Idorsia (IDRSF) Short Interest Ratio & Short Volume $1.86 0.00 (0.00%) As of 06/13/2025 Add Compare Share Share Short Interest Stock AnalysisChartHeadlinesShort InterestBuy This Stock Idorsia Short Interest DataIdorsia (IDRSF) has a short interest of 1.94 million shares. This marks a -0.45% decrease in short interest from the previous month. The short interest ratio (days to cover) is 1,935.4, indicating that it would take 1,935.4 days of the average trading volume of 1,054 shares to cover all short positions.Current Short Interest1,935,400 sharesPrevious Short Interest1,944,200 sharesChange Vs. Previous Month-0.45%Dollar Volume Sold Short$3.60 millionShort Interest Ratio1,935.4 Days to CoverLast Record DateMay 31, 2025Today's Trading Volume0 sharesAverage Trading Volume1,054 sharesToday's Volume Vs. Average0% Short Selling Idorsia? Sign up to receive the latest short interest report for Idorsia and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartIDRSF Short Interest Over TimeIDRSF Days to Cover Over TimeIDRSF Percentage of Float Shorted Over Time Idorsia Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/31/20251,935,400 shares $3.60 million -0.5%N/A1935.4 $1.86 5/15/20251,944,200 shares $2.92 million -8.5%N/A9721 $1.50 4/30/20252,125,500 shares $2.13 million -38.8%N/A0 $1.00 4/15/20253,473,800 shares $3.47 million +2.3%N/A3859.8 $1.00 3/31/20253,395,900 shares $3.57 million -9.7%N/A6791.8 $1.05 3/15/20253,760,300 shares $4.93 million -28.4%N/A12534.3 $1.31 2/28/20255,248,000 shares $6.56 million +2.5%N/A681.6 $1.25 2/15/20255,118,400 shares $3.84 million -1.1%N/A25592 $0.75 1/31/20255,175,700 shares $3.88 million 0.0%N/A3450.5 $0.75 1/15/20255,176,500 shares $4.71 million -18.0%N/A51765 $0.91 Get the Latest News and Ratings for IDRSF and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Idorsia and its competitors with MarketBeat's FREE daily newsletter. 12/31/20246,314,900 shares $5.37 million -12.6%N/A501.2 $0.85 12/15/20247,229,000 shares $10.84 million -20.0%N/A675.6 $1.50 11/30/20249,037,200 shares $7.86 million +17.5%N/A3012.4 $0.87 11/15/20247,692,300 shares $7.69 million +39.5%N/A4524.9 $1.00 10/31/20245,513,600 shares $6.62 million +24.5%N/A2506.2 $1.20 10/15/20244,430,400 shares $11.47 million -2.6%N/A44304 $2.59 9/30/20244,549,800 shares $11.78 million -2.1%N/A22749 $2.59 9/15/20244,645,200 shares $12.03 million -15.5%N/A0 $2.59 8/31/20245,498,400 shares $14.24 million +0.7%N/A2893.9 $2.59 8/15/20245,457,900 shares $13.04 million -9.0%N/A54579 $2.39 7/31/20245,995,700 shares $15.29 million +2.3%N/A14989.3 $2.55 7/15/20245,859,100 shares $13.18 million -9.5%N/A14647.8 $2.25 6/30/20246,475,500 shares $15.28 million -7.0%N/A2698.1 $2.36 6/15/20246,965,900 shares $16.44 million -3.8%N/A34829.7 $2.36 5/31/20247,241,500 shares $17.67 million -5.5%N/A2194.4 $2.44 5/15/20247,663,900 shares $17.63 million +9.6%N/A12773.2 $2.30 4/30/20246,992,900 shares $13.64 million +0.7%N/A4370.6 $1.95 4/15/20246,942,800 shares $14.09 million -17.5%N/A1176.7 $2.03 3/31/20248,420,100 shares $22.23 million -7.6%N/A1295.4 $2.64 3/15/20249,112,700 shares $17.31 million -14.6%N/A91127 $1.90 2/29/202410,667,300 shares $17.60 million -8.1%N/A17778.8 $1.65 2/15/202411,609,000 shares $18.92 million 0.0%N/A3055 $1.63 1/15/202411,913,200 shares $23.84 million +0.8%N/A10830.2 $2.00 12/31/202311,821,000 shares $28.96 million -0.8%N/A2015.5 $2.45 12/15/202311,918,400 shares $28.60 million +3.5%N/A953.5 $2.40 11/30/202311,516,400 shares $24.18 million -0.1%N/A146 $2.10 11/15/202311,527,400 shares $27.09 million -4.4%N/A122 $2.35 10/31/202312,051,800 shares $22.87 million +2.7%N/A2459.6 $1.90 10/15/202311,736,600 shares $25.70 million +6.7%N/A1924 $2.19 9/30/202310,997,600 shares $30.68 million +3.0%N/A8459.7 $2.79Elon’s BIGGEST warning yet? (Ad)Tesla's About to Prove Everyone Wrong... Again Back in 2018, when Jeff Brown told everyone to buy Tesla… The "experts" said Elon was finished and Tesla was headed for bankruptcy. Now they're saying the same thing, but Jeff has uncovered Tesla's next breakthrough. Click here to see why Tesla's about to prove everyone wrong... again. 