IDEAYA Biosciences (IDYA) Short Interest Ratio & Short Volume $24.86 +0.15 (+0.61%) Closing price 08/26/2025 04:00 PM EasternExtended Trading$24.86 0.00 (0.00%) As of 08/26/2025 06:24 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 IDEAYA Biosciences Short Interest DataIDEAYA Biosciences (IDYA) has a short interest of 10.12 million shares, representing 12.57% of the float (the number of shares available for trading by the public). This marks a -13.80% decrease in short interest from the previous month. The short interest ratio (days to cover) is 8.8, indicating that it would take 8.8 days of the average trading volume of 987,597 shares to cover all short positions.Current Short Interest10,120,000 sharesPrevious Short Interest11,740,000 sharesChange Vs. Previous Month-13.80%Dollar Volume Sold Short$246.42 millionShort Interest Ratio8.8 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares87,640,000 sharesFloat Size80,510,000 sharesShort Percent of Float12.57%Today's Trading Volume589,699 sharesAverage Trading Volume987,597 sharesToday's Volume Vs. Average60% Short Selling IDEAYA Biosciences? Sign up to receive the latest short interest report for IDEAYA Biosciences and its competitors with MarketBeat's FREE newsletter. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartIDYA Short Interest Over TimeIDYA Days to Cover Over TimeIDYA Percentage of Float Shorted Over Time IDEAYA Biosciences Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/202510,120,000 shares $246.42 million -13.8%12.6%8.8 $24.35 7/15/202511,740,000 shares $251.59 million +1.4%14.9%9.6 $21.43 6/30/202511,580,000 shares $243.41 million +2.1%14.7%8.5 $21.02 6/15/202511,340,000 shares $251.52 million +8.0%14.4%8 $22.18 5/31/202510,500,000 shares $210.53 million -1.7%13.3%7.4 $20.05 5/15/202510,680,000 shares $184.87 million -1.8%13.6%8 $17.31 4/30/202510,880,000 shares $219.01 million +2.0%13.5%8.6 $20.13 4/15/202510,670,000 shares $181.18 million +7.2%13.2%9 $16.98 3/31/20259,950,000 shares $162.98 million +0.7%12.3%9.5 $16.38 3/15/20259,880,000 shares $183.57 million +7.5%12.2%10.8 $18.58 Get the Latest News and Ratings for IDYA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for IDEAYA Biosciences and its competitors with MarketBeat's FREE daily newsletter. 2/28/20259,190,000 shares $189.04 million +3.3%11.4%10.3 $20.57 2/15/20258,900,000 shares $186.90 million -7.1%11.0%9.4 $21.00 1/31/20259,580,000 shares $233.27 million -0.9%12.4%10.4 $24.35 1/15/20259,670,000 shares $224.92 million -3.3%12.5%10.6 $23.26 12/31/202410,000,000 shares $257 million +10.1%12.9%11.2 $25.70 12/15/20249,080,000 shares $228.73 million +1.7%11.7%9.8 $25.19 11/30/20248,930,000 shares $244.32 million -11.2%11.6%10 $27.36 11/15/202410,060,000 shares $268.00 million +8.1%13.0%12.1 $26.64 10/31/20249,310,000 shares $262.08 million -3.1%11.9%13.2 $28.15 10/15/20249,610,000 shares $296.18 million -20.5%12.6%13.8 $30.82 9/30/202412,080,000 shares $382.69 million +3.3%15.8%15 $31.68 9/15/202411,700,000 shares $438.28 million +2.5%15.3%13.3 $37.46 8/31/202411,420,000 shares $451.09 million -1.0%14.9%13.3 $39.50 8/15/202411,540,000 shares $439.79 million -0.9%15.1%11.9 $38.11 7/31/202411,640,000 shares $501.10 million -2.2%15.4%11.5 $43.05 7/15/202411,900,000 shares $492.07 million +1.6%15.9%11.8 $41.35 6/30/202411,710,000 shares $411.14 million +6.1%17.3%12.6 $35.11 6/15/202411,040,000 shares $420.73 million +2.9%16.3%14.6 $38.11 5/31/202410,730,000 shares $392.18 million -3.3%15.9%14.2 $36.55 5/15/202411,090,000 shares $470.66 million +3.8%16.4%15.5 $42.44 4/30/202410,680,000 shares $434.14 million +8.7%16.2%15.2 $40.65 4/15/20249,830,000 shares $408.04 million +4.5%14.9%13.7 $41.51 3/31/20249,410,000 shares $412.91 million +6.7%14.3%10.4 $43.88 3/15/20248,820,000 shares $390.73 million +3.0%13.6%9.6 $44.30 2/29/20248,560,000 shares $382.63 million +2.6%13.2%8.7 $44.70 2/15/20248,340,000 shares $387.31 million +4.1%12.8%8.4 $46.44 1/31/20248,010,000 shares $348.68 million +1.4%12.4%7.9 $43.53 1/15/20247,900,000 shares $313.95 million -5.5%13.0%7.2 $39.74 12/31/20238,360,000 shares $297.45 million -0.4%15.1%9.1 $35.58 12/15/20238,390,000 shares $294.24 million -2.9%15.1%9.3 $35.07Trump’s national nightmare is here (Ad)Porter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger the biggest forced rotation of capital since World War II. They reveal why Trump is mobilizing America’s tech giants… and name the two stocks most likely to soar as trillions shift behind the scenes.Watch the National Emergency broadcast here 11/30/20238,640,000 shares $271.73 million +2.4%16.1%11.1 $31.45 11/15/20238,440,000 shares $250.33 million +9.0%15.7%11.5 $29.66 10/31/20237,740,000 shares $210.30 million +15.5%14.6%10.7 $27.17 10/15/20236,700,000 shares $167.43 million -10.3%13.7%11.7 $24.99 9/30/20237,470,000 shares $201.54 million +5.2%15.2%15.4 $26.98 9/15/20237,100,000 shares $207.11 million +4.3%14.5%15 $29.17 8/31/20236,810,000 shares $199.94 million +4.5%13.3%13.5 $29.36 8/15/20236,520,000 shares $167.04 million +8.5%12.7%12.5 $25.62 7/31/20236,010,000 shares $134.38 million -1.6%11.9%11.2 $22.36 7/15/20236,110,000 shares $138.51 million +1.5%12.1%8.1 $22.67 6/30/20236,020,000 shares $141.47 million +25.7%12.0%8 $23.50 6/15/20234,790,000 shares $119.46 million +3.7%9.5%6.3 $24.94 5/31/20234,620,000 shares $105.52 million +0.9%9.2%6.6 $22.84 5/15/20234,580,000 shares $99.16 million No Change9.1%7 $21.65 10/31/20224,830,000 shares $81.58 million +0.8%N/A8.8 $16.89 10/15/20224,790,000 shares $74.58 million +12.7%N/A9.3 $15.57 9/30/20224,250,000 shares $63.41 million +17.1%N/A8.8 $14.92 9/15/20223,630,000 shares $42.69 million +4.0%N/A8.5 $11.76 8/31/20223,490,000 shares $34.31 million -1.4%11.5%9.5 $9.83 8/15/20223,540,000 shares $36.11 million -2.5%11.8%10.7 $10.20 7/31/20223,630,000 shares $54.16 million -2.2%12.1%13.2 $14.92 7/15/20223,710,000 shares $57.51 million -2.9%12.4%12.9 $15.50 6/30/20223,820,000 shares $52.72 million -4.7%12.8%12.5 $13.80 6/15/20224,010,000 shares $49.08 million -5.2%13.4%12.9 $12.24 5/31/20224,230,000 shares $47.16 million +0.2%14.1%13.1 $11.15 5/15/20224,220,000 shares $44.18 million +11.6%14.1%11.2 $10.47 4/30/20223,780,000 shares $36.25 million +5.3%12.8%10.1 $9.59 4/15/20223,590,000 shares $38.84 million +0.8%12.2%9.8 $10.82 3/31/20223,560,000 shares $39.84 million -5.8%N/A9.4 $11.19 3/15/20223,780,000 shares $44.94 million +0.3%N/A10.1 $11.89 2/28/20223,770,000 shares $49.76 million -1.6%12.8%10.3 $13.20 2/15/20223,830,000 shares $57.41 million +7.9%13.0%11.8 $14.99 1/31/20223,550,000 shares $58.82 million +10.9%12.1%11 $16.57 1/15/20223,200,000 shares $57.02 million +10.0%N/A9.9 $17.82 12/31/20212,910,000 shares $68.79 million +17.8%9.3%9.4 $23.64 12/15/20212,470,000 shares $54.56 million -1.6%7.9%7.6 $22.09 11/30/20212,510,000 shares $55.22 million No Change8.0%7.4 $22.00 11/15/20212,510,000 shares $58.66 million +2.5%8.0%7.7 $23.37 10/29/20212,450,000 shares $52.53 million +6.1%7.8%8.1 $21.44 10/15/20212,310,000 shares $53.43 million -11.2%7.4%7.4 $23.13 9/30/20212,600,000 shares $66.27 million +31.3%8.3%8.1 $25.49 9/15/20211,980,000 shares $51.68 million -6.2%6.3%5.7 $26.10 8/31/20212,110,000 shares $49.59 million -7.5%6.8%7.2 $23.50 8/13/20212,280,000 shares $53.44 million -1.3%7.3%9.2 $23.44 7/30/20212,310,000 shares $56.60 million +22.2%7.7%9.7 $24.50 7/15/20211,890,000 shares $35.29 million +24.3%6.6%9 $18.67 6/30/20211,520,000 shares $31.90 million +22.6%5.3%7.3 $20.99 6/15/20211,240,000 shares $27.34 million -1.6%5.0%8.3 $22.05 5/28/20211,260,000 shares $25.39 million +5.9%5.1%7.9 $20.15 5/14/20211,190,000 shares $22.34 million +11.2%N/A6.6 $18.77Trump’s national nightmare is here (Ad)Porter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger the biggest forced rotation of capital since World War II. They reveal why Trump is mobilizing America’s tech giants… and name the two stocks most likely to soar as trillions shift behind the scenes.Watch the National Emergency broadcast here 4/30/20211,070,000 shares $22.00 million +67.7%N/A5.9 $20.56 4/15/2021637,900 shares $11.99 million +5.5%N/A0 $18.79 3/31/2021604,600 shares $13.85 million +1.9%N/A2.8 $22.90 3/15/2021593,500 shares $13.62 million -16.3%N/A2.8 $22.95 2/26/2021709,000 shares $12.89 