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Cytokinetics (CYTK) Short Interest Ratio & Short Volume

Cytokinetics logo
$73.77 +0.15 (+0.20%)
Closing price 04:00 PM Eastern
Extended Trading
$73.76 -0.01 (-0.01%)
As of 06:02 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 Massive. Learn more.
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Cytokinetics Short Interest Overview

As of August 31, 2026, Cytokinetics (CYTK) had a short interest of 17.44 million shares sold short, representing 14.39% of the public float. This marks a 6.85% increase in short interest since the prior report. The short interest ratio (days to cover) is 9.7, meaning it would take 9.7 days of the average trading volume of 2.12 million shares to cover all short positions.

Current Short Interest
17,442,378 shares
Previous Short Interest
16,323,712 shares
Change Vs. Previous Month
6.85%
Dollar Volume Sold Short
$1.24 billion
Short Interest Ratio
9.7 Days to Cover
Last Record Date
August 31, 2026
Outstanding Shares
124,430,000 shares
Short Percent of Float
14.39%
Today's Trading Volume
1,721,502 shares
Average Trading Volume
2,122,713 shares
Today's Volume Vs. Average
81%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

CYTK Short Interest Over Time

CYTK Days to Cover Over Time

CYTK Percentage of Float Shorted Over Time

Cytokinetics 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
8/31/202617,442,378 shares $1.24 billion +6.9%14.4%9.73 $70.91
8/14/202616,323,712 shares $1.21 billion +6.7%13.5%7.69 $74.13
7/31/202615,303,504 shares $1.18 billion -10.3%12.6%9.63 $77.13
7/15/202617,051,981 shares $1.41 billion -3.0%14.1%8.99 $82.62
6/30/202617,573,660 shares $1.49 billion +19.0%14.5%5.27 $85.04
6/15/202614,766,477 shares $1.05 billion -4.7%12.2%9.3 $71.38
5/29/202615,500,865 shares $1.19 billion -5.8%12.8%8.55 $76.76
5/15/202616,461,785 shares $1.25 billion +3.6%13.6%3.38 $75.85
4/30/202615,896,196 shares $1.02 billion +6.8%13.1%9.68 $63.97
4/15/202614,885,295 shares $973.05 million -6.1%12.3%8.99 $65.37
3/31/202615,848,869 shares $1.04 billion +1.2%13.1%7.33 $65.91
3/13/202615,662,163 shares $940.67 million +1.9%12.9%7.94 $60.06
2/27/202615,367,539 shares $956.17 million +4.0%12.7%8.97 $62.22
2/13/202614,783,466 shares $979.55 million +11.1%12.2%8.57 $66.26
1/30/202613,308,302 shares $840.95 million -0.6%11.0%8.66 $63.19
1/15/202613,391,148 shares $849.53 million -3.2%11.0%6.65 $63.44
12/31/202513,837,421 shares $879.23 million +3.7%11.4%5.88 $63.54
12/15/202513,341,806 shares $829.33 million +3.0%11.0%7.7 $62.16
11/28/202512,948,508 shares $882.89 million -10.0%10.7%7.45 $68.19
11/14/202514,382,900 shares $955.60 million +4.3%12.4%7.39 $66.44
10/31/202513,786,011 shares $876.65 million -2.9%11.8%8.1 $63.59
10/15/202514,200,000 shares $891.76 million +0.6%12.1%6.5 $62.80
9/30/202514,110,000 shares $775.49 million -1.1%12.1%6.6 $54.96
9/15/202514,260,000 shares $705.01 million +3.1%12.2%7 $49.44
8/31/202513,830,000 shares $488.61 million -9.8%11.8%7.6 $35.33
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
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
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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
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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

CYTK Short Interest - Frequently Asked Questions

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 31st, investors have sold 17,442,378 shares of CYTK short. 14.39% of Cytokinetics' shares are currently sold short. Learn More on Cytokinetics' 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. CYTK shares currently have a short interest ratio of 9.7. Learn More on Cytokinetics'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. 14.39% of Cytokinetics' floating shares are currently sold short.

Cytokinetics saw a increase in short interest in the month of August. As of August 31st, there was short interest totaling 17,442,378 shares, an increase of 6.9% from the previous total of 16,323,712 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.

14.39% of Cytokinetics' shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to Cytokinetics: Alnylam Pharmaceuticals, Inc. (4.78%), Biogen Inc. (3.89%), Insmed, Inc. (5.35%), BioNTech SE Sponsored ADR (1.13%), Incyte Corporation (5.51%), Roivant Sciences Ltd. (5.09%), Genmab A/S Sponsored ADR (1.11%), United Therapeutics Corporation (5.25%), Ascendis Pharma A/S (11.23%), BridgeBio Pharma, Inc. (13.03%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($62.68 billion), Invesco QQQ ($47.06 billion), iShares Russell 2000 ETF ($23.54 billion), SPDR S&P Biotech ETF ($12.10 billion), Nebius Group N.V. ($9.34 billion), Western Digital Corporation ($8.96 billion), Financial Select Sector SPDR Fund ($8.16 billion), iShares 20+ Year Treasury Bond ETF ($7.98 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($7.52 billion), and VanEck Semiconductor ETF ($7.39 billion). View all of the most shorted stocks.

Short selling CYTK is an investing strategy that aims to generate trading profit from Cytokinetics as its price is falling. CYTK shares are trading up $0.15 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 Cytokinetics 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 CYTK, 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 CYTK, twice per month. The most recent reporting period available is August, 31 2026.

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

  • 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:CYTK is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/10/2026. FINRA publishes updated short interest twice a month.
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