BioMarin Pharmaceutical (BMRN) Short Interest Ratio & Short Volume $68.25 -0.48 (-0.70%) Closing price 04:00 PM EasternExtended Trading$67.50 -0.75 (-1.10%) As of 07:16 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 AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrends BioMarin Pharmaceutical Short Interest DataBioMarin Pharmaceutical (BMRN) has a short interest of 4.50 million shares. This marks a 2.74% increase in short interest from the previous month. The short interest ratio (days to cover) is 3.0, indicating that it would take 3.0 days of the average trading volume of 1.62 million shares to cover all short positions.Current Short Interest4,500,000 sharesPrevious Short Interest4,380,000 sharesChange Vs. Previous Month+2.74%Dollar Volume Sold Short$285.12 millionShort Interest Ratio3.0 Days to CoverLast Record DateJanuary 31, 2025Outstanding Shares190,580,000 sharesPercentage of Shares Shorted2.36%Today's Trading Volume2,348,882 sharesAverage Trading Volume1,616,799 sharesToday's Volume Vs. Average145% Short Selling BioMarin Pharmaceutical? Sign up to receive the latest short interest report for BioMarin Pharmaceutical and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartBMRN Short Interest Over TimeBMRN Days to Cover Over TimeBMRN Percentage of Float Shorted Over Time BioMarin Pharmaceutical Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 1/31/20254,500,000 shares $285.12 million +2.7%N/A3 $63.36 1/15/20254,380,000 shares $269.72 million -3.5%N/A2.8 $61.58 12/31/20244,540,000 shares $298.41 million -12.9%N/A3.2 $65.73 12/15/20245,210,000 shares $343.91 million -9.4%N/A3.5 $66.01 11/30/20245,750,000 shares $379.67 million +12.3%N/A3.3 $66.03 11/15/20245,120,000 shares $324.71 million -4.8%N/A2.9 $63.42 10/31/20245,380,000 shares $354.49 million -3.8%N/A3.1 $65.89 10/15/20245,590,000 shares $393.87 million +5.9%N/A3.2 $70.46 9/30/20245,280,000 shares $371.13 million -12.2%N/A3 $70.29 9/15/20246,010,000 shares $510.25 million +2.7%N/A3.3 $84.90 Get the Latest News and Ratings for BMRN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for BioMarin Pharmaceutical and its competitors with MarketBeat's FREE daily newsletter. 8/31/20245,850,000 shares $533.58 million -12.0%N/A2.6 $91.21 8/15/20246,650,000 shares $593.05 million -3.3%N/A2.8 $89.18 7/31/20246,880,000 shares $580.19 million -7.9%N/A2.8 $84.33 7/15/20247,470,000 shares $631.89 million -11.3%N/A2.9 $84.59 6/30/20248,420,000 shares $693.22 million +136.5%N/A3.3 $82.33 6/15/20243,560,000 shares $297.30 million +17.1%N/A1.4 $83.51 5/31/20243,040,000 shares $228.21 million -18.7%N/A1.6 $75.07 5/15/20243,740,000 shares $300.70 million -4.4%N/A2.2 $80.40 4/30/20243,910,000 shares $315.77 million +6.0%N/A2.5 $80.76 4/15/20243,690,000 shares $337.67 million +20.6%N/A2.6 $91.51 3/31/20243,060,000 shares $267.26 million +3.4%N/A2.3 $87.34 3/15/20242,960,000 shares $248.26 million -3.3%N/A2.2 $83.87 2/29/20243,060,000 shares $264.02 million -6.1%N/A2.1 $86.28 2/15/20243,260,000 shares $287.86 million +2.8%N/A2.2 $88.30 1/31/20243,170,000 shares $279.21 million -7.3%N/A1.9 $88.08 1/15/20243,420,000 shares $319.19 million -7.6%N/A2 $93.33 12/31/20233,700,000 shares $356.75 million -15.5%N/A2.2 $96.42 