Fuel Tech (FTEK) Short Interest Ratio & Short Volume $2.60 -0.11 (-4.06%) Closing price 07/11/2025 04:00 PM EasternExtended Trading$2.58 -0.02 (-0.58%) As of 07/11/2025 07:53 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 ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Fuel Tech Short Interest DataFuel Tech (FTEK) has a short interest of 544,800 shares, representing 2.30% of the float (the number of shares available for trading by the public). This marks a 658.77% increase in short interest from the previous month. The short interest ratio (days to cover) is 1.6, indicating that it would take 1.6 days of the average trading volume of 168,007 shares to cover all short positions.Current Short Interest544,800 sharesPrevious Short Interest71,800 sharesChange Vs. Previous Month+658.77%Dollar Volume Sold Short$1.37 millionShort Interest Ratio1.6 Days to CoverLast Record DateJune 30, 2025Outstanding Shares30,780,000 sharesFloat Size23,670,000 sharesShort Percent of Float2.30%Today's Trading Volume320,146 sharesAverage Trading Volume168,007 sharesToday's Volume Vs. Average191% Short Selling Fuel Tech? Sign up to receive the latest short interest report for Fuel Tech and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartFTEK Short Interest Over TimeFTEK Days to Cover Over TimeFTEK Percentage of Float Shorted Over Time Fuel Tech Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/30/2025544,800 shares $1.37 million +658.8%2.3%1.6 $2.52 6/15/202571,800 shares $131.39 thousand -19.7%0.3%0.3 $1.83 5/31/202589,400 shares $150.19 thousand -19.5%0.4%0.5 $1.68 5/15/2025111,000 shares $119.33 thousand +18.1%0.5%0.7 $1.08 4/30/202594,000 shares $90.33 thousand +6.7%0.4%1.3 $0.96 4/15/202588,100 shares $86.11 thousand +10.3%0.4%1.1 $0.98 3/31/202579,900 shares $83.90 thousand +20.3%0.3%0.8 $1.05 3/15/202566,400 shares $65.07 thousand -10.0%0.3%0.6 $0.98 2/28/202573,800 shares $73.06 thousand -11.7%0.3%0.6 $0.99 2/15/202583,600 shares $77.33 thousand -16.3%0.4%0.6 $0.93 Get the Latest News and Ratings for FTEK and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Fuel Tech and its competitors with MarketBeat's FREE daily newsletter. 1/31/202599,900 shares $98.40 thousand -23.5%0.4%0.7 $0.99 1/15/2025130,500 shares $129.47 thousand -8.1%0.6%0.9 $0.99 12/31/2024142,000 shares $149.10 thousand +127.9%0.6%1.2 $1.05 12/15/202462,300 shares $63.55 thousand -4.0%0.3%0.6 $1.02 11/30/202464,900 shares $69.44 thousand -33.4%0.3%0.6 $1.07 11/15/202497,500 shares $100.43 thousand -43.0%0.4%0.9 $1.03 10/31/2024170,900 shares $176.03 thousand -11.3%0.7%2.2 $1.03 10/15/2024192,600 shares $194.53 thousand -4.6%0.8%2.3 $1.01 9/30/2024201,800 shares $211.89 thousand -22.6%0.9%2.5 $1.05 9/15/2024260,600 shares $260.60 thousand -17.8%1.1%3.4 $1.00 8/31/2024317,100 shares $317.10 thousand +3.2%1.3%4.2 $1.00 8/15/2024307,400 shares $304.51 thousand +1.7%1.3%4.4 $0.99 7/31/2024302,400 shares $311.50 thousand -1.5%1.3%4.6 $1.03 7/15/2024307,000 shares $325.42 thousand +12.5%1.3%5.2 $1.06 6/30/2024273,000 shares $292.11 thousand +0.3%1.2%4.6 $1.07 6/15/2024272,300 shares $284.55 thousand -1.1%1.2%4.4 $1.05 