NuCana (NCNA) Short Interest Ratio & Short Volume $0.05 0.00 (0.00%) Closing price 04:00 PM EasternExtended Trading$0.05 0.00 (-0.60%) As of 07:51 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 EventsHeadlinesOwnershipSEC FilingsShort InterestTrendsBuy This Stock NuCana Short Interest DataNuCana (NCNA) has a short interest of 4.53 million shares, representing 108.35% of the float (the number of shares available for trading by the public). This marks a -1.74% decrease in short interest from the previous month. The short interest ratio (days to cover) is 0.0, indicating that it would take 0.0 days of the average trading volume of 49.95 million shares to cover all short positions.Current Short Interest4,530,000 sharesPrevious Short Interest4,610,000 sharesChange Vs. Previous Month-1.74%Dollar Volume Sold Short$260.02 thousandShort Interest Ratio0.0 Days to CoverLast Record DateJune 30, 2025Outstanding Shares6,077,000 sharesShort Percent of Float108.35%Today's Trading Volume82,385,634 sharesAverage Trading Volume49,953,467 sharesToday's Volume Vs. Average165% Short Selling NuCana? Sign up to receive the latest short interest report for NuCana and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartNCNA Short Interest Over TimeNCNA Days to Cover Over TimeNCNA Percentage of Float Shorted Over Time NuCana Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/30/20254,530,000 shares $260.02 thousand -1.7%108.3%0 $0.06 6/15/20254,610,000 shares $529.69 thousand +66.4%80.9%0 $0.11 5/31/20252,770,000 shares $97.23 thousand -9.2%48.6%0 $0.04 5/15/20253,050,000 shares $162.87 thousand +408.1%57.2%0.1 $0.05 4/30/2025600,300 shares $354.18 thousand +5,165.8%11.3%0.1 $0.59 4/15/202511,400 shares $9.74 thousand -90.2%0.2%0.1 $0.85 3/31/2025115,900 shares $101.16 thousand +1,217.1%2.2%1.4 $0.87 3/15/20258,800 shares $6.69 thousand -49.1%0.2%0.1 $0.76 2/28/202517,300 shares $16.78 thousand -2.3%0.5%0.2 $0.97 2/15/202517,700 shares $16.11 thousand -66.9%0.5%0.1 $0.91 Get the Latest News and Ratings for NCNA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for NuCana and its competitors with MarketBeat's FREE daily newsletter. 1/31/202553,500 shares $54.57 thousand -56.0%1.5%0.4 $1.02 1/15/2025121,700 shares $131.45 thousand -15.7%3.3%0.8 $1.08 12/31/2024144,300 shares $171.72 thousand +73.9%3.9%0.8 $1.19 12/15/202483,000 shares $105.41 thousand +36.5%2.3%0.3 $1.27 11/30/202460,800 shares $79.04 thousand -3.7%1.7%0 $1.30 11/15/202463,100 shares $94.02 thousand -0.6%3.0%0 $1.49 10/31/202463,500 shares $102.87 thousand -35.4%3.0%0 $1.62 10/15/202498,300 shares $184.80 thousand -62.7%4.7%0.1 $1.88 9/30/2024263,600 shares $606.28 thousand +321.8%12.5%0.2 $2.30 9/15/202462,500 shares $158.75 thousand +0.2%3.2%0.1 $2.54 8/31/202462,400 shares $228.38 thousand +41.5%3.2%0.5 $3.66 8/15/202444,100 shares $145.09 thousand -7.9%2.3%0.4 $3.29 7/31/202447,900 shares $174.36 thousand +42.6%2.4%1.7 $3.64 7/15/202433,600 shares $104.16 thousand -2.6%1.7%1.2 $3.10 6/30/202434,500 shares $87.98 thousand +3.0%1.8%1.4 $2.55 6/15/202433,500 shares $100.50 thousand -10.4%1.7%1.3 $3.00 5/31/202437,400 shares $135.01 thousand +16.2%1.9%0.5 $3.61 5/15/202432,200 shares $122.36 thousand +41.9%1.7%0.4 $3.80 4/30/202422,700 shares $91.03 thousand +144.1%1.2%0.3 $4.01 4/15/20249,300 shares $41.39 thousand -94.4%0.5%0.1 $4.45 3/31/2024164,900 shares $42.87 thousand -93.4%0.4%0.1 $0.26 3/15/20242,480,000 shares $864.78 thousand +2,616.3%5.7%1.6 $0.35 2/29/202491,300 shares $29.22 thousand +293.5%0.2%0.6 $0.32 2/15/202423,200 shares $7.31 thousand -29.9%0.1%0.2 $0.32 1/31/202433,100 shares $9.93 thousand -16.2%0.1%0.3 $0.30 1/15/202439,500 shares $11.81 thousand -34.4%0.1%0.4 $0.30 12/31/202360,200 shares $17.81 thousand -32.7%0.1%0.4 $0.30 12/15/202389,500 shares $31.31 thousand -40.9%0.2%0.7 $0.35 11/30/2023151,400 shares $62.38 thousand -11.7%0.4%2 $0.41 11/15/2023171,400 shares $70.10 thousand +3.1%0.4%2.5 $0.41The 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. 