12/15/20234,380,000 shares $425.56 million +29.6%N/A2.4 $97.16 11/30/20233,380,000 shares $307.85 million +9.7%N/A2 $91.08 11/15/20233,080,000 shares $268.14 million -6.4%N/A2 $87.06 10/31/20233,290,000 shares $267.97 million -53.2%N/A2.5 $81.45 10/15/20237,030,000 shares $606.97 million +7.5%N/A6.1 $86.34 9/30/20236,540,000 shares $578.66 million -0.5%N/A5.6 $88.48 9/15/20236,570,000 shares $579.21 million +5.1%N/A5.1 $88.16 8/31/20236,250,000 shares $571.13 million +3.1%N/A5 $91.38 8/15/20236,060,000 shares $549.46 million -2.4%N/A4.8 $90.67 7/31/20236,210,000 shares $546.05 million -6.3%N/A5 $87.93 7/15/20236,630,000 shares $569.32 million +51.4%N/A5.3 $85.87 6/30/20234,380,000 shares $379.66 million -27.0%N/A3.6 $86.68 6/15/20236,000,000 shares $575.04 million -10.9%N/A5.7 $95.84Here’s how you could profit from Elon’s NVIDIA partnership (Ad)"Elon's #1 AI Stock" SET TO SOAR Forget ChatGPT! Because Elon Musk's AI promises to be 100x more powerful. After all, ChatGPT just works online... While Elon's AI works in the real world. Get all the details here >>> 5/31/20236,730,000 shares $585.11 million -3.9%N/A5.9 $86.94 5/15/20237,000,000 shares $666.26 million +4.2%N/A5.5 $95.18 4/30/20236,720,000 shares $645.39 million +4.5%N/A5.1 $96.04 4/15/20236,430,000 shares $636.63 million +8.3%3.5%4.7 $99.01 3/31/20235,940,000 shares $577.61 million -2.8%3.3%4.1 $97.24 3/15/20236,110,000 shares $536.09 million -16.1%3.4%4.1 $87.74 2/28/20237,280,000 shares $725.02 million +7.9%4.0%4.9 $99.59 2/15/20236,750,000 shares $730.22 million +3.2%3.7%4.6 $108.18 1/31/20236,540,000 shares $754.39 million -2.4%3.6%4.3 $115.35 1/15/20236,700,000 shares $755.22 million -35.3%3.7%4.3 $112.72 12/30/202210,360,000 shares $1.07 billion -1.7%5.7%6.7 $103.49 12/15/202210,540,000 shares $1.14 billion +3.2%5.8%7.2 $108.61 11/30/202210,210,000 shares $1.03 billion +4.0%5.6%7.4 $100.98 11/15/20229,820,000 shares $846.29 million -12.9%N/A7.7 $86.18 10/31/202211,270,000 shares $976.32 million -3.5%6.2%9.7 $86.63 10/15/202211,680,000 shares $1.02 billion +1.4%6.4%10.9 $87.25 9/30/202211,520,000 shares $976.55 million +0.3%6.3%11.6 $84.77 9/15/202211,490,000 shares $1.01 billion +0.6%6.3%11.5 $88.09 8/31/202211,420,000 shares $1.02 billion +0.7%6.3%10.5 $89.20 8/15/202211,340,000 shares $1.10 billion -0.2%6.2%10.2 $96.94 7/31/202211,360,000 shares $977.53 million +0.8%6.3%9.5 $86.05 7/15/202211,270,000 shares $981.39 million -0.7%6.2%9.6 $87.08 6/30/202211,350,000 shares $940.57 million -3.2%6.2%9.4 $82.87 6/15/202211,720,000 shares $869.04 million +2.2%6.5%9.4 $74.15 5/31/202211,470,000 shares $861.74 million -5.7%6.3%9.9 $75.13 5/15/202212,160,000 shares $945.20 million +7.0%6.7%9.5 $77.73 4/30/202211,370,000 shares $924.95 million -0.8%6.2%9 $81.35 4/15/202211,460,000 shares $950.61 million +3.3%6.3%9.2 $82.95 3/31/202211,090,000 shares $855.04 million +1.9%6.1%8.2 $77.10 3/15/202210,880,000 shares $851.58 million -0.2%6.0%8.7 $78.27 2/28/202210,900,000 shares $851.51 million +0.4%6.0%8.3 $78.12 2/15/202210,860,000 shares $999.88 million +3.0%6.0%8.3 $92.07 1/31/202210,540,000 shares $934.16 million -0.1%5.8%7.7 $88.63 1/15/202210,550,000 shares $951.82 million +3.0%5.8%7.1 $90.22 12/31/202110,240,000 