Biogen (BIIB) Short Interest Ratio & Short Volume $146.47 -0.92 (-0.62%) (As of 12/20/2024 05:45 PM ET) Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends Biogen Short Interest DataBiogen (BIIB) has a short interest of 2.72 million shares, representing 1.88% of the float (the number of shares available for trading by the public). This marks a 0.74% increase in short interest from the previous month. The short interest ratio (days to cover) is 1.9, indicating that it would take 1.9 days of the average trading volume of 1.22 million shares to cover all short positions.Current Short Interest2,720,000 sharesPrevious Short Interest2,700,000 sharesChange Vs. Previous Month+0.74%Dollar Volume Sold Short$436.91 millionShort Interest Ratio1.9 Days to CoverLast Record DateNovember 30, 2024Outstanding Shares145,719,000 sharesFloat Size144,680,000 sharesShort Percent of Float1.88%Today's Trading Volume5,775,622 sharesAverage Trading Volume1,216,867 sharesToday's Volume Vs. Average475% Short Selling Biogen? Sign up to receive the latest short interest report for Biogen and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartBIIB Short Interest Over TimeBIIB Days to Cover Over TimeBIIB Percentage of Float Shorted Over Time Ad Crypto Swap ProfitsURGENT: This Altcoin Opportunity Won’t Wait – Act NowAll of our key indicators are flashing the same signal: an altcoin season is fast approaching. And if you know anything about crypto, you know that altcoin seasons are where some of the biggest gains happen.Register for the FREE Workshop Now & get $10 in Bitcoin Biogen Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 11/30/20242,720,000 shares $436.91 million +0.7%1.9%1.9 $160.63 11/15/20242,700,000 shares $431.97 million -13.5%1.9%2 $159.99 10/31/20243,120,000 shares $542.88 million +1.6%2.2%2.7 $174.00 10/15/20243,070,000 shares $588.06 million +7.7%2.1%2.8 $191.55 9/30/20242,850,000 shares $552.44 million -22.3%2.0%2.7 $193.84 9/15/20243,670,000 shares $717.96 million +9.9%2.5%3.6 $195.63 Get the Latest News and Ratings for BIIB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Biogen and its competitors with MarketBeat's FREE daily newsletter. 8/31/20243,340,000 shares $683.90 million +24.6%2.3%3.4 $204.76 8/15/20242,680,000 shares $540.37 million -1.8%1.9%2.6 $201.63 7/31/20242,730,000 shares $582.04 million -24.8%1.9%2.6 $213.20 7/15/20243,630,000 shares $804.34 million +32.5%2.5%3.4 $221.58 6/30/20242,740,000 shares $635.19 million -10.8%1.9%2.5 $231.82 6/15/20243,070,000 shares $711.29 million +1.7%2.1%2.7 $231.69 5/31/20243,020,000 shares $679.32 million -13.2%2.1%2.5 $224.94 5/15/20243,480,000 shares $818.91 million +10.5%2.4%2.9 $235.32 4/30/20243,150,000 shares $676.68 million -3.4%2.2%2.4 $214.82 4/15/20243,260,000 shares $641.57 million -8.2%2.3%2.7 $196.80 3/31/20243,550,000 shares $765.49 million +33.5%2.5%3 $215.63 3/15/20242,660,000 shares $583.36 million -5.0%1.8%2.4 $219.31 2/29/20242,800,000 shares $607.57 million -9.7%1.9%2.4 $216.99 2/15/20243,100,000 shares $692.39 million +1.3%2.2%2.8 $223.35 1/31/20243,060,000 shares $754.78 million -18.6%2.1%2.9 $246.66 1/15/20243,760,000 shares $932.93 million -3.8%2.6%3.4 $248.12 12/31/20233,910,000 shares $1.01 billion +32.5%2.7%3.6 $258.77 12/15/20232,950,000 shares $731.98 million +4.2%2.1%2.7 $248.13 11/30/20232,830,000 shares $662.45 million +7.6%2.0%2.9 $234.08 11/15/20232,630,000 shares $603.93 million -2.2%1.8%2.8 $229.63 