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NovoCure (NVCR) Short Interest Ratio & Short Volume

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$17.94 +0.30 (+1.70%)
As of 04:00 PM Eastern
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NovoCure Short Interest Overview

As of August 14, 2026, NovoCure (NVCR) had a short interest of 9.17 million shares sold short, representing 8.43% of the public float. This marks a -9.54% decrease in short interest since the prior report. The short interest ratio (days to cover) is 8.4, meaning it would take 8.4 days of the average trading volume of 1.20 million shares to cover all short positions.

Current Short Interest
9,170,033 shares
Previous Short Interest
10,137,546 shares
Change Vs. Previous Month
-9.54%
Dollar Volume Sold Short
$155.43 million
Short Interest Ratio
8.4 Days to Cover
Last Record Date
August 14, 2026
Outstanding Shares
116,450,000 shares
Short Percent of Float
8.43%
Today's Trading Volume
732,040 shares
Average Trading Volume
1,203,694 shares
Today's Volume Vs. Average
61%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

NVCR Short Interest Over Time

NVCR Days to Cover Over Time

NVCR Percentage of Float Shorted Over Time

NovoCure Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
8/14/20269,170,033 shares $155.43 million -9.5%8.4%8.37 $16.95
7/31/202610,137,546 shares $150.44 million -11.5%9.3%4.89 $14.84
7/15/202611,460,044 shares $183.70 million -3.6%10.5%7.49 $16.03
6/30/202611,884,203 shares $180.05 million +23.1%10.9%6.18 $15.15
6/15/20269,650,837 shares $169.85 million +5.4%8.8%5.98 $17.60
5/29/20269,153,119 shares $155.97 million +7.2%8.4%6.92 $17.04
5/15/20268,541,120 shares $150.15 million +22.6%7.8%4.28 $17.58
4/30/20266,967,267 shares $105.97 million -20.0%6.4%4.07 $15.21
4/15/20268,707,784 shares $105.97 million -3.8%8.0%8.24 $12.17
3/31/20269,055,343 shares $98.70 million +6.3%8.2%7.07 $10.90
3/13/20268,518,264 shares $102.73 million -6.7%7.9%6.04 $12.06
2/27/20269,127,904 shares $124.78 million +2.6%8.5%3.55 $13.67
2/13/20268,899,112 shares $97.80 million +11.7%8.1%2.42 $10.99
1/30/20267,970,704 shares $98.84 million +7.2%7.5%7.69 $12.40
1/15/20267,432,511 shares $102.57 million -10.8%7.0%5.59 $13.80
12/31/20258,333,839 shares $107.76 million +20.0%7.9%7.82 $12.93
12/15/20256,943,501 shares $90.06 million +1.7%6.6%3.07 $12.97
11/28/20256,827,285 shares $87.49 million +14.3%6.5%4.68 $12.82
11/14/20255,971,436 shares $67.60 million +4.6%5.6%3.19 $11.32
10/31/20255,711,586 shares $73.17 million +9.0%5.4%4.61 $12.81
10/15/20255,240,000 shares $74.30 million -8.9%5.3%3 $14.18
9/30/20255,750,000 shares $74.29 million -2.4%5.8%3.3 $12.92
9/15/20255,890,000 shares $74.92 million -1.3%5.9%3.6 $12.72
8/31/20255,970,000 shares $73.61 million +8.4%6.0%3.7 $12.33
8/15/20255,510,000 shares $64.63 million +5.6%5.6%3.3 $11.73
7/31/20255,220,000 shares $60.40 million +5.9%5.3%3.3 $11.57
7/15/20254,930,000 shares $82.77 million -5.7%5.0%3.8 $16.79
6/30/20255,230,000 shares $93.09 million +5.9%5.3%4.3 $17.80
6/15/20254,940,000 shares $86.70 million +6.5%5.0%4.4 $17.55
5/31/20254,640,000 shares $87.56 million -14.1%4.7%4.5 $18.87
5/15/20255,400,000 shares $94.99 million -0.7%5.5%5.7 $17.59
4/30/20255,440,000 shares $98.68 million +5.8%5.5%6 $18.14
4/15/20255,140,000 shares $84.60 million -5.2%5.2%5.8 $16.46
3/31/20255,420,000 shares $96.58 million +0.4%5.5%6 $17.82
3/15/20255,400,000 shares $105.25 million +3.5%5.5%5.7 $19.49
2/28/20255,220,000 shares $99.55 million +0.4%5.3%5 $19.07
2/15/20255,200,000 shares $116.90 million +4.6%5.3%4.4 $22.48
1/31/20254,970,000 shares $121.86 million +2.1%5.1%4.2 $24.52
1/15/20254,870,000 shares $128.32 million -9.8%5.0%4 $26.35
12/31/20245,400,000 shares $160.92 million +4.1%5.6%4 $29.80
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12/15/20245,190,000 shares $173.40 million -7.8%5.3%4 $33.41
11/30/20245,630,000 shares $112.83 million -0.7%5.8%4.5 $20.04
11/15/20245,670,000 shares $91.34 million -4.9%5.8%5.5 $16.11
10/31/20245,960,000 shares $90.47 million +3.1%6.1%5.6 $15.18
10/15/20245,780,000 shares $102.77 million +5.3%5.9%5.1 $17.78
9/30/20245,490,000 shares $85.81 million -10.2%5.6%5.4 $15.63
9/15/20246,110,000 shares $113.46 million -1.9%6.3%4.6 $18.57
8/31/20246,230,000 shares $121.11 million -3.9%6.4%4.5 $19.44
8/15/20246,480,000 shares $122.54 million -14.7%6.7%4.7 $18.91