shares $904.70 million -1.3%5.6%6.9 $88.35 12/15/202110,370,000 shares $872.95 million +1.2%5.7%7.3 $84.18 11/30/202110,250,000 shares $884.47 million +1.2%5.6%7.2 $86.29 11/15/202110,130,000 shares $831.37 million -5.6%5.6%7 $82.07 10/29/202110,730,000 shares $850.14 million -0.1%5.9%8.2 $79.23 10/15/202110,740,000 shares $815.06 million -0.9%5.9%9.3 $75.89 9/30/202110,840,000 shares $837.82 million -1.8%6.0%9.9 $77.29 9/15/202111,040,000 shares $853.06 million +0.5%6.1%9.9 $77.27 8/31/202110,990,000 shares $925.47 million +3.5%6.0%10.2 $84.21 8/13/202110,620,000 shares $796.82 million +4.6%5.8%11 $75.03 7/30/202110,150,000 shares $778.81 million -0.9%5.6%10.7 $76.73 7/15/202110,240,000 shares $814.80 million -3.3%5.7%11.3 $79.57 6/30/202110,590,000 shares $883.63 million -10.4%5.8%11.7 $83.44 6/15/202111,820,000 shares $968.77 million -1.8%6.5%13.5 $81.96 5/28/202112,030,000 shares $929.92 million +1.3%6.6%12.9 $77.30 5/14/202111,880,000 shares $897.06 million +1.2%N/A11.3 $75.51Here’s how you could profit from Elon’s NVIDIA partnership (Ad)"Elon's #1 AI Stock" SET TO SOAR Forget ChatGPT! Because Elon Musk's AI promises to be 100x more powerful. After all, ChatGPT just works online... While Elon's AI works in the real world. Get all the details here >>> 4/30/202111,740,000 shares $941.31 million +2.4%N/A10.8 $80.18 4/15/202111,470,000 shares $897.30 million +2.3%N/A10.1 $78.23 3/31/202111,210,000 shares $840.30 million +1.2%N/A8.5 $74.96 3/15/202111,080,000 shares $850.61 million -2.9%N/A7.7 $76.77 2/26/202111,410,000 shares $932.88 million +1.6%N/A7.8 $81.76 2/12/202111,230,000 shares $975.44 million -1.9%N/A8.1 $86.86 1/29/202111,450,000 shares $952.07 million +0.4%N/A8 $83.15 1/15/202111,410,000 shares $928.32 million +2.0%N/A7.6 $81.36 12/31/202011,190,000 shares $973.08 million -4.7%N/A7.5 $86.96 12/15/202011,740,000 shares $972.66 million -1.1%N/A8 $82.85 11/30/202011,870,000 shares $954.35 million -1.6%N/A7.8 $80.40 11/15/202012,060,000 shares $934.89 million +3.3%N/A6.8 $77.52 10/30/202011,680,000 shares $869.23 million +4.5%N/A4.7 $74.42 10/15/202011,180,000 shares $880.87 million -4.4%N/A4.7 $78.79 9/30/202011,690,000 shares $889.38 million +14.2%N/A5 $76.08 9/15/202010,240,000 shares $773.22 million -0.6%N/A4.4 $75.51 8/31/202010,300,000 shares $803.71 million +0.6%N/A4.6 $78.03 8/14/202010,240,000 shares $1.21 billion +2.8%N/A4.8 $118.16 7/31/20209,960,000 shares $1.19 billion -1.3%N/A6.8 $119.81 7/15/202010,090,000 shares $1.28 billion -4.3%N/A6.5 $126.43 6/30/202010,540,000 shares $1.30 billion +7.0%N/A6.5 $123.34 6/15/20209,850,000 shares $1.04 billion -0.2%N/A5.9 $105.76 5/29/20209,870,000 shares $1.05 billion +7.9%N/A5.7 $106.55 5/15/20209,150,000 shares $857.72 million +12.6%N/A5.1 $93.74 4/30/20208,130,000 shares $748.12 million -2.3%N/A4.9 $92.02 4/15/20208,320,000 shares $685.24 million -6.4%4.7%5.2 $82.36 3/31/20208,890,000 shares $865.09 million -10.6%5.0%5.5 $97.31 3/13/20209,938,200 shares $790.58 million +9.6%5.6%5.5 $79.55 2/28/20209,070,000 shares $647.33 million +6.2%5.1%6.7 $71.37 BMRN Short Interest - Frequently Asked Questions What is BioMarin Pharmaceutical's current short interest? Short interest is the volume of BioMarin Pharmaceutical shares that have been sold short but have not yet been covered or closed out. As of January 31st, traders have sold 4,500,000 shares of BMRN short. Learn More on BioMarin Pharmaceutical's current short interest. What is a good short interest ratio for BioMarin Pharmaceutical? 