10/31/20232,690,000 shares $638.98 million +1.9%1.9%3 $237.54 10/15/20232,640,000 shares $692.37 million -7.7%1.8%2.8 $262.26 9/30/20232,860,000 shares $735.05 million -10.9%2.0%3 $257.01 9/15/20233,210,000 shares $817.88 million +2.2%2.2%3.2 $254.79 8/31/20233,140,000 shares $839.51 million +3.6%2.2%2.9 $267.36 8/15/20233,030,000 shares $818.77 million -11.4%2.1%2.7 $270.22 7/31/20233,420,000 shares $924.05 million +33.1%2.4%3.1 $270.19 7/15/20232,570,000 shares $716.85 million +24.2%1.8%2.2 $278.93 6/30/20232,070,000 shares $589.64 million -7.2%1.4%2 $284.85 6/15/20232,230,000 shares $664.16 million -11.9%1.6%2.3 $297.83 5/31/20232,530,000 shares $749.92 million -14.5%1.8%2.7 $296.41 5/15/20232,960,000 shares $923.14 million +30.4%2.1%3.3 $311.87 4/30/20232,270,000 shares $690.60 million +13.5%1.6%2.4 $304.23 4/15/20232,000,000 shares $576.26 million -2.4%1.4%2.4 $288.13Missed Nvidia? 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I believe this Elon Musk “silent partner” could be the next big AI winner.So please click here to see the details because a lot of people could get rich. 3/31/20232,050,000 shares $569.96 million +3.5%1.4%2.2 $278.03 3/15/20231,980,000 shares $519.49 million +7.0%1.4%2 $262.37 2/28/20231,850,000 shares $499.24 million +8.2%1.3%1.8 $269.86 2/15/20231,710,000 shares $477.06 million -8.6%1.2%1.5 $278.98 1/31/20231,870,000 shares $543.98 million -1.1%1.3%1.6 $290.90 1/15/20231,890,000 shares $544.40 million +10.5%1.3%1.5 $288.04 12/30/20221,710,000 shares $473.53 million -18.6%1.2%1.2 $276.92 12/15/20222,100,000 shares $595.22 million -15.7%1.5%1.2 $283.44 11/30/20222,490,000 shares $759.87 million +2.5%1.7%1.4 $305.17 11/15/20222,430,000 shares $728.47 million -1.6%N/A1.5 $299.78 10/31/20222,470,000 shares $700.10 million -1.2%1.7%1.6 $283.44 10/15/20222,500,000 shares $661.58 million -7.8%1.7%1.7 $264.63 9/30/20222,710,000 shares $723.57 million +30.9%1.9%2.1 $267.00 9/15/20222,070,000 shares $427.91 million +9.5%1.4%2.2 $206.72 8/31/20221,890,000 shares $369.27 million -5.5%1.3%2 $195.38 8/15/20222,000,000 shares $444.76 million +3.1%1.4%2.1 $222.38 7/31/20221,940,000 shares $417.22 million -7.2%1.3%1.8 $215.06 7/15/20222,090,000 shares $453.55 million -17.1%1.4%1.9 $217.01 6/30/20222,520,000 shares $513.93 million -5.3%1.7%2.3 $203.94 6/15/20222,660,000 shares $524.71 million +10.4%1.8%2.4 $197.26 5/31/20222,410,000 shares $482 million +9.6%1.7%2.2 $200.00 5/15/20222,200,000 shares $438.04 million +7.8%1.5%2 $199.11 4/30/20222,040,000 shares $423.18 million +5.7%1.4%1.9 $207.44 4/15/20221,930,000 shares $410.22 million No Change1.3%1.7 $212.55 3/31/20221,930,000 shares $406.46 million -12.3%1.3%1.4 $210.60 3/15/20222,200,000 shares $434.19 million -11.3%1.5%1.4 $197.36 2/28/20222,480,000 shares $523.30 million -2.4%1.7%1.6 $211.01 2/15/20222,540,000 shares $552.12 million -13.9%1.7%1.6 $217.37 1/31/20222,950,000 shares $666.70 million +2.1%2.0%1.8 $226.00 1/15/20222,890,000 shares $691.58 million +17.5%2.0%1.9 $239.30 12/31/20212,460,000 shares $590.20 million +5.6%1.7%1.8 $239.92 12/15/20212,330,000 shares $549.60 million -2.5%1.6%2 $235.88 11/30/20212,390,000 shares $563.42 million +16.6%1.6%2.1 $235.74 11/15/20212,050,000 shares $557.23 million -13.9%1.4%2 $271.82 10/29/20212,380,000 shares $634.70 million -0.8%1.6%2.3 $266.68 10/15/20212,400,000 shares $674.86 million -3.6%1.6%2.4 $281.19 9/30/20212,490,000 shares $704.65 million +2.1%1.7%2.4 $282.99 