9/15/202310,674,700 shares $50.18 million +3.5%N/A6279.2 $4.70 8/31/202310,313,000 shares $57.34 million +9.7%N/A7854.5 $5.56 8/15/20239,401,800 shares $71.92 million +0.8%N/A94018 $7.65 7/31/20239,327,200 shares $71.35 million -1.3%N/A4909.1 $7.65 7/15/20239,452,800 shares $69.95 million +6.6%N/A94528 $7.40 6/30/20238,864,400 shares $66.48 million +4.8%N/A7387 $7.50 6/15/20238,456,700 shares $74.42 million -2.4%N/A650.5 $8.80 5/31/20238,666,100 shares $73.66 million -4.6%N/A28887 $8.50 5/15/20239,082,300 shares $85.37 million -3.1%N/A15137.2 $9.40 4/30/20239,369,000 shares $89.01 million -10.3%N/A10410 $9.50 4/15/202310,447,800 shares $111.58 million -2.7%N/A4353.3 $10.68 3/31/202310,732,000 shares $118.59 million +4.4%N/A17886.7 $11.05 3/15/202310,282,000 shares $131.40 million -2.8%N/A6048.2 $12.78 2/28/202310,577,200 shares $130.73 million -2.9%N/A13221.5 $12.36 2/15/202310,896,700 shares $136.21 million +1.6%N/A4035.8 $12.50 1/31/202310,722,000 shares $178.52 million +5.6%N/A8935 $16.65 1/15/202310,149,200 shares $176.29 million +0.3%N/A4228.8 $17.37 12/30/202210,118,900 shares $148.65 million -3.2%N/A4599.5 $14.69 12/15/202210,453,900 shares $151.95 million No ChangeN/A1055.9 $14.54 11/30/202210,454,300 shares $151.59 million +6.4%N/A5227.2 $14.50 11/15/20229,827,200 shares $143.92 million +7.7%N/A7019.4 $14.65 10/31/20229,127,600 shares $134.27 million +7.9%N/A3968.5 $14.71 10/15/20228,457,000 shares $117.47 million 0.0%N/A3523.8 $13.89 9/30/20228,458,400 shares $110.59 million +0.4%N/A1967.1 $13.08 9/15/20228,428,500 shares $117.58 million +3.5%N/A28095 $13.95 8/31/20228,146,200 shares $129.61 million +4.6%N/A20365.5 $15.91 8/15/20227,790,400 shares $123.59 million +0.1%N/A5992.6 $15.87 7/31/20227,784,700 shares $95.40 million +10.2%N/A474.7 $12.26 7/15/20227,062,600 shares $87.58 million +17.8%N/A4414.1 $12.40 6/30/20225,996,700 shares $85.21 million +12.6%N/A5996.7 $14.21 6/15/20225,325,000 shares $72.63 million +42.2%N/A4437.5 $13.64 5/31/20223,745,500 shares $62.70 million -7.1%N/A1135 $16.74 5/15/20224,030,500 shares $55.76 million +3.6%N/A806.1 $13.84 4/30/20223,889,500 shares $67.37 million +5.6%N/A2287.9 $17.32 4/15/20223,684,600 shares $76.05 million +6.3%N/A4094 $20.64 3/31/20223,465,200 shares $71.04 million -5.5%N/A5775.3 $20.50 3/15/20223,664,800 shares $63.36 million +30.8%N/A1665.8 $17.29 2/28/20222,802,300 shares $55.21 million -2.7%N/A1218.4 $19.70 2/15/20222,880,200 shares $63.36 million +22.6%N/A1920.1 $22.00 1/31/20222,349,700 shares $52.92 million -4.8%N/A587.4 $22.52 1/15/20222,468,400 shares $55.09 million +3.6%N/A433.1 $22.32 12/31/20212,381,600 shares $49.75 million +10.5%N/A850.6 $20.89 12/15/20212,155,700 shares $37.51 million -2.3%N/A406.7 $17.40 11/30/20212,207,100 shares $39.40 million +6.9%N/A339.6 $17.85 11/15/20212,064,700 shares $39.33 million +32.4%N/A794.1 $19.05 10/29/20211,559,000 shares $31.82 million +32.4%N/A259.8 $20.41 10/15/20211,177,600 shares $26.85 million -18.2%N/A1177.6 $22.80 9/30/20211,440,300 shares $33.98 million -7.5%N/A1800.4 $23.59 9/15/20211,556,700 shares $37.83 million +1.3%N/A114.5 $24.30 8/31/20211,536,700 shares $36.04 million -1.1%N/A1280.6 $23.45Elon’s BIGGEST warning yet? (Ad)Tesla's About to Prove Everyone Wrong... Again Back in 2018, when Jeff Brown told everyone to buy Tesla… The "experts" said Elon was finished and Tesla was headed for bankruptcy. Now they're saying the same thing, but Jeff has uncovered Tesla's next breakthrough. Click here to see why Tesla's about to prove everyone wrong... again. 