5/31/2024275,400 shares $308.45 thousand -10.8%1.2%3.6 $1.12 5/15/2024308,900 shares $376.86 thousand -17.1%1.3%3.9 $1.22 4/30/2024372,400 shares $472.95 thousand -2.5%1.6%4.9 $1.27 4/15/2024381,800 shares $435.25 thousand -8.0%1.6%5.1 $1.14 3/31/2024415,100 shares $502.27 thousand -1.5%1.8%5.6 $1.21 3/15/2024421,300 shares $484.50 thousand +21.1%1.8%5.6 $1.15 2/29/2024348,000 shares $379.32 thousand -11.1%1.5%6.2 $1.09 2/15/2024391,300 shares $444.13 thousand -19.7%1.7%7.3 $1.14 1/31/2024487,500 shares $521.63 thousand +10.6%2.1%8.9 $1.07 1/15/2024440,900 shares $454.13 thousand -3.3%1.9%9.1 $1.03 12/31/2023455,800 shares $478.59 thousand -8.2%1.9%9.3 $1.05 12/15/2023496,500 shares $521.33 thousand +11.4%2.1%9 $1.05 11/30/2023445,800 shares $472.55 thousand -9.1%1.9%8.1 $1.06 11/15/2023490,200 shares $524.51 thousand +9.1%2.1%9.1 $1.07The Trump Dump is starting; Get out of stocks now? (Ad)The first 365 days of the Trump presidency… Will be the best time to get rich in American history.If I’m right about this (like I was before) a modest $900 investment could grow to a life-changing a 10/31/2023449,300 shares $458.24 thousand No Change1.9%7.2 $1.02 10/15/2023449,300 shares $498.72 thousand -1.1%1.9%7.2 $1.11 9/30/2023454,400 shares $536.19 thousand -11.2%1.9%7.3 $1.18 9/15/2023511,400 shares $598.34 thousand +2.7%2.2%9.2 $1.17 8/31/2023498,200 shares $543.04 thousand -1.3%2.1%8.7 $1.09 8/15/2023504,600 shares $575.24 thousand -0.4%2.1%8 $1.14 7/31/2023506,600 shares $643.38 thousand +0.6%2.2%7.8 $1.27 7/15/2023503,400 shares $639.32 thousand +8.7%2.1%2.1 $1.27 6/30/2023463,300 shares $613.87 thousand -7.7%2.0%2 $1.33 6/15/2023501,800 shares $687.47 thousand +3.7%2.1%2.1 $1.37 5/31/2023484,000 shares $658.24 thousand -10.7%2.1%2.1 $1.36 5/15/2023542,200 shares $699.44 thousand -13.1%2.3%2.3 $1.29 4/30/2023624,000 shares $780 thousand +16.7%2.7%2.7 $1.25 4/15/2023534,500 shares $656.85 thousand +0.2%2.3%2.9 $1.23 3/31/2023533,600 shares $683.01 thousand +10.3%2.3%9.1 $1.28 3/15/2023483,600 shares $589.99 thousand -10.2%2.1%6.2 $1.22 2/28/2023538,500 shares $721.59 thousand -0.6%2.3%6 $1.34 2/15/2023541,600 shares $769.07 thousand -7.0%2.0%6.5 $1.42 1/31/2023582,100 shares $919.72 thousand -0.1%2.1%6.7 $1.58 1/15/2023582,600 shares $990.42 thousand -2.2%2.1%6.9 $1.70 12/30/2022595,400 shares $759.14 thousand +3.6%2.2%7.8 $1.28 12/15/2022574,600 shares $861.90 thousand +0.7%2.1%9.3 $1.50 11/30/2022570,500 shares $707.42 thousand -1.0%2.1%9.7 $1.24 11/15/2022576,200 shares $760.58 thousand -3.2%2.1%11.1 $1.32 10/31/2022595,100 shares $696.27 thousand -5.4%2.2%9.7 $1.17 10/15/2022629,100 shares $729.76 thousand -7.7%2.3%8.5 $1.16 9/30/2022681,700 shares $797.59 thousand +5.7%2.5%9 $1.17 9/15/2022645,100 shares $896.69 thousand -7.8%2.8%7 $1.39 8/31/2022699,600 shares $986.44 thousand +27.6%3.0%7.4 $1.41 8/15/2022548,400 shares $762.28 thousand -13.1%2.4%5.8 $1.39 7/31/2022630,900 shares $820.17 thousand -11.1%2.7%6.8 $1.30 7/15/2022709,900 shares $858.98 thousand -6.5%3.1%8 $1.21 6/30/2022759,000 shares $941.16 thousand +9.6%3.3%7.8 $1.24 6/15/2022692,500 shares $886.40 thousand -19.1%3.0%6.4 $1.28 5/31/2022856,200 shares $1.10 million -13.0%3.7%6.3 $1.29 5/15/2022984,400 shares $1.19 million +1.7%4.2%6.1 $1.21 4/30/2022968,000 shares $1.25 million -8.7%4.2%5.8 $1.29 4/15/20221,060,000 shares $1.54 million -17.8%4.6%5.8 $1.45 3/31/20221,290,000 shares $1.87 million +22.9%N/A6.5 $1.45 3/15/20221,050,000 shares $1.42 million -7.1%4.5%4.3 $1.35 2/28/20221,130,000 shares $1.41 million +24.8%4.9%4.3 $1.25 2/15/2022905,600 shares $1.15 million +6.4%3.9%3.1 $1.27 1/31/2022851,000 shares $1.01 million -26.0%3.7%1.9 $1.19 1/15/20221,150,000 shares $1.54 million -3.4%N/A2 $1.34 12/31/20211,190,000 shares $1.67 million -17.9%5.1%0.9 $1.40 12/15/20211,450,000 shares $2.13 million +38.1%6.2%1 $1.47 11/30/20211,050,000 shares $1.72 million -45.0%4.5%0.7 $1.64 11/15/20211,910,000 shares $4.09 million +3.8%8.2%1.3 $2.14 10/29/20211,840,000 shares $3.79 million +134.2%7.9%1.4 $2.06 10/15/2021785,700 shares $1.35 million -15.1%3.4%0.6 $1.72The Trump Dump is starting; Get out of stocks now? (Ad)The first 365 days of the Trump presidency… Will be the best time to get rich in American history.If I’m right about this (like I was before) a modest $900 investment could grow to a life-changing a 9/30/2021925,500 shares $1.61 million -11.0%4.0%1.9 $1.74 9/15/20211,040,000 shares $1.86 million +4.0%4.5%2.2 $1.79 8/31/20211,000,000 shares $1.87 million -20.0%4.3%1.9 $1.87 8/13/20211,250,000 shares $2.29 million -2.3%5.4%1.5 $1.83 7/30/20211,280,000 shares $2.48 million -3.8%5.5%0.8 $1.94 7/15/20211,330,000 shares $2.62 million -3.6%5.7%0.9 $1.97 6/30/20211,380,000 shares $3.24 million +32.7%5.9%0.9 $2.35 6/15/20211,040,000 shares $2.44 million +205.3%4.5%0.7 $2.35 5/28/2021340,600 shares $711.85 thousand -30.6%1.5%0.2 $2.09 5/14/2021491,000 shares $1.09 million -0.1%2.1%0.4 $2.21 4/30/2021491,400 shares $1.14 million -40.4%2.1%0.7 $2.31 4/15/2021823,800 shares $2.05 million -60.6%3.6%0.9 $2.49 3/31/20212,090,000 shares $6.33 million -4.6%9.1%1.7 $3.03 3/15/20212,190,000 shares $8.28 million -4.4%9.5%1.5 $3.78 2/26/20212,290,000 shares $8.40 million +177.7%10.6%1.4 $3.67 2/12/2021824,700 shares $4.21 million -1.4%4.7%0.2 $5.10 1/29/2021836,700 shares $4.33 million +12.0%4.8%0.1 $5.18 1/15/2021747,200 shares $4.33 million +12.3%4.2%0.1 $5.80 12/31/2020665,100 shares $2.81 million -22.8%3.8%0.1 $4.23 12/15/2020861,200 shares $3.07 million -69.1%5.0%0.1 $3.57 11/30/20202,790,000 shares $14.31 million +34.8%16.2%0.4 $5.13 11/15/20202,070,000 shares $2.13 million +3,650.0%12.1%0.4 $1.03 10/30/202055,200 shares $38.75 thousand -4.5%0.3%0.5 $0.70 10/15/202057,800 shares $49.13 thousand -59.4%0.3%0.5 $0.85 9/30/2020142,300 shares $119.75 thousand +74.4%0.8%1 $0.84 9/15/202081,600 shares $55.49 thousand -24.9%0.5%0.1 $0.68 8/31/2020108,700 shares $86.26 thousand +127.9%0.6%0.2 $0.79 8/14/202047,700 shares $40.79 thousand -25.5%0.3%0.1 $0.86 7/31/202064,000 shares $56.32 thousand -41.9%0.4%0.1 $0.88 7/15/2020110,200 shares $106.78 thousand +104.1%0.7%0.1 $0.97 FTEK Short Interest - Frequently Asked Questions What is Fuel Tech's current short interest? Short interest is the volume of Fuel Tech shares that have been sold short but have not yet been closed out or covered. As of June 30th, investors have sold 544,800 shares of FTEK short. 