Mirum Pharmaceuticals (MIRM) Short Interest Ratio & Short Volume $51.93 -0.80 (-1.52%) Closing price 04:00 PM EasternExtended Trading$51.92 -0.02 (-0.03%) As of 07:46 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 ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Mirum Pharmaceuticals Short Interest DataMirum Pharmaceuticals (MIRM) has a short interest of 6.51 million shares, representing 15.35% of the float (the number of shares available for trading by the public). This marks a 4.66% increase in short interest from the previous month. The short interest ratio (days to cover) is 14.9, indicating that it would take 14.9 days of the average trading volume of 452,312 shares to cover all short positions.Current Short Interest6,510,000 sharesPrevious Short Interest6,220,000 sharesChange Vs. Previous Month+4.66%Dollar Volume Sold Short$331.29 millionShort Interest Ratio14.9 Days to CoverLast Record DateJune 30, 2025Outstanding Shares49,530,000 sharesShort Percent of Float15.35%Today's Trading Volume255,993 sharesAverage Trading Volume452,312 sharesToday's Volume Vs. Average57% Short Selling Mirum Pharmaceuticals? Sign up to receive the latest short interest report for Mirum Pharmaceuticals and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartMIRM Short Interest Over TimeMIRM Days to Cover Over TimeMIRM Percentage of Float Shorted Over Time Mirum Pharmaceuticals Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/30/20256,510,000 shares $331.29 million +4.7%15.3%14.9 $50.89 6/15/20256,220,000 shares $308.70 million +2.6%14.7%14.7 $49.63 5/31/20256,060,000 shares $268.70 million -3.7%16.4%14.1 $44.34 5/15/20256,290,000 shares $284.81 million +1.0%17.0%13.6 $45.28 4/30/20256,230,000 shares $270.69 million -0.8%N/A12.4 $43.45 4/15/20256,280,000 shares $242.60 million -4.6%17.0%12.3 $38.63 3/31/20256,580,000 shares $296.43 million +4.8%17.8%12.2 $45.05 3/15/20256,280,000 shares $278.08 million -5.3%17.0%12.2 $44.28 2/28/20256,630,000 shares $315.39 million +0.3%17.9%13.3 $47.57 2/15/20256,610,000 shares $330.76 million +0.6%17.9%14.3 $50.04 Get the Latest News and Ratings for MIRM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Mirum Pharmaceuticals and its competitors with MarketBeat's FREE daily newsletter. 1/31/20256,570,000 shares $321.14 million -1.2%N/A14.4 $48.88 1/15/20256,650,000 shares $308.09 million +3.4%N/A16 $46.33 12/31/20246,430,000 shares $265.88 million -6.0%N/A17.5 $41.35 12/15/20246,840,000 shares $290.29 million +1.8%N/A18.3 $42.44 11/30/20246,720,000 shares $310.60 million -3.6%N/A18 $46.22 11/15/20246,970,000 shares $310.17 million +1.8%N/A18.2 $44.50 10/31/20246,850,000 shares $263.45 million -2.1%N/A18.2 $38.46 10/15/20247,000,000 shares $277.97 million -2.2%N/A15.8 $39.71 9/30/20247,160,000 shares $279.24 million +1.6%N/A13.9 $39.00 9/15/20247,050,000 shares $289.90 million -1.0%N/A11.6 $41.12 8/31/20247,120,000 shares $306.94 million +3.6%N/A9.8 $43.11 8/15/20246,870,000 shares $285.31 million -5.8%N/A8.9 $41.53 7/31/20247,290,000 shares $295.61 million -10.8%N/A9.7 $40.55 7/15/20248,170,000 shares $322.55 million +14.3%N/A11.5 $39.48 6/30/20247,150,000 shares $244.46 million -8.3%N/A11 $34.19 6/15/20247,800,000 shares $202.18 million -12.4%N/A12.8 $25.92 5/31/20248,900,000 shares $213.87 million +1.0%N/A17.5 $24.03 5/15/20248,810,000 shares $220.16 million +3.7%N/A18.5 $24.99 4/30/20248,500,000 shares $213.44 million -0.9%N/A17.4 $25.11 4/15/20248,580,000 shares $205.15 million +5.2%N/A17.2 $23.91 3/31/20248,160,000 