Cytokinetics (CYTK) Short Interest Ratio & Short Volume $49.75 -0.24 (-0.48%) Closing price 04:00 PM EasternExtended Trading$49.52 -0.23 (-0.45%) As of 07:59 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 Cytokinetics Short Interest DataCytokinetics (CYTK) has a short interest of 15.33 million shares, representing 13.10% of the float (the number of shares available for trading by the public). This marks a -1.22% decrease in short interest from the previous month. The short interest ratio (days to cover) is 10.7, indicating that it would take 10.7 days of the average trading volume of 2.42 million shares to cover all short positions.Current Short Interest15,330,000 sharesPrevious Short Interest15,520,000 sharesChange Vs. Previous Month-1.22%Dollar Volume Sold Short$592.81 millionShort Interest Ratio10.7 Days to CoverLast Record DateAugust 15, 2025Outstanding Shares119,660,000 sharesFloat Size117,000,000 sharesShort Percent of Float13.10%Today's Trading Volume3,292,304 sharesAverage Trading Volume2,424,947 sharesToday's Volume Vs. Average136% Short Selling Cytokinetics? Sign up to receive the latest short interest report for Cytokinetics 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 ChartCYTK Short Interest Over TimeCYTK Days to Cover Over TimeCYTK Percentage of Float Shorted Over Time Cytokinetics Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/15/202515,330,000 shares $592.81 million -1.2%13.1%10.7 $38.67 7/31/202515,520,000 shares $584.17 million -2.6%13.3%10.3 $37.64 7/15/202515,930,000 shares $605.50 million +6.1%13.6%9.3 $38.01 6/30/202515,020,000 shares $496.26 million +7.2%12.9%7.9 $33.04 6/15/202514,010,000 shares $481.66 million -3.4%12.0%6.8 $34.38 5/31/202514,500,000 shares $447.76 million -7.1%12.4%7 $30.88 5/15/202515,600,000 shares $465.50 million +7.7%13.4%7.4 $29.84 4/30/202514,480,000 shares $620.32 million +3.8%12.5%6.6 $42.84 4/15/202513,950,000 shares $537.91 million -2.7%12.0%7.2 $38.56 3/31/202514,330,000 shares $575.92 million +0.8%12.4%7.9 $40.19 Get the Latest News and Ratings for CYTK and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Cytokinetics and its competitors with MarketBeat's FREE daily newsletter. 3/15/202514,220,000 shares $630.80 million +1.1%12.3%9 $44.36 2/28/202514,070,000 shares $647.22 million -6.6%12.2%9.6 $46.00 2/15/202515,070,000 shares $695.63 million +10.4%13.1%10.6 $46.16 1/31/202513,650,000 shares $675.13 million -2.7%12.0%10.1 $49.46 1/15/202514,030,000 shares $657.59 million +2.3%12.4%11.6 $46.87 12/31/202413,710,000 shares $644.92 million -0.2%12.1%11.8 $47.04 12/15/202413,730,000 shares $667.96 million -2.1%12.1%11.7 $48.65 11/30/202414,030,000 shares $727.60 million -3.8%12.4%11.8 $51.86 11/15/202414,590,000 shares $732.71 million -7.0%12.8%11.8 $50.22 10/31/202415,690,000 shares $800.19 million +1.0%13.8%13.3 $51.00 10/15/202415,540,000 shares $860.61 million -10.3%13.7%12.8 $55.38 9/30/202417,320,000 shares $914.50 million -2.9%15.2%13.9 $52.80 9/15/202417,840,000 shares $996.90 million -2.0%15.7%12.9 $55.88 8/31/202418,210,000 shares $1.04 billion -2.3%16.0%12.8 $57.08 8/15/202418,630,000 shares $1.06 billion +4.5%16.4%9.4 $57.06 7/31/202417,830,000 shares $1.05 billion +2.1%15.7%8.7 $59.01 7/15/202417,460,000 shares $1.00 billion +0.5%15.8%8.8 $57.39 6/30/202417,380,000 shares $941.65 million +8.4%15.7%8.8 $54.18 6/15/202416,040,000 shares $865.04 million -2.3%14.5%8.3 $53.93 5/31/202416,420,000 shares $796.53 million +15.7%14.9%7.2 $48.51 5/15/202414,190,000 shares $858.50 million +3.8%14.1%6.5 $60.50 4/30/202413,670,000 shares $838.24 million -2.6%13.5%7.2 $61.32 4/15/202414,040,000 shares $954.72 million +6.1%13.9%6.9 $68.00 3/31/202413,230,000 shares $927.56 million -10.6%13.3%4.2 $70.11 3/15/202414,800,000 shares $964.81 million +1.9%14.9%3.7 $65.19 2/29/202414,530,000 shares $1.05 billion +5.1%14.6%3.9 $72.24 2/15/202413,830,000 shares $1.09 billion +1.8%14.6%3.9 $78.56 1/31/202413,580,000 shares $1.06 billion -1.2%14.5%3.9 $78.13 1/15/202413,750,000 shares $1.18 billion -8.8%14.7%3.9 $85.60 12/31/202315,080,000 shares $1.26 billion +2.9%16.1%5.1 $83.49 12/15/202314,660,000 shares $528.79 million +9.0%15.7%6.7 $36.07 11/30/202313,450,000 shares $450.31 million -1.8%14.4%8.9 $33.48 11/15/202313,690,000 shares $449.44 million -3.1%14.6%10.1 $32.83 10/31/202314,130,000 shares $492.57 million +2.8%15.4%11.6 $34.86 10/15/202313,750,000 shares $470.39 million +5.3%15.0%13 $34.21 9/30/202313,060,000 shares $384.75 million +4.1%14.2%14.2 $29.46 9/15/202312,550,000 shares $429.59 million +8.1%13.7%15.7 $34.23 8/31/202311,610,000 shares $405.65 million +15.1%13.0%14.2 $34.94 8/15/202310,090,000 shares $330.04 million No Change11.3%12.4 $32.71 7/31/202310,090,000 shares $336.50 million -0.1%11.2%12.1 $33.35 7/15/202310,100,000 shares $352.79 million +1.5%11.3%11.8 $34.93 6/30/20239,950,000 shares $324.57 million +7.9%11.1%11.3 $32.62 6/15/20239,220,000 shares $326.76 million -2.5%10.3%10.2 $35.44 5/31/20239,460,000 shares $356.55 million +0.2%10.5%10.4 $37.69 5/15/20239,440,000 shares $367.69 million No Change10.5%9.4 $38.95 10/31/202211,340,000 shares $495.10 million -8.8%N/A9.9 $43.66 10/15/202212,440,000 shares $571.62 million +2.7%N/A10 $45.95 9/30/202212,110,000 shares $586.73 million +3.8%N/A9.5 $48.45 9/15/202211,670,000 shares $636.13 million -2.9%N/A7.7 $54.51 8/31/202212,020,000 shares $636.58 million -5.7%N/A8.1 $52.96 8/15/202212,740,000 shares $647.57 million +8.7%N/A9.2 $50.83 7/31/202211,720,000 shares $496.11 million -0.8%N/A8.6 $42.33 7/15/202211,810,000 shares $478.31 million +37.8%N/A9.4 $40.50 6/30/20228,570,000 shares $336.72 million +0.5%16.6%7.3 $39.29 6/15/20228,530,000 shares $350.67 million -2.0%16.5%10 $41.11 5/31/20228,700,000 shares $347.13 million -2.6%N/A10.1 $39.90 5/15/20228,930,000 shares $375.15 million +11.5%N/A9.6 $42.01 4/30/20228,010,000 shares $319.36 million +1.0%N/A7.9 $39.87 4/15/20227,930,000 shares $313.71 million +5.7%N/A7.9 $39.56 3/31/20227,500,000 shares $276.08 million +3.7%N/A6.9 $36.81 3/15/20227,230,000 shares $245.39 million -13.1%N/A6.7 $33.94 2/28/20228,320,000 shares $293.86 million +1.2%N/A7.7 $35.32 2/15/20228,220,000 shares $308.91 million +4.2%N/A7.5 $37.58 1/31/20227,890,000 shares $261.87 million -1.5%N/A7.7 $33.19 1/15/20228,010,000 shares $264.33 million +0.8%N/A0 $33.00 12/31/20217,950,000 shares $362.36 million -9.1%N/A8.8 $45.58 12/15/20218,750,000 shares $337.84 million +1.0%N/A10.1 $38.61 11/30/20218,660,000 shares $340.68 million -5.8%N/A10.1 $39.34 11/15/20219,190,000 shares $360.25 million -9.8%N/A10.6 $39.20 10/29/202110,190,000 shares $355.73 million +5.2%N/A12.3 $34.91 10/15/20219,690,000 shares $357.46 million -7.7%N/A11.3 $36.89 9/30/202110,500,000 shares $375.27 million -1.8%N/A5.5 $35.74 9/15/202110,690,000 shares $360.25 million -5.4%N/A5.7 $33.70 8/31/202111,300,000 shares $372.56 million -1.0%N/A6.2 $32.97 8/13/202111,410,000 shares $366.83 million -4.3%N/A6.5 $32.15 7/30/202111,920,000 shares $353.79 million +32.4%N/A6.6 $29.68 7/15/20219,000,000 shares $173.88 million +10.2%N/A5.2 $19.32 6/30/20218,170,000 shares $161.68 million -5.4%12.2%10.8 $19.79 6/15/20218,640,000 shares $192.50 million -4.9%12.9%11.8 $22.28 5/28/20219,080,000 shares $198.22 million -9.6%13.6%11.2 $21.83 5/14/202110,040,000 shares $253.31 million +6.9%N/A10.6 $25.23 4/30/20219,390,000 shares $247.80 million +2.6%N/A10.2 $26.39 4/15/20219,150,000 shares $221.98 million +1.9%N/A0 $24.26 3/31/20218,980,000 shares $200.52 million -7.7%N/A9.6 $22.33 3/15/20219,730,000 shares $222.04 million +5.5%N/A10.1 $22.82 2/26/20219,220,000 shares $183.02 million +0.2%N/A9.2 $19.85 2/12/20219,200,000 shares $209.39 million -3.7%N/A9.8 $22.76 1/29/20219,550,000 shares $191 million -3.5%N/A9.3 $20.00 1/15/20219,900,000 shares $196.02 million +6.3%N/A9.6 $19.80 12/31/20209,310,000 shares $189.55 million +12.7%N/A7.4 $20.36 12/15/20208,260,000 shares $175.44 million -7.8%N/A4.8 $21.24 11/30/20208,960,000 shares $153.66 million +1.8%N/A5.4 $17.15 11/15/20208,800,000 shares $145.38 million -6.4%N/A5.5 $16.52 10/30/20209,400,000 shares $145.61 million +3.3%N/A6.1 $15.49 10/15/20209,100,000 shares $150.06 million +3.6%N/A6 $16.49 9/30/20208,780,000 shares $190.09 million +22.3%N/A5.7 $21.65 9/15/20207,180,000 shares $166.72 million -3.8%N/A7.6 $23.22 CYTK Short Interest - Frequently Asked Questions What is Cytokinetics' current short interest? Short interest is the volume of Cytokinetics shares that have been sold short but have not yet been covered or closed out. As of August 15th, investors have sold 15,330,000 shares of CYTK short. 13.10% of Cytokinetics' shares are currently sold short. Learn More on Cytokinetics' current short interest. What is a good short interest ratio for Cytokinetics? 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. CYTK shares currently have a short interest ratio of 11.0. Learn More on Cytokinetics's short interest ratio. Which institutional investors are shorting Cytokinetics? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Cytokinetics: Nomura Holdings Inc., Group One Trading LLC, Jane Street Group LLC, Caption Management LLC, Walleye Capital LLC, Walleye Trading LLC, and Wolverine Asset Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Cytokinetics? 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. 13.10% of Cytokinetics' floating shares are currently sold short. Is Cytokinetics' short interest increasing or decreasing? Cytokinetics saw a drop in short interest in August. As of August 15th, there was short interest totaling 15,330,000 shares, a drop of 1.2% from the previous total of 15,520,000 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 Cytokinetics' float size? Cytokinetics currently has issued a total of 119,660,000 shares. Some of Cytokinetics' 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. Cytokinetics currently has a public float of 117,000,000 shares. How does Cytokinetics' short interest compare to its competitors? 13.10% of Cytokinetics' shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Cytokinetics: Genmab A/S Sponsored ADR (0.55%), Viatris Inc. (3.26%), Ascendis Pharma A/S (4.07%), Dr. Reddy's Laboratories Ltd (1.13%), Qiagen N.V. (2.85%), BridgeBio Pharma, Inc. (10.72%), Moderna, Inc. (18.29%), Elanco Animal Health Incorporated (4.89%), Verona Pharma PLC American Depositary Share (2.40%), Roivant Sciences Ltd. (8.85%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks. What does it mean to sell short Cytokinetics stock? Short selling CYTK is an investing strategy that aims to generate trading profit from Cytokinetics as its price is falling. CYTK shares are trading down $0.24 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 Cytokinetics? A short squeeze for Cytokinetics 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 CYTK, which in turn drives the price of the stock up even further. How often is Cytokinetics' 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 CYTK, twice per month. The most recent reporting period available is August, 15 2025. More Short Interest Resources from MarketBeat Related Companies GMAB Short Interest Data VTRS Short Interest Data ASND Short Interest Data RDY Short Interest Data QGEN Short Interest Data BBIO Short Interest Data MRNA Short Interest Data ELAN Short Interest Data VRNA Short Interest Data ROIV Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:CYTK) was last updated on 9/4/2025 by MarketBeat.com Staff From Our PartnersCapital Gains Tax Strategies for SeniorsCapital gains taxes can take a bite out of your retirement income—unless you have a smart strategy. 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