bluebird bio (BLUE) Short Interest Ratio & Short Volume $8.35 +0.09 (+1.09%) As of 01/17/2025 04:00 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrends bluebird bio Short Interest Databluebird bio (BLUE) has a short interest of 2.41 million shares, representing 25.00% of the float (the number of shares available for trading by the public). This marks a -6.59% decrease in short interest from the previous month. The short interest ratio (days to cover) is 5.9, indicating that it would take 5.9 days of the average trading volume of 426,810 shares to cover all short positions.Current Short Interest2,410,000 sharesPrevious Short Interest2,580,000 sharesChange Vs. Previous Month-6.59%Dollar Volume Sold Short$20.10 millionShort Interest Ratio5.9 Days to CoverLast Record DateDecember 31, 2024Outstanding Shares9,720,000 sharesFloat Size9,640,000 sharesShort Percent of Float25.00%Today's Trading Volume109,879 sharesAverage Trading Volume426,810 sharesToday's Volume Vs. Average26% Short Selling bluebird bio? Sign up to receive the latest short interest report for bluebird bio and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartBLUE Short Interest Over TimeBLUE Days to Cover Over TimeBLUE Percentage of Float Shorted Over Time bluebird 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 12/31/20242,410,000 shares $20.10 million -6.6%25.0%5.9 $8.34 12/15/20242,580,000 shares $16.36 million -94.8%26.8%6.2 $6.34 11/30/202449,570,000 shares $20.08 million +13.6%N/A6.5 $0.41 11/15/202443,640,000 shares $14.00 million -8.5%N/A6.7 $0.32 10/31/202447,710,000 shares $22.14 million -3.5%N/A6.3 $0.46 10/15/202449,420,000 shares $23.78 million +0.9%N/A6.8 $0.48 9/30/202448,990,000 shares $25.45 million +1.2%N/A6.4 $0.52 9/15/202448,400,000 shares $29.32 million -2.0%N/A6.5 $0.61 8/31/202449,370,000 shares $27.72 million +20.0%N/A6.8 $0.56 8/15/202441,140,000 shares $29.02 million +32.2%N/A6.1 $0.71 Get the Latest News and Ratings for BLUE and Related StocksEnter your email address below to receive the latest news and analysts' ratings for bluebird bio and its competitors with MarketBeat's FREE daily newsletter. 7/31/202431,130,000 shares $36.11 million +1.2%N/A5.6 $1.16 7/15/202430,770,000 shares $40.62 million +0.2%N/A5 $1.32 6/30/202430,710,000 shares $30.22 million +4.2%N/A4.9 $0.98 6/15/202429,480,000 shares $28.29 million +1.2%N/A4.7 $0.96 5/31/202429,120,000 shares $26.31 million -7.9%N/A4.5 $0.90 5/15/202431,600,000 shares $33.81 million -0.8%N/A4 $1.07 4/30/202431,860,000 shares $28.26 million -2.3%N/A3.8 $0.89 4/15/202432,620,000 shares $33.60 million +9.7%N/A3.8 $1.03 3/31/202429,750,000 shares $38.08 million -12.6%N/A3.3 $1.28 3/15/202434,040,000 shares $48.34 million -0.3%N/A3.2 $1.42 2/29/202434,130,000 shares $47.44 million +19.4%N/A2.4 $1.39 2/15/202428,590,000 shares $30.88 million +4.0%N/A2.2 $1.08 1/31/202427,500,000 shares $28.05 million +3.5%N/A2.3 $1.02 1/15/202426,570,000 shares $39.86 million +10.3%N/A2.4 $1.50 12/31/202324,090,000 shares $33.24 million -5.4%N/A2.4 $1.38 12/15/202325,470,000 shares $83.29 million +16.6%N/A2.8 $3.27 11/30/202321,850,000 shares $83.47 million -2.9%N/A4.7 $3.82 11/15/202322,490,000 shares $73.99 million -8.5%N/A6.4 $3.29 10/31/202324,570,000 shares $72.48 million -0.4%N/A7 $2.95 10/15/202324,670,000 shares $65.62 million +2.3%N/A7 $2.66 9/30/202324,110,000 shares $73.29 million -17.0%N/A5.8 $3.04 9/15/202329,040,000 shares $97.28 million +11.5%N/A7 $3.35 8/31/202326,040,000 shares $98.17 million -1.6%N/A6.3 $3.77 8/15/202326,450,000 shares $95.75 million -8.3%N/A6.2 $3.62 7/31/202328,840,000 shares $113.34 million +13.7%N/A6.6 $3.93 7/15/202325,360,000 shares $76.84 million -21.5%N/A5.8 $3.03 6/30/202332,300,000 shares $106.27 million +6.1%N/A8.1 $3.29 6/15/202330,440,000 shares $121.46 million +23.0%N/A6.8 $3.99 5/31/202324,740,000 shares $82.88 million +5.3%N/A5.2 $3.35 5/15/202323,490,000 shares $96.78 million -0.3%N/A5 $4.12Do this Before Elon’s Reveal on January 22nd (Ad)Elon’s newest tech could pay you an extra $30,000 a year — while you sleep. It’s smaller than a quarter but designed to power a $9 trillion AI revolution. And I’ve identified a little-known supplier Elon is depending on to make it all happen.I urge you to watch this video now. 4/30/202323,550,000 shares $102.44 million -0.8%N/A5.3 $4.35 4/15/202323,740,000 shares $74.07 million -10.3%N/A5.5 $3.12 3/31/202326,450,000 shares $84.11 million +29.0%N/A6.1 $3.18 3/15/202320,510,000 shares $95.37 million +12.2%N/A5.4 $4.65 2/28/202318,280,000 shares $95.06 million +5.5%N/A5.4 $5.20 2/15/202317,320,000 shares $102.88 million +0.2%N/A5.1 $5.94 1/31/202317,290,000 shares $109.79 million -6.3%N/A4.7 $6.35 1/15/202318,450,000 shares $145.57 million +1.2%N/A4.9 $7.89 12/30/202218,240,000 shares $126.22 million -1.1%N/A5.3 $6.92 12/15/202218,450,000 shares $143.54 million +1.0%N/A4.6 $7.78 11/30/202218,270,000 shares $142.32 million -5.2%N/A3.3 $7.79 11/15/202219,270,000 shares $148.38 million -14.5%N/A3.2 $7.70 10/31/202222,540,000 shares $141.33 million +0.5%N/A3.1 $6.27 10/15/202222,440,000 shares $143.39 million -1.2%N/A2.9 $6.39 9/30/202222,710,000 shares $143.75 million +13.0%N/A2.9 $6.33 9/15/202220,100,000 shares $142.51 million +1.8%N/A2.4 $7.09 8/31/202219,740,000 shares $115.28 million +19.9%N/A2 $5.84 8/15/202216,460,000 shares $112.42 million +8.4%N/A1.8 $6.83 7/31/202215,190,000 shares $61.52 million +13.3%N/A2 $4.05 7/15/202213,410,000 shares $64.50 million -11.1%N/A2 $4.81 6/30/202215,090,000 shares $62.47 million -13.8%N/A2.3 $4.14 6/15/202217,510,000 shares $60.93 million +39.0%32.1%3.2 $3.48 5/31/202212,600,000 shares $40.32 million +1.9%N/A5.2 $3.20 5/15/202212,370,000 shares $44.16 million +1.8%N/A5.3 $3.57 4/30/202212,150,000 shares $44.10 million +6.6%N/A5.4 $3.63 4/15/202211,400,000 shares $51.76 million -0.7%N/A4.8 $4.54 3/31/202211,480,000 shares $55.68 million +43.7%N/A4.8 $4.85 3/15/20227,990,000 shares $35.72 million +9.2%N/A3.1 $4.47 2/28/20227,320,000 shares $44.21 million +2.0%N/A3.1 $6.04 2/15/20227,180,000 shares $48.68 million +3.2%N/A3.1 $6.78 1/31/20226,960,000 shares $54.91 million +1.0%N/A2.8 $7.89 1/15/20226,890,000 shares $60.15 million +19.0%N/A2.9 $8.73 12/31/20215,790,000 shares $57.84 million +4.3%N/A2.8 $9.99 12/15/20215,550,000 shares $52.78 million -3.3%N/A2.8 $9.51 11/30/20215,740,000 shares $58.03 million +6.3%N/A3.9 $10.11 11/15/20215,400,000 shares $61.99 