8/13/20211,553,200 shares $38.21 million -2.1%N/A2588.7 $24.60 7/30/20211,586,600 shares $39.51 million +8.5%N/A881.4 $24.90 7/15/20211,462,500 shares $39.49 million -5.4%N/A281.3 $27.00 6/30/20211,546,100 shares $42.52 million +0.3%N/A5153.7 $27.50 6/15/20211,541,000 shares $46.06 million -5.3%N/A733.8 $29.89 5/28/20211,626,700 shares $40.90 million +6.6%N/A1251.3 $25.14 5/14/20211,525,500 shares $39.72 million -5.4%N/A2179.3 $26.04 4/30/20211,612,300 shares $42.69 million +4.2%N/A2687.2 $26.48 4/15/20211,547,300 shares $42.06 million -0.2%N/A7736.5 $27.18 3/31/20211,550,200 shares $41.86 million +1.4%N/A1550.2 $27.00 3/15/20211,529,500 shares $43.97 million +10.3%N/A611.8 $28.75 2/26/20211,387,300 shares $38.96 million +6.5%N/A1156.1 $28.09 2/12/20211,303,000 shares $36.87 million +10.9%N/A930.7 $28.30 1/29/20211,175,200 shares $36.65 million -8.3%N/A356.1 $31.19 1/15/20211,263,500 shares $39.64 million +7.4%N/A382.9 $31.37 12/31/20201,271,600 shares $36.49 million +0.6%N/A1059.7 $28.70 12/15/20201,263,500 shares $36.39 million +7.4%N/A382.9 $28.80 11/30/20201,176,300 shares $34.11 million -6.5%N/A490.1 $29.00 11/15/20201,258,200 shares $35.86 million -5.5%N/A12582 $28.50 10/30/20201,331,100 shares $33.98 million +10.8%N/A2662.2 $25.53 10/15/20201,201,800 shares $32.42 million +28.4%N/A6009 $26.98 9/30/2020936,000 shares $25.55 million +38.1%N/A624 $27.30 9/15/2020677,800 shares $18.64 million +6.5%N/A753.1 $27.50 8/31/2020636,500 shares $18.74 million -3.5%N/A187.2 $29.45 8/14/2020659,400 shares $19.02 million +44.5%N/A471 $28.85 7/31/2020456,500 shares $12.62 million -13.6%N/A163 $27.64 7/15/2020528,100 shares $15.31 million -21.2%N/A24.9 $28.99 6/30/2020669,900 shares $21.44 million +2.7%N/A418.7 $32.00 6/15/2020652,300 shares $19.73 million +4.0%N/A271.8 $30.25 IDRSF Short Interest - Frequently Asked Questions What is Idorsia's current short interest? Short interest is the volume of Idorsia shares that have been sold short but have not yet been covered or closed out. As of May 31st, traders have sold 1,935,400 shares of IDRSF short. Learn More on Idorsia's current short interest. What is a good short interest ratio for Idorsia? 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. IDRSF shares currently have a short interest ratio of 1,935.0. Learn More on Idorsia's short interest ratio. Is Idorsia's short interest increasing or decreasing? Idorsia saw a drop in short interest during the month of May. As of May 31st, there was short interest totaling 1,935,400 shares, a drop of 0.5% from the previous total of 1,944,200 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. 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 ($64.96 billion), Invesco QQQ ($27.88 billion), iShares Russell 2000 ETF ($19.94 billion), iShares 20+ Year Treasury Bond ETF ($9.69 billion), Strategy Incorporated ($8.58 billion), SPDR S&P Biotech ETF ($5.72 billion), Invesco S&P 500 Equal Weight ETF ($5.45 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.70 billion), Charter Communications, Inc. ($4.54 billion), and Industrial Select Sector SPDR Fund ($4.49 billion). View all of the most shorted stocks. What does it mean to sell short Idorsia stock? Short selling IDRSF is an investing strategy that aims to generate trading profit from Idorsia as its price is falling. 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 Idorsia? A short squeeze for Idorsia 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 IDRSF, which in turn drives the price of the stock up even further. How often is Idorsia'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 IDRSF, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies 3SBio Short Interest Data Algernon Pharmaceuticals Short Interest Data ALK-Abelló A/S Short Interest Data Apollomics Short Interest Data Ascentage Pharma Group International Short Interest Data Ascletis Pharma Short Interest Data Avacta Group Short Interest Data Awakn Life Sciences Short Interest Data AXIM Biotechnologies Short Interest Data BriaCell 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 (OTCMKTS:IDRSF) was last updated on 6/15/2025 by MarketBeat.com Staff From Our PartnersTrump wipes out trillions overnight…Is there anybody more powerful than Donald Trump right now? 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