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IDEAYA Biosciences (IDYA) Short Interest Ratio & Short Volume

IDEAYA Biosciences logo
$38.46 -0.41 (-1.05%)
As of 02:22 PM Eastern
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IDEAYA Biosciences Short Interest Overview

As of July 31, 2026, IDEAYA Biosciences (IDYA) had a short interest of 10.11 million shares sold short, representing 12.08% of the public float. This marks a 5.64% increase in short interest since the prior report. The short interest ratio (days to cover) is 13.2, meaning it would take 13.2 days of the average trading volume of 1.07 million shares to cover all short positions.

Current Short Interest
10,113,206 shares
Previous Short Interest
9,573,580 shares
Change Vs. Previous Month
5.64%
Dollar Volume Sold Short
$359.02 million
Short Interest Ratio
13.2 Days to Cover
Last Record Date
July 31, 2026
Outstanding Shares
87,860,000 shares
Short Percent of Float
12.08%
Today's Trading Volume
354,435 shares
Average Trading Volume
1,072,187 shares
Today's Volume Vs. Average
33%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

IDYA Short Interest Over Time

IDYA Days to Cover Over Time

IDYA Percentage of Float Shorted Over Time

IDEAYA Biosciences Tesla Short Interest History & Recent Changes

Export
Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
7/31/202610,113,206 shares $359.02 million +5.6%12.1%13.19 $35.50
7/15/20269,573,580 shares $351.73 million -7.4%11.4%8.61 $36.74
6/30/202610,334,969 shares $385.18 million -2.8%12.3%6.08 $37.27
6/15/202610,629,114 shares $321.32 million -6.3%12.7%7.53 $30.23
5/29/202611,338,312 shares $334.14 million -3.1%13.5%16.34 $29.47
5/15/202611,704,298 shares $330.18 million 0.0%14.0%13.96 $28.21
4/30/202611,705,770 shares $340.64 million +10.8%14.0%11.18 $29.10
4/15/202610,564,351 shares $339.96 million +8.2%12.6%4.53 $32.18
3/31/20269,761,427 shares $325.25 million +0.4%11.7%9.35 $33.32
3/13/20269,723,966 shares $321.77 million -0.1%11.4%11.38 $33.09
2/27/20269,732,265 shares $313.38 million -2.6%11.4%12.67 $32.20
2/13/20269,995,587 shares $302.57 million +7.3%11.9%11.52 $30.27
1/30/20269,316,949 shares $299.91 million +7.0%10.9%11.59 $32.19
1/15/20268,705,576 shares $313.92 million +5.6%10.2%8.38 $36.06
12/31/20258,247,135 shares $285.10 million +14.2%9.6%9.47 $34.57
12/15/20257,223,004 shares $241.03 million -6.4%8.5%7.49 $33.37
11/28/20257,717,025 shares $272.49 million -3.9%9.0%9.14 $35.31
11/14/20258,033,340 shares $258.19 million +2.2%9.4%8.52 $32.14
10/31/20257,859,556 shares $250.41 million -7.3%9.2%5.71 $31.86
10/15/20258,480,000 shares $240.66 million +1.1%10.5%7 $28.38
9/30/20258,390,000 shares $228.29 million -11.3%10.4%7.4 $27.21
9/15/20259,460,000 shares $232.05 million -6.2%11.7%8.5 $24.53
8/31/202510,090,000 shares $247.71 million +4.6%12.5%9.3 $24.55
8/15/20259,650,000 shares $234.78 million -4.6%12.0%9 $24.33
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
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
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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 $35.07
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
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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

IDYA Short Interest - Frequently Asked Questions

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, investors have sold 10,113,206 shares of IDYA short. 12.08% of IDEAYA Biosciences' shares are currently sold short. Learn More on IDEAYA Biosciences' current short interest.

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 13.2. Learn More on IDEAYA Biosciences's short interest ratio.

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. 12.08% of IDEAYA Biosciences' floating shares are currently sold short.

IDEAYA Biosciences saw a increase in short interest in July. As of July 31st, there was short interest totaling 10,113,206 shares, an increase of 5.6% from the previous total of 9,573,580 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.

12.08% of IDEAYA Biosciences' shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to IDEAYA Biosciences: Exelixis, Inc. (11.74%), Arrowhead Pharmaceuticals, Inc. (7.11%), Madrigal Pharmaceuticals, Inc. (10.33%), Summit Therapeutics PLC (27.54%), Halozyme Therapeutics, Inc. (12.67%), Abivax SA Sponsored ADR (5.95%), Praxis Precision Medicines, Inc. (13.50%), Nuvalent, Inc. (0.95%), Krystal Biotech, Inc. (12.45%), Protagonist Therapeutics, Inc. (12.37%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($70.50 billion), Invesco QQQ ($50.36 billion), iShares Russell 2000 ETF ($21.20 billion), Western Digital Corporation ($13.40 billion), SPDR S&P Biotech ETF ($11.59 billion), Nebius Group N.V. ($11.46 billion), iShares 20+ Year Treasury Bond ETF ($7.84 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($7.51 billion), iShares Semiconductor ETF ($6.37 billion), and Financial Select Sector SPDR Fund ($6.34 billion). View all of the most shorted stocks.

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 down $0.66 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.

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.

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 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like IDYA:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


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Short Interest Tools

Short interest data for NASDAQ:IDYA is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/11/2026. FINRA publishes updated short interest twice a month.
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