7/31/20247,600,000 shares $173.05 million +8.3%7.8%5 $22.77
7/15/20247,020,000 shares $126.29 million +13.4%7.3%4.8 $17.99
6/30/20246,190,000 shares $106.03 million +10.7%6.4%4.2 $17.13
6/15/20245,590,000 shares $119.29 million +2.0%5.8%3.9 $21.34
5/31/20245,480,000 shares $120.61 million -2.8%5.7%3.9 $22.01
5/15/20245,640,000 shares $118.72 million No Change5.8%4.1 $21.05
4/30/20245,640,000 shares $69.03 million -6.6%5.8%4.4 $12.24
4/15/20246,040,000 shares $76.83 million +20.6%6.3%4.8 $12.72
3/31/20245,010,000 shares $78.31 million -9.6%5.2%3.6 $15.63
3/15/20245,540,000 shares $77.45 million -1.8%5.8%4.5 $13.98
2/29/20245,640,000 shares $86.35 million -8.0%5.9%4.4 $15.31
2/15/20246,130,000 shares $97.65 million +6.2%6.3%4.6 $15.93
1/31/20245,770,000 shares $80.32 million -17.0%6.0%4.2 $13.92
1/15/20246,950,000 shares $93.06 million +0.3%7.2%4.8 $13.39
12/31/20236,930,000 shares $103.46 million -2.8%7.2%5 $14.93
12/15/20237,130,000 shares $96.68 million -10.5%7.4%5 $13.56
11/30/20237,970,000 shares $97.79 million -5.0%8.3%5.5 $12.27
11/15/20238,390,000 shares $106.39 million -6.1%8.7%4.5 $12.68
10/31/20238,930,000 shares $118.77 million +6.3%9.2%4.8 $13.30
10/15/20238,400,000 shares $119.36 million +2.8%8.7%4.5 $14.21
9/30/20238,170,000 shares $131.95 million +7.8%8.5%4.2 $16.15
9/15/20237,580,000 shares $146.29 million -17.7%7.9%4.3 $19.30
8/31/20239,210,000 shares $203.17 million -1.8%9.6%5 $22.06
8/15/20239,380,000 shares $293.59 million +5.9%9.7%5.7 $31.30
7/31/20238,860,000 shares $289.19 million -0.2%N/A5.7 $32.64
7/15/20238,880,000 shares $354.67 million +2.0%N/A6.4 $39.94
6/30/20238,710,000 shares $361.47 million +3.7%N/A6.9 $41.50
6/15/20238,400,000 shares $368.76 million +4.0%N/A6.9 $43.90
5/31/20238,080,000 shares $580.22 million -1.2%N/A7.5 $71.81
5/15/20238,180,000 shares $636.57 million +5.8%N/A12.4 $77.82
4/30/20237,730,000 shares $509.41 million -1.9%N/A12.1 $65.90
4/15/20237,880,000 shares $494.23 million +2.1%7.6%12 $62.72
3/31/20237,720,000 shares $464.28 million -3.3%7.5%9.5 $60.14
3/15/20237,980,000 shares $523.17 million -8.4%7.7%7.8 $65.56
2/28/20238,710,000 shares $670.41 million +3.4%N/A9 $76.97
2/15/20238,420,000 shares $740.71 million +4.5%8.2%8.8 $87.97
1/31/20238,060,000 shares $734.91 million +3.9%7.8%8.5 $91.18
1/15/20237,760,000 shares $729.36 million -2.4%7.5%8.4 $93.99
12/30/20227,950,000 shares $583.13 million +2.3%7.7%9.4 $73.35
12/15/20227,770,000 shares $579.56 million -4.0%7.5%14.8 $74.59
11/30/20228,090,000 shares $621.64 million -1.3%7.9%16.6 $76.84
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11/15/20228,200,000 shares $688.80 million -1.2%8.0%17.6 $84.00
10/31/20228,300,000 shares $586.48 million +4.3%8.1%18.2 $70.66
10/15/20227,960,000 shares $582.11 million +5.4%7.7%16.5 $73.13
9/30/20227,550,000 shares $573.65 million +0.3%7.3%16.7 $75.98
9/15/20227,530,000 shares $669.79 million +2.9%7.3%16 $88.95
8/31/20227,320,000 shares $601.19 million +5.5%7.1%12.9 $82.13
8/15/20226,940,000 shares $585.18 million +2.4%6.8%11.3 $84.32
7/31/20226,780,000 shares $460.97 million -1.2%6.6%10.1 $67.99
7/15/20226,860,000 shares $497.08 million +1.8%7.3%10.4 $72.46
6/30/20226,740,000 shares $468.43 million -11.1%7.5%10 $69.50
6/15/20227,580,000 shares $461.17 million -6.8%8.4%11.3 $60.84
5/31/20228,130,000 shares $653.49 million -0.3%9.0%13.5 $80.38
5/15/20228,150,000 shares $531.71 million +4.5%9.0%14 $65.24
4/30/20227,800,000 shares $597.32 million +5.1%8.7%13.2 $76.58
4/15/20227,420,000 shares $625.06 million -0.7%8.3%12.1 $84.24
3/31/20227,470,000 shares $618.89 million +2.8%8.3%10.9 $82.85
3/15/20227,270,000 shares $471.90 million +1.4%8.1%10 $64.91
2/28/20227,170,000 shares $586.94 million +0.1%8.0%10.1 $81.86
2/15/20227,160,000 shares $604.30 million +8.5%8.0%9.6 $84.40
1/31/20226,600,000 shares $453.09 million +5.1%7.4%8.7 $68.65
1/15/20226,280,000 shares $434.07 million +8.3%7.1%8.5 $69.12
12/31/20215,800,000 shares $435.46 million No Change6.5%8.9 $75.08
12/15/20215,800,000 shares $487.84 million -4.5%6.5%9.8 $84.11
11/30/20216,070,000 shares $568.39 million +5.8%6.8%10.7 $93.64
11/15/20215,740,000 shares $645.29 million +7.9%6.4%11.1 $112.42
10/29/20215,320,000 shares $545.67 million -0.4%6.0%11.9 $102.57
10/15/20215,340,000 shares $599.25 million -1.7%6.0%10.2 $112.22
9/30/20215,430,000 shares $630.80 million +0.7%6.1%10.4 $116.17
9/15/20215,390,000 shares $683.61 million -0.2%6.1%9 $126.83