9/15/20212,440,000 shares $730.07 million +2.5%1.6%2.1 $299.21 8/31/20212,380,000 shares $806.61 million +9.2%1.6%1.7 $338.91 8/13/20212,180,000 shares $746.11 million +21.8%1.5%1.1 $342.25 7/30/20211,790,000 shares $584.85 million -4.3%1.2%0.9 $326.73 7/15/20211,870,000 shares $613.66 million -2.6%1.2%1 $328.16 6/30/20211,920,000 shares $664.84 million -44.8%1.3%1 $346.27 6/15/20213,480,000 shares $1.38 billion +11.2%2.3%2 $396.08 5/28/20213,130,000 shares $837.21 million +3.0%2.1%1.9 $267.48 5/14/20213,040,000 shares $856.40 million -5.6%2.0%2.8 $281.71 4/30/20213,220,000 shares $854.36 million -0.6%2.1%2.9 $265.33 4/15/20213,240,000 shares $861.16 million -11.2%2.2%2.7 $265.79 3/31/20213,650,000 shares $1.01 billion -8.1%2.4%2.9 $276.01 3/15/20213,970,000 shares $1.06 billion +11.2%2.6%3 $266.13Missed Nvidia? 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I believe this Elon Musk “silent partner” could be the next big AI winner.So please click here to see the details because a lot of people could get rich. 2/26/20213,570,000 shares $989.82 million +4.4%2.4%2.8 $277.26 2/12/20213,420,000 shares $953.53 million -6.8%2.3%2.6 $278.81 1/29/20213,670,000 shares $983.08 million +0.8%2.4%2.4 $267.87 1/15/20213,640,000 shares $1.02 billion -2.4%2.4%2.1 $280.29 12/31/20203,730,000 shares $908.55 million -3.1%2.4%2.2 $243.58 12/15/20203,850,000 shares $944.21 million -7.0%2.5%2.3 $245.25 11/30/20204,140,000 shares $1.01 billion +11.6%2.7%2.5 $243.78 11/15/20203,710,000 shares $922.27 million -2.4%2.4%2.3 $248.59 10/30/20203,800,000 shares $932.82 million +26.3%2.5%2.5 $245.48 10/15/20203,010,000 shares $869.95 million +6.4%2.0%2.6 $289.02 9/30/20202,830,000 shares $802.81 million -23.3%1.8%2.5 $283.68 9/15/20203,690,000 shares $1.03 billion +11.5%2.3%3 $278.45 8/31/20203,310,000 shares $952.09 million +39.1%2.1%2.2 $287.64 8/14/20202,380,000 shares $688.89 million -6.7%1.5%1.6 $289.45 7/31/20202,550,000 shares $700.46 million -8.3%1.6%1.6 $274.69 7/15/20202,780,000 shares $781.93 million -14.7%1.8%1.7 $281.27 6/30/20203,260,000 shares $872.21 million -29.9%2.0%1.8 $267.55 6/15/20204,650,000 shares $1.29 billion +2.7%2.9%2.4 $278.49 5/29/20204,530,000 shares $1.39 billion +1.1%2.8%2.3 $307.09 5/15/20204,480,000 shares $1.42 billion +7.4%2.8%2.2 $316.60 4/30/20204,170,000 shares $1.24 billion +9.5%2.6%2 $296.83 4/15/20203,810,000 shares $1.25 billion +26.6%2.3%1.7 $326.94 3/31/20203,010,000 shares $896.38 million -15.5%1.7%1.4 $297.80 3/13/20203,560,900 shares $1.14 billion +13.4%2.1%1.9 $321.05 2/28/20203,140,000 shares $845.26 million -6.8%1.8%1.8 $269.19 2/14/20203,370,000 shares $1.03 billion +8.4%1.9%1.9 $305.63 1/31/20203,110,000 shares $1.02 billion -13.6%1.8%1.7 $327.45 1/15/20203,600,000 shares $1.20 billion -16.9%2.0%2 $332.29 12/31/20194,330,000 shares $1.20 billion +3.3%2.4%2 $278.14 BIIB Short Interest - Frequently Asked Questions What is Biogen's current short interest? Short interest is the volume of Biogen shares that have been sold short but have not yet been covered or closed out. As of November 30th, investors have sold 2,720,000 shares of BIIB short. 1.88% of Biogen's shares are currently sold short. Learn More on Biogen's current short interest. What is a good short interest ratio for Biogen? 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. BIIB shares currently have a short interest ratio of 2.0. Learn More on Biogen's short interest ratio. Which institutional investors are shorting Biogen? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Biogen: Barclays PLC, Jane Street Group LLC, Wolverine Trading LLC, Point72 DIFC Ltd, Parallax Volatility Advisers L.P., Verition Fund Management LLC, Capstone Investment Advisors LLC, Walleye Trading LLC, Walleye Capital LLC, BNP Paribas Financial Markets, Citigroup Inc., and SG Americas Securities LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Biogen? 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. 1.88% of Biogen's floating shares are currently sold short. Is Biogen's short interest increasing or decreasing? Biogen saw a increase in short interest in November. As of November 30th, there was short interest totaling 2,720,000 shares, an increase of 0.7% from the previous total of 2,700,000 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 Biogen's float size? Biogen currently has issued a total of 145,719,000 shares. Some of Biogen'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. Biogen currently has a public float of 144,680,000 shares. How does Biogen's short interest compare to its competitors? 1.88% of Biogen's shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to Biogen: Regeneron Pharmaceuticals, Inc. (1.64%), Alnylam Pharmaceuticals, Inc. (2.63%), United Therapeutics Co. (4.75%), Incyte Co. (3.16%), Neurocrine Biosciences, Inc. (3.86%), BioMarin Pharmaceutical Inc. (3.02%), Exact Sciences Co. (6.39%), Exelixis, Inc. (3.00%), Repligen Co. (6.34%), Madrigal Pharmaceuticals, Inc. (19.62%), 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. ($5.70 billion), Charter Communications, Inc. ($4.55 billion), Spotify Technology S.A. ($3.84 billion), Royal Caribbean Cruises Ltd. ($3.07 billion), International Paper ($3.00 billion), Coinbase Global, Inc. ($2.93 billion), Cencora, Inc. ($2.54 billion), Paychex, Inc. ($2.53 billion), SoFi Technologies, Inc. ($2.24 billion), and Reddit, Inc. ($2.00 billion). View all of the most shorted stocks. What does it mean to sell short Biogen stock? Short selling BIIB is an investing strategy that aims to generate trading profit from Biogen as its price is falling. BIIB shares are trading down $0.92 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 Biogen? A short squeeze for Biogen 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 BIIB, which in turn drives the price of the stock up even further. How often is Biogen'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 BIIB, twice per month. The most recent reporting period available is November, 30 2024. More Short Interest Resources from MarketBeat Related Companies Regeneron Pharmaceuticals Short Interest Data Alnylam Pharmaceuticals Short Interest Data United Therapeutics Short Interest Data Incyte Short Interest Data Neurocrine Biosciences Short Interest Data BioMarin Pharmaceutical Short Interest Data Exact Sciences Short Interest Data Exelixis Short Interest Data Repligen Short Interest Data Madrigal Pharmaceuticals 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:BIIB) was last updated on 12/21/2024 by MarketBeat.com Staff From Our PartnersAmazon coin set to soar 25X – starting December 16th?This tiny 3-cent crypto just partnered with one of the biggest companies in the world… Amazon. And one team...True Market Insiders | SponsoredDid You See Trump’s Bombshell Exec. Order 001?Biden broke it... Now Trump is going to fix it. 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