shares $204.98 million +0.3%N/A13.9 $25.12 3/15/20248,140,000 shares $217.91 million +6.3%N/A13.5 $26.77 2/29/20247,660,000 shares $219.92 million -1.5%N/A11.9 $28.71 2/15/20247,780,000 shares $225.46 million -0.9%N/A11.9 $28.98 1/31/20247,850,000 shares $207.71 million +8.0%N/A11.6 $26.46 1/15/20247,270,000 shares $198.40 million +0.6%N/A10.8 $27.29 12/31/20237,230,000 shares $213.43 million +4.2%N/A12.1 $29.52 12/15/20236,940,000 shares $242.41 million +12.5%N/A12.3 $34.93 11/30/20236,170,000 shares $197.87 million -3.0%N/A11.2 $32.07 11/15/20236,360,000 shares $193.09 million +4.6%N/A12.2 $30.36The End of Elon Musk…? (Ad)The End of Elon Musk? Don't make him laugh. Jeff Brown has been hearing this same tired story for years, and he's been proven right time and time again. And now, while the media focuses on Tesla's "demise," he's uncovered an AI breakthrough that's about to make Elon's doubters eat their words yet again. According to his research, if you listen to the media and miss out on Elon's newest breakthrough, it's going to cost you the fortune of a lifetime.Click here to see why the "End of Elon" crowd is about to be wrong again. 10/31/20236,080,000 shares $166.77 million -2.6%22.6%12.4 $27.43 10/15/20236,240,000 shares $175.47 million +4.9%24.7%12.3 $28.12 9/30/20235,950,000 shares $188.02 million +8.2%23.5%10.2 $31.60 9/15/20235,500,000 shares $180.68 million +8.3%21.8%9.4 $32.85 8/31/20235,080,000 shares $134.26 million +0.6%20.2%9 $26.43 8/15/20235,050,000 shares $129.73 million +24.7%18.7%9.4 $25.69 7/31/20234,050,000 shares $104.33 million +35.0%14.9%7.5 $25.76 7/15/20233,000,000 shares $78.75 million -8.0%11.1%5.7 $26.25 6/30/20233,260,000 shares $84.34 million +10.1%12.1%5.3 $25.87 6/15/20232,960,000 shares $83.15 million +0.7%11.0%5.1 $28.09 5/31/20232,940,000 shares $77.12 million -7.3%11.8%5.6 $26.23 5/15/20233,170,000 shares $82.52 million +1.6%12.7%6.4 $26.03 4/30/20233,120,000 shares $83.77 million +4.4%13.0%6.6 $26.85 4/15/20232,990,000 shares $74.72 million +69.9%12.5%6.3 $24.99 3/31/20231,760,000 shares $42.28 million -10.2%7.2%4.5 $24.02 3/15/20231,960,000 shares $46.31 million +7.1%8.0%6.5 $23.63 2/28/20231,830,000 shares $43.02 million -2.7%7.7%5.7 $23.51 2/15/20231,880,000 shares $42.41 million +14.6%7.9%5.6 $22.56 1/31/20231,640,000 shares $38.51 million +42.6%7.1%4.5 $23.48 1/15/20231,150,000 shares $25.30 million +9.5%4.9%3.2 $22.00 12/30/20221,050,000 shares $20.48 million -13.2%4.5%2.8 $19.50 12/15/20221,210,000 shares $21.62 million -18.8%5.3%3.1 $17.87 11/30/20221,490,000 shares $27.79 million -11.8%6.6%3.7 $18.65 11/15/20221,690,000 shares $33.85 million -8.2%7.4%4.3 $20.03 10/31/20221,840,000 shares $41.49 million -10.2%8.2%4.4 $22.55 10/15/20222,050,000 shares $39.20 million -18.3%9.2%5 $19.12 9/30/20222,510,000 shares $52.74 million +6.4%11.2%6.6 $21.01 9/15/20222,360,000 shares $54.09 million +0.9%10.5%7.1 $22.92 8/31/20222,340,000 shares $58.45 million +8.3%11.4%7.9 $24.98 8/15/20222,160,000 shares $55.58 million +1.9%10.6%7.5 $25.73 7/31/20222,120,000 shares $53.21 million +0.5%11.5%8.1 $25.10 7/15/20222,110,000 shares $50.91 million +5.0%11.7%9.2 $24.13 6/30/20222,010,000 shares $39.11 million +21.8%11.1%8.8 $19.46 6/15/20221,650,000 shares $31.17 million +16.2%9.2%7.3 $18.89 5/31/20221,420,000 shares $33.21 million +67.9%7.9%7.4 $23.39 5/15/2022846,000 shares $20.30 million +13.7%4.7%4.7 $24.00 4/30/2022744,300 shares $17.70 million +14.0%4.1%4.3 $23.78 4/15/2022653,000 shares $17.96 million +19.8%3.6%3.6 $27.50 3/31/2022545,100 shares $12.00 million -27.2%3.2%3 $22.02 3/15/2022748,800 shares $16.21 million +55.7%4.4%4.3 $21.65 2/28/2022480,900 shares $11.40 million +2.7%2.9%2.9 $23.70 2/15/2022468,200 shares $10.28 million -18.1%2.8%2.8 $21.95 1/31/2022571,900 shares $10.89 million +20.3%3.5%3.5 $19.05 1/15/2022475,500 shares $8.91 million +5.2%2.8%3.5 $18.74 12/31/2021452,100 shares $7.21 million -0.5%2.7%3.3 $15.95 12/15/2021454,400 shares $6.65 million +10.3%2.7%2 $14.63 11/30/2021411,800 shares $5.86 million +13.6%2.5%1.8 $14.23 11/15/2021362,600 shares $5.62 million -19.9%2.2%1.6 $15.49 10/29/2021452,400 shares $7.18 million -3.6%2.7%2.2 $15.88 10/15/2021469,300 shares $8.03 million -2.1%3.1%2.3 $17.12The End of Elon Musk…? (Ad)The End of Elon Musk? Don't make him laugh. Jeff Brown has been hearing this same tired story for years, and he's been proven right time and time again. And now, while the media focuses on Tesla's "demise," he's uncovered an AI breakthrough that's about to make Elon's doubters eat their words yet again. According to his research, if you listen to the media and miss out on Elon's newest breakthrough, it's going to cost you the fortune of a lifetime.Click here to see why the "End of Elon" crowd is about to be wrong again. 9/30/2021479,200 shares $9.55 million +17.3%3.1%2.6 $19.92 9/15/2021408,400 shares $7.53 million -11.6%2.6%3.9 $18.43 8/31/2021461,800 shares $7.50 million +5.2%3.0%5.6 $16.25 8/13/2021439,200 shares $6.25 million +10.8%2.9%5.4 $14.24 7/30/2021396,400 shares $5.73 million -43.4%2.6%4.6 $14.45 7/15/2021699,800 shares $10.93 million +3.8%4.6%9 $15.62 6/30/2021673,900 shares $11.65 million -10.4%4.4%8.6 $17.29 6/15/2021751,800 shares $13.53 million +5.8%5.0%8.8 $18.00 5/28/2021710,600 shares $11.75 million -4.1%4.7%7.5 $16.54 5/14/2021741,200 shares $12.93 million -1.6%4.9%6.9 $17.45 4/30/2021752,900 shares $14.26 million -2.1%5.0%6.3 $18.94 4/15/2021768,900 shares $14.33 million -1.9%5.1%6.1 $18.64 3/31/2021784,000 shares $14.89 million +9.4%5.3%5.5 $18.99 3/15/2021716,700 shares $14.23 million +6.3%4.9%4.1 $19.86 2/26/2021674,100 shares $12.62 million +5.7%4.7%3.1 $18.72 2/12/2021637,700 shares $13.09 million -0.3%4.5%3.2 $20.53 1/29/2021639,300 shares $11.62 million -35.8%4.5%3.3 $18.18 1/15/2021996,300 shares $18.39 million -2.3%7.0%5.4 $18.46 12/31/20201,020,000 shares $18.56 million +26.6%8.4%6 $18.20 12/15/2020805,800 shares $19.34 million +13.7%6.6%6.1 $24.00 11/30/2020708,700 shares $15.77 million +7.0%6.8%11.3 $22.25 11/15/2020662,600 shares $12.72 million +1.8%6.4%9.9 $19.19 10/30/2020650,900 shares $10.50 million +5.4%6.6%10.3 $16.13 10/15/2020617,700 shares $12.22 million -1.4%6.3%8.7 $19.78 9/30/2020626,400 shares $12.07 million +5.0%6.3%9 $19.27 9/15/2020596,700 shares $12.61 million -1.6%6.0%8.2 $21.14 8/31/2020606,300 shares $15.74 million +4.3%6.1%7.6 $25.96 8/14/2020581,600 shares $14.06 million -4.2%5.9%6.4 $24.17 7/31/2020607,300 shares $13.41 million -6.7%6.1%6.4 $22.08 MIRM Short Interest - Frequently Asked Questions What is Mirum Pharmaceuticals' current short interest? Short interest is the volume of Mirum Pharmaceuticals shares that have been sold short but have not yet been covered or closed out. As of June 30th, investors have sold 6,510,000 shares of MIRM short. 15.35% of Mirum Pharmaceuticals' shares are currently sold short. Learn More on Mirum Pharmaceuticals' current short interest. What is a good short interest ratio for Mirum Pharmaceuticals? 