10/31/2023166,200 shares $81.44 thousand +101.2%0.4%2.2 $0.49 10/15/202382,600 shares $55.33 thousand +111.8%0.2%1.1 $0.67 9/30/202339,000 shares $23.79 thousand -26.7%0.1%0.9 $0.61 9/15/202353,200 shares $32.84 thousand -3.5%0.1%1.1 $0.62 8/31/202355,100 shares $39.67 thousand -45.5%0.1%1.1 $0.72 8/15/2023101,100 shares $66.93 thousand +13.1%0.2%2.1 $0.66 7/31/202389,400 shares $67.94 thousand -0.7%0.2%2.2 $0.76 7/15/202390,000 shares $70.38 thousand +23.0%0.2%2.2 $0.78 6/30/202373,200 shares $57.83 thousand -4.3%0.2%1.8 $0.79 6/15/202376,500 shares $57.38 thousand -20.4%0.2%1 $0.75 5/31/202396,100 shares $80.20 thousand +23.2%0.2%1 $0.83 5/15/202378,000 shares $61.93 thousand +67.7%0.2%0.7 $0.79 4/30/202346,500 shares $39.48 thousand -45.0%0.1%0.4 $0.85 4/15/202384,600 shares $75.29 thousand -1.3%0.2%0.7 $0.89 3/31/202385,700 shares $82.28 thousand -27.4%0.2%0.6 $0.96 3/15/2023118,000 shares $142.78 thousand +55.5%0.3%0.8 $1.21 2/28/202375,900 shares $110.06 thousand -1.8%0.2%0.7 $1.45 2/15/202377,300 shares $128.32 thousand +6.0%0.2%0.7 $1.66 1/31/202372,900 shares $110.08 thousand -63.2%0.2%0.8 $1.51 1/15/2023198,200 shares $287.39 thousand +213.6%0.5%2.2 $1.45 12/30/202263,200 shares $41.71 thousand +21.3%0.2%0.7 $0.66 12/15/202252,100 shares $38.03 thousand -21.7%0.1%0.7 $0.73 11/30/202266,500 shares $56.78 thousand -33.8%0.2%0.8 $0.85 11/15/2022100,400 shares $102.41 thousand -31.6%0.2%1.2 $1.02 10/31/2022146,700 shares $146.70 thousand -16.2%0.3%1.6 $1.00 10/15/2022175,000 shares $184.26 thousand -9.1%0.4%1.4 $1.05 9/30/2022192,600 shares $201.27 thousand -24.0%0.5%0.6 $1.05 9/15/2022253,300 shares $387.55 thousand +15.4%0.6%0.8 $1.53 8/31/2022219,500 shares $318.28 thousand +15.0%0.5%0.7 $1.45 8/15/2022190,800 shares $311.00 thousand -34.3%0.4%0.6 $1.63 7/31/2022290,300 shares $534.15 thousand -39.2%0.7%0.9 $1.84 7/15/2022477,100 shares $620.23 thousand +179.8%1.1%1.5 $1.30 6/30/2022170,500 shares $123.61 thousand -35.5%0.4%1 $0.73 6/15/2022264,400 shares $187.72 thousand -16.5%0.6%1.6 $0.71 5/31/2022316,600 shares $186.13 thousand -25.2%0.8%1.1 $0.59 5/15/2022423,500 shares $249.87 thousand +2.9%1.0%0.9 $0.59 4/30/2022411,600 shares $289.35 thousand -23.3%1.0%0.8 $0.70 4/15/2022536,800 shares $526.06 thousand -22.3%1.3%1 $0.98 3/31/2022690,400 shares $689.71 thousand -15.4%1.6%1.4 $1.00 3/15/2022816,100 shares $697.77 thousand -1.0%1.9%1.6 $0.86 2/28/2022824,300 shares $2.23 million -10.1%1.9%1.8 $2.70 2/15/2022917,100 shares $3.00 million -10.1%2.2%3.4 $3.27 1/31/20221,020,000 shares $2.91 million +4.6%2.4%3.3 $2.85 1/15/2022974,900 shares $2.79 million +15.7%2.3%3 $2.86 12/31/2021842,800 shares $2.01 million -15.4%2.0%2 $2.38 12/15/2021996,300 shares $2.38 million -6.0%2.3%0.5 $2.39 11/30/20211,060,000 shares $2.89 million -6.2%2.5%0.6 $2.73 11/15/20211,130,000 shares $3.24 million -6.6%2.7%0.6 $2.87 10/29/20211,210,000 shares $2.93 million -19.9%2.8%0.7 $2.42 10/15/20211,510,000 shares $4.03 million +108.9%3.5%0.8 $2.67The 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. 