2.30% of Fuel Tech's shares are currently sold short. Learn More on Fuel Tech's current short interest. What is a good short interest ratio for Fuel Tech? 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. FTEK shares currently have a short interest ratio of 2.0. Learn More on Fuel Tech's short interest ratio. What is a good short interest percentage for Fuel Tech? 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. 2.30% of Fuel Tech's floating shares are currently sold short. Is Fuel Tech's short interest increasing or decreasing? Fuel Tech saw a increase in short interest during the month of June. As of June 30th, there was short interest totaling 544,800 shares, an increase of 658.8% from the previous total of 71,800 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 Fuel Tech's float size? Fuel Tech currently has issued a total of 30,780,000 shares. Some of Fuel Tech's 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. Fuel Tech currently has a public float of 23,670,000 shares. How does Fuel Tech's short interest compare to its competitors? 2.30% of Fuel Tech's shares are currently sold short. Here is how the short interest of companies in the industry of "machinery" compare to Fuel Tech: A2Z Cust2Mate Solutions Corp. (1.70%), Palladyne AI Corp. (20.34%), AirJoule Technologies Corporation (4.86%), Richtech Robotics Inc. (27.71%), Gencor Industries, Inc. (0.63%), Perma-Pipe International Holdings, Inc. (0.82%), Desktop Metal, Inc. (15.49%), Taylor Devices, Inc. (3.26%), Drilling Tools International Corp. (2.05%), Planet Image International Limited (0.14%), 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 Fuel Tech stock? Short selling FTEK is an investing strategy that aims to generate trading profit from Fuel Tech as its price is falling. FTEK shares are trading down $0.11 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 Fuel Tech? A short squeeze for Fuel Tech 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 FTEK, which in turn drives the price of the stock up even further. How often is Fuel Tech'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 FTEK, twice per month. The most recent reporting period available is June, 30 2025. More Short Interest Resources from MarketBeat Related Companies AZ Short Interest PDYN Short Interest AIRJ Short Interest RR Short Interest GENC Short Interest PPIH Short Interest DM Short Interest TAYD Short Interest DTI Short Interest YIBO Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:FTEK) was last updated on 7/13/2025 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 | SponsoredMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredThis Signal Only Flashes Once Every 4 Years – And It Just TriggeredThis same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...Crypto Swap Profits | SponsoredPresidential Bombshell: $150T Resource to Be Released as soon as this Summer?Something extraordinary is happening in Washington. 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