million +5.9%N/A3.8 $11.48 10/29/20215,100,000 shares $119.39 million -11.5%7.8%3.9 $23.41 10/15/20215,760,000 shares $120.38 million -0.2%8.8%4.9 $20.90 9/30/20215,770,000 shares $110.26 million +10.5%8.8%5.1 $19.11 9/15/20215,220,000 shares $92.92 million -8.6%7.9%3.8 $17.80 8/31/20215,710,000 shares $104.49 million -9.7%8.7%4 $18.30 8/13/20216,320,000 shares $116.73 million +1.1%9.6%4.5 $18.47 7/30/20216,250,000 shares $158.81 million +6.5%9.5%4.4 $25.41 7/15/20215,870,000 shares $161.60 million -7.3%8.9%4.7 $27.53 6/30/20216,330,000 shares $202.43 million +18.3%9.6%4.8 $31.98 6/15/20215,350,000 shares $175.64 million +4.7%8.1%4.1 $32.83 5/28/20215,110,000 shares $159.02 million -13.4%7.7%3.8 $31.12 5/14/20215,900,000 shares $172.93 million -7.1%N/A3.3 $29.31 4/30/20216,350,000 shares $191.96 million -4.4%N/A2.8 $30.23 4/15/20216,640,000 shares $196.15 million -2.1%N/A2.9 $29.54Do this Before Elon’s Reveal on January 22nd (Ad)Elon’s newest tech could pay you an extra $30,000 a year — while you sleep. It’s smaller than a quarter but designed to power a $9 trillion AI revolution. And I’ve identified a little-known supplier Elon is depending on to make it all happen.I urge you to watch this video now. 3/31/20216,780,000 shares $194.04 million +25.3%N/A2.9 $28.62 3/15/20215,410,000 shares $175.45 million -14.7%N/A2.5 $32.43 2/26/20216,340,000 shares $178.28 million +4.1%N/A3.2 $28.12 2/12/20216,090,000 shares $278.74 million +2.4%N/A3.6 $45.77 1/29/20215,950,000 shares $267.75 million -3.1%N/A4.8 $45.00 1/15/20216,140,000 shares $318.36 million -15.0%N/A5.1 $51.85 12/31/20207,220,000 shares $318.47 million +3.9%N/A6.6 $44.11 12/15/20206,950,000 shares $309.62 million +1.6%N/A7 $44.55 11/30/20206,840,000 shares $301.37 million +0.2%N/A7.4 $44.06 11/15/20206,830,000 shares $314.25 million +7.7%N/A7.9 $46.01 10/30/20206,340,000 shares $335.32 million +3.1%N/A7.8 $52.89 10/15/20206,150,000 shares $343.11 million +0.5%N/A9.1 $55.79 9/30/20206,120,000 shares $330.17 million -0.7%N/A8.9 $53.95 9/15/20206,160,000 shares $327.77 million -10.1%N/A7.9 $53.21 8/31/20206,850,000 shares $406.21 million -0.3%N/A8 $59.30 8/14/20206,870,000 shares $409.93 million -2.1%N/A7.3 $59.67 7/31/20207,020,000 shares $426.11 million +0.7%N/A5.8 $60.70 7/15/20206,970,000 shares $459.39 million -5.2%N/A5.2 $65.91 6/30/20207,350,000 shares $448.64 million -2.7%N/A4.9 $61.04 6/15/20207,550,000 shares $479.73 million -0.5%N/A5.1 $63.54 5/29/20207,590,000 shares $482.95 million -1.0%N/A5.2 $63.63 5/15/20207,670,000 shares $434.58 million +3.4%13.9%5.3 $56.66 4/30/20207,420,000 shares $399.79 million -2.2%13.5%6.2 $53.88 4/15/20207,590,000 shares $359.54 million -0.9%13.8%6.9 $47.37 3/31/20207,660,000 shares $448.72 million -1.0%13.9%7.5 $58.58 3/13/20207,736,600 shares $359.75 million -3.7%14.1%10.1 $46.50 2/28/20208,030,000 shares $380.94 million -1.1%14.6%7.4 $47.44 2/14/20208,120,000 shares $537.30 million -2.5%N/A6.9 $66.17 1/31/20208,330,000 shares $605.59 million -2.6%15.2%6.7 $72.70 BLUE Short Interest - Frequently Asked Questions What is bluebird bio's current short interest? Short interest is the volume of bluebird bio shares that have been sold short but have not yet been covered or closed out. As of December 31st, traders have sold 2,410,000 shares of BLUE short. 