NVCR Short Interest - Frequently Asked Questions

Short interest is the volume of NovoCure shares that have been sold short but have not yet been covered or closed out. As of August 14th, investors have sold 9,170,033 shares of NVCR short. 8.43% of NovoCure's shares are currently sold short. Learn More on NovoCure's 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. NVCR shares currently have a short interest ratio of 8.4. Learn More on NovoCure'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. 8.43% of NovoCure's floating shares are currently sold short.

NovoCure saw a decline in short interest in the month of August. As of August 14th, there was short interest totaling 9,170,033 shares, a decline of 9.5% from the previous total of 10,137,546 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.

8.43% of NovoCure's shares are currently sold short. Here is how the short interest of companies in the industry of "healthcare equipment" compare to NovoCure: Teleflex Incorporated (11.49%), MiniMed Group Inc (2.10%), Haemonetics Corporation (6.20%), LivaNova PLC (8.60%), Integer Holdings Corporation (8.48%), iRhythm Technologies (8.58%), Pulse Biosciences, Inc (15.37%), TransMedics Group, Inc. (24.58%), AxoGen, Inc. (6.42%), Butterfly Network, Inc. (15.49%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.57 billion), Invesco QQQ ($46.97 billion), iShares Russell 2000 ETF ($24.02 billion), Nebius Group N.V. ($15.37 billion), Sandisk Corporation ($12.60 billion), SPDR S&P Biotech ETF ($12.14 billion), Western Digital Corporation ($10.32 billion), iShares 20+ Year Treasury Bond ETF ($8.38 billion), VanEck Semiconductor ETF ($7.62 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.07 billion). View all of the most shorted stocks.

Short selling NVCR is an investing strategy that aims to generate trading profit from NovoCure as its price is falling. NVCR shares are trading up $0.30 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 NovoCure 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 NVCR, 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 NVCR, twice per month. The most recent reporting period available is August, 14 2026.

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

  • 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:NVCR is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/25/2026. FINRA publishes updated short interest twice a month.
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