63.28% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.0, indicating that it would take 0.0 days of the average trading volume of 2.51 million shares to cover all short positions.Current Short Interest135,500 sharesPrevious Short Interest369,000 sharesChange Vs. Previous Month-63.28%Dollar Volume Sold Short$207.32 thousandShort Interest Ratio0.0 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares7,240,000 sharesFloat Size3,150,000 sharesShort Percent of Float4.30%Today's Trading Volume166,674 sharesAverage Trading Volume2,509,864 sharesToday's Volume Vs. Average7% Short Selling Mustang Bio? Sign up to receive the latest short interest report for Mustang Bio 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 ChartMBIO Short Interest Over TimeMBIO Days to Cover Over TimeMBIO Percentage of Float Shorted Over Time Mustang Bio Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/2025135,500 shares $207.32 thousand -63.3%4.3%0 $1.53 7/15/2025369,000 shares $881.91 thousand +33,445.5%11.7%0.1 $2.39 6/30/20251,100 shares $1.05 thousand -71.8%0.0%0 $0.96 6/15/20253,900 shares $4.56 thousand -96.0%0.1%0 $1.17 5/31/202597,100 shares $126.23 thousand +65.1%3.3%0.2 $1.30 5/15/202558,800 shares $66.44 thousand -70.5%1.9%0.1 $1.13 4/30/2025199,300 shares $217.24 thousand +228.3%10.2%0.5 $1.09 4/15/202560,700 shares $82.55 thousand +0.5%3.1%0.1 $1.36 3/31/202560,400 shares $75.50 thousand +37.3%3.1%0.3 $1.25 3/15/202544,000 shares $62.04 thousand -52.0%2.8%0.1 $1.41 Get the Latest News and Ratings for MBIO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Mustang Bio and its competitors with MarketBeat's FREE daily newsletter. 2/28/202591,700 shares $183.40 thousand -22.4%6.4%0.3 $2.00 2/15/2025118,200 shares $330.96 thousand -7.0%8.2%0.4 $2.80 1/31/2025127,100 shares $549.07 thousand +243.5%11.4%0.5 $4.32 1/15/202537,000 shares $232.36 thousand -89.5%3.3%0.2 $6.28 12/31/2024353,500 shares $62.57 thousand -4.7%0.9%0 $0.18 12/15/2024371,100 shares $71.73 thousand +46.5%0.8%0.2 $0.19 11/30/2024253,400 shares $50.68 thousand -40.4%0.6%0.1 $0.20 11/15/2024424,900 shares $97.00 thousand -20.5%1.0%0.2 $0.23 10/31/2024534,200 shares $149.58 thousand +6.4%1.6%0.3 $0.28 10/15/2024502,000 shares $109.59 thousand +31.4%1.5%0.3 $0.22 9/30/2024382,100 shares $89.91 thousand -41.8%1.1%0.3 $0.24 9/15/2024656,400 shares $177.23 thousand +1.3%2.0%0.2 $0.27 8/31/2024647,700 shares $182.13 thousand -60.0%1.9%0 $0.28 8/15/20241,620,000 shares $607.99 thousand +50.0%4.8%0.1 $0.38 7/31/20241,080,000 shares $362.66 thousand -15.0%3.4%0 $0.34 7/15/20241,270,000 shares $502.92 thousand -57.1%4.0%0 $0.40 6/30/20242,960,000 shares $1.40 million +334.7%9.4%0.1 $0.47 6/15/2024681,000 shares $88.53 thousand -70.8%3.0%0 $0.13 5/31/20242,330,000 shares $468.80 thousand +842.6%10.9%0.7 $0.20 5/15/2024247,200 shares $68.47 thousand +200.7%2.7%0.2 $0.28 4/30/202482,200 shares $20.39 thousand -39.8%0.9%0.3 $0.25 4/15/2024136,500 shares $51.19 thousand -23.3%1.8%0.7 $0.38 3/31/2024178,000 shares $185.12 thousand -54.2%2.4%1.2 $1.04 3/15/2024389,000 shares $369.55 thousand +828.4%5.1%2.7 $0.95 2/29/202441,900 shares $56.57 thousand -1.9%0.6%0.3 $1.35 2/15/202442,700 shares $55.94 thousand -15.6%0.6%0.8 $1.31 1/31/202450,600 shares $72.86 thousand +58.6%0.7%0.8 $1.44 1/15/202431,900 shares $46.57 thousand -53.0%0.4%0.3 $1.46 12/31/202367,800 shares $91.53 thousand -18.2%1.0%0.7 $1.35 12/15/202382,900 shares $114.40 thousand -4.5%1.2%0.8 $1.38A Major Economic Change Is Happening Now (Ad)Louis Navellier is one of Wall Street’s most respected money managers — overseeing more than $7 billion and earning a reputation for fact-based analysis, not sensationalism. That’s why his latest economic warning is turning so many heads. In his new report, Louis reveals how recent policies are accelerating a massive economic shift. While headlines point to strong numbers, everyday Americans feel the squeeze as prices climb and industries are reshaped. According to Louis, this transformation could determine who falls behind — and who builds lasting wealth.Read Louis Navellier’s urgent report here 11/30/202386,800 shares $124.99 thousand +15.9%1.4%1 $1.44 11/15/202374,900 shares $121.34 thousand -59.9%1.2%1 $1.62 10/31/2023186,700 shares $306.19 thousand +571.6%2.7%2.5 $1.64 10/15/202327,800 shares $46.43 thousand -53.0%0.5%1.1 $1.67 9/30/202359,200 shares $122.54 thousand +166.7%1.1%2.2 $2.07 9/15/202322,200 shares $55.94 thousand -59.9%0.4%0.7 $2.52 8/31/202355,400 shares $175.62 thousand +60.1%1.0%1.3 $3.17 8/15/202334,600 shares $131.48 thousand -19.9%0.6%0.7 $3.80 7/31/202343,200 shares $224.64 thousand -45.2%0.8%0.9 $5.20 7/15/202378,800 shares $409.76 thousand +47.3%1.5%1.4 $5.20 6/30/202353,500 shares $332.24 thousand -19.3%1.0%0.8 $6.21 6/15/202366,300 shares $484.65 thousand +10.3%1.2%0.9 $7.31 5/31/202360,100 shares $384.04 thousand -38.2%1.1%1 $6.39 5/15/202397,200 shares $422.82 thousand -34.7%1.8%1.9 $4.35 4/30/2023148,900 shares $631.34 thousand +30.6%2.6%3.1 $4.24 4/15/2023114,000 shares $386.46 thousand +850.0%2.0%2.5 $3.39 3/31/202312,000 shares $65.99 thousand -91.7%0.2%0.3 $5.50 3/15/2023144,400 shares $57.53 thousand -45.3%0.2%0.3 $0.40 2/28/2023264,000 shares $145.20 thousand +3.9%0.3%0.5 $0.55 2/15/2023254,200 shares $170.29 thousand -13.0%0.3%0.5 $0.67 1/31/2023292,000 shares $197.86 thousand -8.5%0.4%0.6 $0.68 1/15/2023319,000 shares $202.47 thousand -23.6%0.4%0.6 $0.63 12/30/2022417,700 shares $164.95 thousand +4.4%0.5%0.9 $0.39 12/15/2022400,000 shares $151.20 thousand +61.4%0.5%1.1 $0.38 11/30/2022247,900 shares $125.19 thousand -55.6%0.3%0.7 $0.51 11/15/2022558,300 shares $267.20 thousand -5.7%0.7%1.7 $0.48 10/31/2022591,800 shares $320.52 thousand +33.1%0.7%1.5 $0.54 10/15/2022444,800 shares $208.83 thousand -41.7%0.5%0.8 $0.47 9/30/2022762,400 shares $357.87 thousand +4.1%0.9%1.4 $0.47 9/15/2022732,100 shares $427.77 thousand +2.4%0.9%1 $0.58 8/31/2022714,800 shares $434.24 thousand +25.2%N/A0.8 $0.61 8/15/2022570,900 shares $428.12 thousand -44.6%0.7%0.6 $0.75 7/31/20221,030,000 shares $597.40 thousand +14.6%1.2%1 $0.58 7/15/2022899,000 shares $557.38 thousand -22.5%1.1%0.9 $0.62 6/30/20221,160,000 shares $678.60 thousand -69.6%1.4%1.1 $0.59 6/15/20223,810,000 shares $2.30 million -10.4%4.5%3.4 $0.60 5/31/20224,250,000 shares $2.74 million +9.0%5.0%4.8 $0.65 5/15/20223,900,000 shares $2.70 million +3.2%4.6%4.5 $0.69 4/30/20223,780,000 shares $2.81 million +15.6%4.5%4.1 $0.74 4/15/20223,270,000 shares $2.81 million -14.6%4.0%3.3 $0.86 3/31/20223,830,000 shares $3.87 million -12.8%4.7%3.9 $1.01 3/15/20224,390,000 shares $3.35 million +16.1%5.8%4.5 $0.76 2/28/20223,780,000 shares $3.29 million -1.8%5.0%3.6 $0.87 2/15/20223,850,000 shares $3.93 million +3.2%5.1%3.4 $1.02 1/31/20223,730,000 shares $4.40 million +10.7%5.0%3.3 $1.18 1/15/20223,370,000 shares $5.06 million +13.1%9.9%3 $1.50 12/31/20212,980,000 shares $4.95 million +13.7%8.7%2.8 $1.66 12/15/20212,620,000 shares $4.90 million -3.0%7.7%2.4 $1.87 11/30/20212,700,000 shares $5.45 million -4.6%7.9%2.6 $2.02 11/15/20212,830,000 shares $6.54 million +2.9%8.3%2.9 $2.31A Major Economic Change Is Happening Now (Ad)Louis Navellier is one of Wall Street’s most respected money managers — overseeing more than $7 billion and earning a reputation for fact-based analysis, not sensationalism. That’s why his latest economic warning is turning so many heads. In his new report, Louis reveals how recent policies are accelerating a massive economic shift. While headlines point to strong numbers, everyday Americans feel the squeeze as prices climb and industries are reshaped. According to Louis, this transformation could determine who falls behind — and who builds lasting wealth.Read Louis Navellier’s urgent report here 10/29/20212,750,000 shares $6.16 million -8.6%8.1%2.6 $2.24 10/15/20213,010,000 shares $6.89 million +2.4%8.8%2.9 $2.29 9/30/20212,940,000 shares $7.91 million -3.9%8.6%2.7 $2.69 9/15/20213,060,000 shares $8.32 million -39.6%9.0%2.6 $2.72 8/31/20215,070,000 shares $15.41 million +11.4%15.0%3.7 $3.04 8/13/20214,550,000 shares $12.42 million +15.2%13.5%2.9 $2.73 7/30/20213,950,000 shares $11.42 million +10.0%11.7%2.3 $2.89 7/15/20213,590,000 shares $10.55 million -10.5%10.6%2.1 $2.94 6/30/20214,010,000 shares $13.31 million +3.9%11.9%2.2 $3.32 6/15/20213,860,000 shares $13.78 million -17.5%11.5%2 $3.57 5/28/20214,680,000 shares $15.68 million +4.9%14.0%2.5 $3.35 5/14/20214,460,000 shares $12.04 million +6.2%13.3%2.2 $2.70 4/30/20214,200,000 shares $13.65 million -4.1%12.0%2 $3.25 4/15/20214,380,000 shares $13.93 million +13.8%12.5%1.7 $3.18 3/31/20213,850,000 shares $12.28 million +30.5%11.7%1.3 $3.19 3/15/20212,950,000 shares $10.12 million +9.7%9.0%0.9 $3.43 2/26/20212,690,000 shares $9.28 million -10.0%8.2%0.7 $3.45 2/12/20212,990,000 shares $13.19 million -11.8%9.1%0.8 $4.41 1/29/20213,390,000 shares $14.31 million -18.3%10.3%1 $4.22 1/15/20214,150,000 shares $19.55 million -19.6%12.6%1.3 $4.71 12/31/20205,160,000 shares $20.23 million -0.4%15.6%1.7 $3.92 12/15/20205,180,000 shares $13.99 million +14.1%15.8%2 $2.70 11/30/20204,540,000 shares $15.71 million +2.7%13.8%2.2 $3.46 11/15/20204,420,000 shares $13.48 million +3.0%13.4%2.8 $3.05 10/30/20204,290,000 shares $12.10 million +44.9%13.6%2.8 $2.82 10/15/20202,960,000 shares $9.44 million +33.3%9.4%2 $3.19 9/30/20202,220,000 shares $6.99 million +47.0%7.0%1.7 $3.15 9/15/20201,510,000 shares $5.72 million +39.8%4.8%1.2 $3.79 8/31/20201,080,000 shares $3.53 million +11.8%3.4%0.9 $3.27 MBIO Short Interest - Frequently Asked Questions What is Mustang Bio's current short interest? Short interest is the volume of Mustang Bio shares that have been sold short but have not yet been closed out or covered. As of July 31st, traders have sold 135,500 shares of MBIO short. 4.30% of Mustang Bio's shares are currently sold short. Learn More on Mustang Bio's current short interest. What is a good short interest percentage for Mustang Bio? 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. 