million +2.3%N/A3.3 $18.18 2/12/2021693,300 shares $13.37 million +0.5%N/A3.3 $19.29 1/29/2021689,700 shares $11.73 million -1.4%3.6%3.1 $17.01 1/15/2021699,700 shares $11.43 million -16.5%3.7%2.8 $16.34 12/31/2020838,000 shares $10.68 million +21.6%4.4%3.9 $12.75 12/15/2020689,100 shares $9.59 million -4.5%3.7%3.8 $13.92 11/30/2020721,200 shares $9.78 million -38.9%4.2%4.1 $13.56 11/15/20201,180,000 shares $15.76 million +62.1%6.9%7 $13.36 10/30/2020728,000 shares $8.99 million -1.0%4.5%4.4 $12.35 10/15/2020735,000 shares $9.99 million +7.0%4.5%4.4 $13.59 9/30/2020687,000 shares $8.63 million +17.9%N/A4 $12.56 9/15/2020582,700 shares $7.45 million +1.4%3.6%2.6 $12.79 8/31/2020574,800 shares $6.96 million -2.8%3.5%1.7 $12.10 IDYA Short Interest - Frequently Asked Questions What is IDEAYA Biosciences' current short interest? Short interest is the volume of IDEAYA Biosciences shares that have been sold short but have not yet been closed out or covered. As of July 31st, traders have sold 10,120,000 shares of IDYA short. 12.57% of IDEAYA Biosciences' shares are currently sold short. Learn More on IDEAYA Biosciences' current short interest. What is a good short interest ratio for IDEAYA Biosciences? 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. IDYA shares currently have a short interest ratio of 9.0. Learn More on IDEAYA Biosciences's short interest ratio. Which institutional investors are shorting IDEAYA Biosciences? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of IDEAYA Biosciences: Hudson Bay Capital Management LP, Hudson Bay Capital Management LP, and Caption Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for IDEAYA Biosciences? 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. 12.57% of IDEAYA Biosciences' floating shares are currently sold short. Is IDEAYA Biosciences' short interest increasing or decreasing? IDEAYA Biosciences saw a drop in short interest in July. As of July 31st, there was short interest totaling 10,120,000 shares, a drop of 13.8% from the previous total of 11,740,000 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 IDEAYA Biosciences' float size? IDEAYA Biosciences currently has issued a total of 87,640,000 shares. Some of IDEAYA Biosciences' 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. IDEAYA Biosciences currently has a public float of 80,510,000 shares. How does IDEAYA Biosciences' short interest compare to its competitors? 12.57% of IDEAYA Biosciences' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to IDEAYA Biosciences: Verona Pharma PLC American Depositary Share (3.05%), Roivant Sciences Ltd. (9.55%), Grifols, S.A. (1.21%), Revolution Medicines, Inc. (8.12%), Rhythm Pharmaceuticals, Inc. (7.23%), Legend Biotech Corporation Sponsored ADR (4.26%), Avidity Biosciences, Inc. (13.10%), Axsome Therapeutics, Inc. (9.47%), Abivax SA Sponsored ADR (2.78%), Nuvalent, Inc. (11.99%), 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 ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short IDEAYA Biosciences stock? Short selling IDYA is an investing strategy that aims to generate trading profit from IDEAYA Biosciences as its price is falling. IDYA shares are trading up $0.15 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 IDEAYA Biosciences? A short squeeze for IDEAYA Biosciences 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 IDYA, which in turn drives the price of the stock up even further. How often is IDEAYA Biosciences' 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 IDYA, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies Verona Pharma PLC American Depositary Share Short Interest Roivant Sciences Short Interest Grifols Short Interest Revolution Medicines Short Interest Rhythm Pharmaceuticals Short Interest Legend Biotech Short Interest Avidity Biosciences Short Interest Axsome Therapeutics Short Interest Abivax Short Interest Nuvalent Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:IDYA) was last updated on 8/27/2025 by MarketBeat.com Staff From Our PartnersBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. 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