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. BMRN shares currently have a short interest ratio of 3.0. Learn More on BioMarin Pharmaceutical's short interest ratio. Which institutional investors are shorting BioMarin Pharmaceutical? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of BioMarin Pharmaceutical: GTS Securities LLC, Wolverine Trading LLC, Squarepoint Ops LLC, Nomura Holdings Inc., Millennium Management LLC, LMR Partners LLP, Group One Trading LLC, D. E. Shaw & Co. Inc., Cubist Systematic Strategies LLC, Caption Management LLC, Citadel Advisors LLC, 683 Capital Management LLC, Jane Street Group LLC, Tudor Investment Corp ET AL, Parallax Volatility Advisers L.P., HAP Trading LLC, Concourse Financial Group Securities Inc., PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Barclays PLC, Capital Fund Management S.A., Twin Tree Management LP, and SG Americas Securities LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is BioMarin Pharmaceutical's short interest increasing or decreasing? BioMarin Pharmaceutical saw a increase in short interest in the month of January. As of January 31st, there was short interest totaling 4,500,000 shares, an increase of 2.7% from the previous total of 4,380,000 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. How does BioMarin Pharmaceutical's short interest compare to its competitors? Here is how the short interest of companies in the industry of "biotechnology" compare to BioMarin Pharmaceutical: Alnylam Pharmaceuticals, Inc. (2.27%), Biogen Inc. (2.59%), United Therapeutics Co. (4.59%), Incyte Co. (3.06%), Neurocrine Biosciences, Inc. (2.41%), Exelixis, Inc. (4.72%), Exact Sciences Co. (5.37%), Repligen Co. (6.38%), Halozyme Therapeutics, Inc. (7.22%), Madrigal Pharmaceuticals, Inc. (18.25%), 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. ($5.21 billion), Charter Communications, Inc. ($4.07 billion), Reddit, Inc. ($3.33 billion), The Kroger Co. ($2.67 billion), Cencora, Inc. ($2.29 billion), Hims & Hers Health, Inc. ($2.17 billion), SoFi Technologies, Inc. ($1.99 billion), Live Nation Entertainment, Inc. ($1.87 billion), Rivian Automotive, Inc. ($1.76 billion), and Moderna, Inc. ($1.60 billion). View all of the most shorted stocks. What does it mean to sell short BioMarin Pharmaceutical stock? Short selling BMRN is an investing strategy that aims to generate trading profit from BioMarin Pharmaceutical as its price is falling. BMRN shares are trading down $0.48 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 BioMarin Pharmaceutical? A short squeeze for BioMarin Pharmaceutical 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 BMRN, which in turn drives the price of the stock up even further. How often is BioMarin Pharmaceutical'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 BMRN, twice per month. The most recent reporting period available is January, 31 2025. 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