25.00% of bluebird bio's shares are currently sold short. Learn More on bluebird bio's current short interest. What is a good short interest ratio for bluebird bio? 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. BLUE shares currently have a short interest ratio of 6.0. Learn More on bluebird bio's short interest ratio. What is a good short interest percentage for bluebird 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. 25.00% of bluebird bio's floating shares are currently sold short. Is bluebird bio's short interest increasing or decreasing? bluebird bio saw a decline in short interest in the month of December. As of December 31st, there was short interest totaling 2,410,000 shares, a decline of 6.6% from the previous total of 2,580,000 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 bluebird bio's float size? bluebird bio currently has issued a total of 9,720,000 shares. Some of bluebird 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. bluebird bio currently has a public float of 9,640,000 shares. How does bluebird bio's short interest compare to its competitors? 25.00% of bluebird bio's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to bluebird bio: Corvus Pharmaceuticals, Inc. (8.45%), Taysha Gene Therapies, Inc. (12.63%), Precigen, Inc. (10.67%), Tango Therapeutics, Inc. (15.03%), Chimerix, Inc. (2.26%), biote Corp. (2.69%), SNDL Inc. (1.62%), Trevi Therapeutics, Inc. (5.03%), Voyager Therapeutics, Inc. (4.50%), LifeVantage Co. (1.92%), 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 Co. ($5.83 billion), Charter Communications, Inc. ($3.77 billion), Reddit, Inc. ($2.98 billion), The Kroger Co. ($2.97 billion), International Paper ($2.64 billion), SoFi Technologies, Inc. ($1.99 billion), Rivian Automotive, Inc. ($1.93 billion), Onsemi ($1.81 billion), SoundHound AI, Inc. ($1.59 billion), and Moderna, Inc. ($1.57 billion). View all of the most shorted stocks. What does it mean to sell short bluebird bio stock? Short selling BLUE is an investing strategy that aims to generate trading profit from bluebird bio as its price is falling. BLUE 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 bluebird bio? A short squeeze for bluebird bio 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 BLUE, which in turn drives the price of the stock up even further. How often is bluebird 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 BLUE, twice per month. The most recent reporting period available is December, 31 2024. More Short Interest Resources from MarketBeat Related Companies Corvus Pharmaceuticals Short Interest Data Taysha Gene Therapies Short Interest Data Precigen Short Interest Data Tango Therapeutics Short Interest Data Chimerix Short Interest Data biote Short Interest Data SNDL Short Interest Data Trevi Therapeutics Short Interest Data Voyager Therapeutics Short Interest Data LifeVantage 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:BLUE) was last updated on 1/21/2025 by MarketBeat.com Staff From Our PartnersCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... 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