9/30/2021723,000 shares $1.87 million -19.0%1.7%0.4 $2.58 9/15/2021892,100 shares $2.15 million -12.5%2.1%2.4 $2.41 8/31/20211,020,000 shares $2.71 million +21.6%2.4%1.9 $2.66 8/13/2021838,700 shares $1.75 million -5.1%2.0%1.3 $2.09 7/30/2021883,400 shares $1.87 million +10.7%2.0%1.3 $2.12 7/15/2021798,300 shares $1.88 million +61.0%1.9%1.3 $2.35 6/30/2021495,900 shares $1.37 million +33.4%1.2%0.8 $2.77 6/15/2021371,700 shares $1.07 million +1.2%0.9%0.7 $2.88 5/28/2021367,200 shares $1.12 million +11.5%0.9%0.8 $3.06 5/14/2021329,200 shares $954.68 thousand +39.3%N/A1.5 $2.90 4/30/2021236,300 shares $1.05 million +47.6%N/A1 $4.43 4/15/2021160,100 shares $707.64 thousand +7.2%N/A0.6 $4.42 3/31/2021149,300 shares $733.06 thousand +24.8%N/A0.3 $4.91 3/15/2021119,600 shares $674.54 thousand +55.7%N/A0.2 $5.64 2/26/202176,800 shares $417.79 thousand +78.6%N/A0.1 $5.44 2/12/202143,000 shares $256.71 thousand -57.7%N/A0.1 $5.97 1/29/2021101,600 shares $572.01 thousand -18.7%N/A0.2 $5.63 1/15/2021124,900 shares $811.85 thousand +157.5%N/A0.3 $6.50 12/31/202048,500 shares $218.74 thousand -19.0%N/A0.2 $4.51 12/15/202059,900 shares $270.15 thousand -18.8%N/A0.3 $4.51 11/30/202073,800 shares $332.10 thousand -40.9%0.3%0.3 $4.50 11/15/2020124,800 shares $590.30 thousand -16.2%0.5%0.6 $4.73 10/30/2020149,000 shares $740.53 thousand -73.1%0.5%0.7 $4.97 10/15/2020553,700 shares $2.71 million -55.4%1.9%2.3 $4.89 9/30/20201,240,000 shares $6.41 million -57.1%4.3%5.4 $5.17 9/15/20202,890,000 shares $15.90 million +1.1%9.6%14.1 $5.50 8/31/20202,860,000 shares $15.84 million +10.0%9.5%24.5 $5.54 8/14/20202,600,000 shares $14.14 million +2.0%8.6%22.9 $5.44 7/31/20202,550,000 shares $14.15 million +2.4%8.6%25.2 $5.55 NCNA Short Interest - Frequently Asked Questions What is NuCana's current short interest? Short interest is the volume of NuCana shares that have been sold short but have not yet been covered or closed out. As of June 30th, traders have sold 4,530,000 shares of NCNA short. 108.35% of NuCana's shares are currently sold short. Learn More on NuCana's current short interest. What is a good short interest percentage for NuCana? 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. 108.35% of NuCana's floating shares are currently sold short. Is NuCana's short interest increasing or decreasing? NuCana saw a decline in short interest in the month of June. As of June 30th, there was short interest totaling 4,530,000 shares, a decline of 1.7% from the previous total of 4,610,000 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 NuCana's short interest compare to its competitors? 108.35% of NuCana's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to NuCana: Evofem Biosciences, Inc. (0.03%), Avenue Therapeutics, Inc. (2.48%), Petros Pharmaceuticals, Inc. (3.74%), Trevena, Inc. (0.38%), Hepion Pharmaceuticals, Inc. (0.57%), Panbela Therapeutics, Inc. (0.00%), Syros Pharmaceuticals, Inc. (0.51%), Sorrento Therapeutics, Inc. (0.67%), Viracta Therapeutics, Inc. (0.02%), Biophytis S.A. (0.47%), 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 NuCana stock? Short selling NCNA is an investing strategy that aims to generate trading profit from NuCana 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 NuCana? A short squeeze for NuCana 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 NCNA, which in turn drives the price of the stock up even further. How often is NuCana'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 NCNA, twice per month. The most recent reporting period available is June, 30 2025. More Short Interest Resources from MarketBeat Related Companies Evofem Biosciences Short Squeeze Avenue Therapeutics Short Squeeze Petros Pharmaceuticals Short Squeeze Trevena Short Squeeze Hepion Pharmaceuticals Short Squeeze Panbela Therapeutics Short Squeeze Syros Pharmaceuticals Short Squeeze Sorrento Therapeutics Short Squeeze Viracta Therapeutics Short Squeeze Biophytis Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:NCNA) was last updated on 7/16/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredThe Trump Dump is starting; Get out of stocks now?The first 365 days of the Trump presidency… Will be the best time to get rich in American history.Paradigm Press | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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