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. MIRM shares currently have a short interest ratio of 15.0. Learn More on Mirum Pharmaceuticals's short interest ratio. Which institutional investors are shorting Mirum Pharmaceuticals? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Mirum Pharmaceuticals: Jane Street Group LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Mirum Pharmaceuticals? 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. 15.35% of Mirum Pharmaceuticals' floating shares are currently sold short. Is Mirum Pharmaceuticals' short interest increasing or decreasing? Mirum Pharmaceuticals saw a increase in short interest in the month of June. As of June 30th, there was short interest totaling 6,510,000 shares, an increase of 4.7% from the previous total of 6,220,000 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 Mirum Pharmaceuticals' short interest compare to its competitors? 15.35% of Mirum Pharmaceuticals' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Mirum Pharmaceuticals: BridgeBio Pharma, Inc. (14.05%), Verona Pharma PLC American Depositary Share (0.60%), Blueprint Medicines Corporation (5.95%), Roivant Sciences Ltd. (10.24%), Elanco Animal Health Incorporated (5.08%), Regencell Bioscience Holdings Limited (4.03%), Legend Biotech Corporation Sponsored ADR (5.68%), Revolution Medicines, Inc. (9.42%), Grifols, S.A. (1.00%), TG Therapeutics, Inc. (16.96%), 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 ($72.10 billion), Invesco QQQ ($26.89 billion), iShares Russell 2000 ETF ($19.61 billion), MicroStrategy Incorporated ($9.52 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), WD-40 Company ($7.66 billion), Technology Select Sector SPDR Fund ($6.10 billion), Invesco S&P 500 Equal Weight ETF ($5.80 billion), Invesco S&P 500 Top 50 ETF ($5.53 billion), and Vanguard Large-Cap ETF ($5.35 billion). View all of the most shorted stocks. What does it mean to sell short Mirum Pharmaceuticals stock? Short selling MIRM is an investing strategy that aims to generate trading profit from Mirum Pharmaceuticals as its price is falling. MIRM shares are trading down $0.80 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 Mirum Pharmaceuticals? A short squeeze for Mirum Pharmaceuticals 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 MIRM, which in turn drives the price of the stock up even further. How often is Mirum Pharmaceuticals' 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 MIRM, twice per month. The most recent reporting period available is June, 30 2025. More Short Interest Resources from MarketBeat Related Companies BridgeBio Pharma Short Interest Data Verona Pharma PLC American Depositary Share Short Interest Data Blueprint Medicines Short Interest Data Roivant Sciences Short Interest Data Elanco Animal Health Short Interest Data Regencell Bioscience Short Interest Data Legend Biotech Short Interest Data Revolution Medicines Short Interest Data Grifols Short Interest Data TG Therapeutics 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:MIRM) was last updated on 7/18/2025 by MarketBeat.com Staff From Our PartnersUtah’s New Oil FindThe Real Reason 218,000 Acres Just Vanished The government just quietly leased 218,000 acres in the middle ...Stansberry Research | SponsoredMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredCritical AI announcement set to ignite AI 2.0 I just put together an urgent new presentation that you need to see right away. 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