4.30% of Mustang Bio's floating shares are currently sold short. Is Mustang Bio's short interest increasing or decreasing? Mustang Bio saw a decrease in short interest in July. As of July 31st, there was short interest totaling 135,500 shares, a decrease of 63.3% from the previous total of 369,000 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 Mustang Bio's float size? Mustang Bio currently has issued a total of 7,240,000 shares. Some of Mustang Bio'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. Mustang Bio currently has a public float of 3,150,000 shares. How does Mustang Bio's short interest compare to its competitors? 4.30% of Mustang Bio's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Mustang Bio: Mural Oncology PLC (2.01%), CASI Pharmaceuticals Inc. (0.93%), Trinity Biotech PLC (2.12%), Kezar Life Sciences, Inc. (9.46%), MIRA Pharmaceuticals, Inc. (3.01%), Tenax Therapeutics, Inc. (9.22%), Dyadic International Inc. (0.37%), Cadrenal Therapeutics, Inc. (2.39%), Reviva Pharmaceuticals Holdings, Inc. (34.18%), Rallybio Corporation (6.57%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short Mustang Bio stock? Short selling MBIO is an investing strategy that aims to generate trading profit from Mustang Bio as its price is falling. MBIO shares are trading down $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 Mustang Bio? A short squeeze for Mustang Bio 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 MBIO, which in turn drives the price of the stock up even further. How often is Mustang Bio'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 MBIO, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies MURA Short Interest Data CASI Short Interest Data TRIB Short Interest Data KZR Short Interest Data MIRA Short Interest Data TENX Short Interest Data DYAI Short Interest Data CVKD Short Interest Data RVPH Short Interest Data RLYB 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:MBIO) was last updated on 8/26/2025 by MarketBeat.com Staff From Our PartnersThink you missed gold’s boom? Think againIf you've been watching gold's historic run and wondering if it's too late… I've got good news. Because the...Investors Alley | SponsoredEveryone’s watching Nvidia right now. Here’s why I’m excited.So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal...Timothy Sykes | SponsoredElon’s BIGGEST warning yet?Tesla's About to Prove Everyone Wrong... Again Back in 2018, when Jeff Brown told everyone to buy Tesla… ...Brownstone Research | SponsoredTake a look at this picture ...A strange investment secret — discovered just a few short weeks before this image was taken — correctly predic...Weiss Ratings | SponsoredFed Decision Warning: How to Protect Your Wealth Before September 30th On September 17th, the Fed faces an impossible choice—and Wall Street insiders are already preparing for the...American Alternative | SponsoredElon Musk’s New TechnologyElon Musk is building something in Memphis that could eclipse even Tesla and SpaceX. At the heart of it is a n...Paradigm Press | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredTrump set to Boost Social Security Checks by 400%?If you're collecting or planning to collect social security... You should see this presentation about Presi...InvestorPlace | 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 Mustang Bio, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Mustang Bio 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. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
MarketBeat All Access