NuCana (NCNA) Short Interest Ratio & Short Volume $3.36 -0.04 (-1.18%) Closing price 08/26/2025 04:00 PM EasternExtended Trading$3.40 +0.04 (+1.22%) As of 07:21 AM 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 61,000 shares, representing 290.48% of the float (the number of shares available for trading by the public). This marks a -99.79% 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 667,236 shares to cover all short positions.Current Short Interest61,000 sharesPrevious Short Interest29,120,000 sharesChange Vs. Previous Month-99.79%Dollar Volume Sold Short$523.38 thousandShort Interest Ratio0.0 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares30,000 sharesShort Percent of Float290.48%Today's Trading Volume176,763 sharesAverage Trading Volume667,236 sharesToday's Volume Vs. Average26% Short Selling NuCana? Sign up to receive the latest short interest report for NuCana and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. 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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 7/31/202561,000 shares $523.38 thousand -99.8%290.5%0 $8.58 7/15/202529,120,000 shares $1.46 million +542.8%N/A0.1 $0.05 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 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. 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 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 $0.35BREAKING: The House just passed 3 pro-crypto bills! (Ad)THREE pro-crypto bills just passed the House! Now, experts believe altcoin season is officially here. Discover the under-the-radar project I believe will skyrocket as a result. 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 $0.41 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 $2.87BREAKING: The House just passed 3 pro-crypto bills! (Ad)THREE pro-crypto bills just passed the House! Now, experts believe altcoin season is officially here. Discover the under-the-radar project I believe will skyrocket as a result. 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 $2.67 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 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 closed out or covered. As of July 31st, traders have sold 61,000 shares of NCNA short. 290.48% 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. 290.48% of NuCana's floating shares are currently sold short. Is NuCana's short interest increasing or decreasing? NuCana saw a drop in short interest in July. As of July 31st, there was short interest totaling 61,000 shares, a drop of 99.8% from the previous total of 29,120,000 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? 290.48% 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: Viracta Therapeutics, Inc. (0.04%), Trevena, Inc. (0.61%), Bon Natural Life Limited (66.10%), Vincerx Pharma, Inc. (0.05%), Navidea Biopharmaceuticals, Inc. (0.00%), Syros Pharmaceuticals, Inc. (0.31%), Smart for Life, Inc. (0.01%), Virpax Pharmaceuticals, Inc. (0.25%), Scopus BioPharma Inc. (0.03%), Evelo Biosciences, Inc. (0.04%), 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 NuCana stock? Short selling NCNA is an investing strategy that aims to generate trading profit from NuCana as its price is falling. NCNA shares are trading down $0.04 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 NuCana? A short squeeze for NuCana occurs when it has a large amount of short interest and its stock increases 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 July, 31 2025. More Short Interest Resources from MarketBeat Related Companies Viracta Therapeutics Short Squeeze Trevena Short Squeeze Bon Natural Life Short Squeeze Vincerx Pharma Short Squeeze Navidea Biopharmaceuticals Short Squeeze Syros Pharmaceuticals Short Squeeze Smart for Life Short Squeeze Virpax Pharmaceuticals Short Squeeze Scopus BioPharma Short Squeeze Evelo Biosciences 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 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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