Live Earnings Conference Call: ClearSign Technologies will host a live Q1 2025 earnings call on May 21, 2025 at 5:00PM ET. Follow this link to get details and listen to ClearSign Technologies' Q1 2025 earnings call when it goes live. Get details. ClearSign Technologies (CLIR) Short Interest Ratio & Short Volume $0.70 -0.01 (-1.35%) As of 02:37 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock ClearSign Technologies Short Interest DataClearSign Technologies (CLIR) has a short interest of 216,600 shares. This marks a -3.30% decrease in short interest from the previous month. The short interest ratio (days to cover) is 2.6, indicating that it would take 2.6 days of the average trading volume of 98,634 shares to cover all short positions.Current Short Interest216,600 sharesPrevious Short Interest224,000 sharesChange Vs. Previous Month-3.30%Dollar Volume Sold Short$128,357.16Short Interest Ratio2.6 Days to CoverLast Record DateApril 30, 2025Outstanding Shares52,419,000 sharesPercentage of Shares Shorted0.41%Today's Trading Volume51,386 sharesAverage Trading Volume98,634 sharesToday's Volume Vs. Average52% Short Selling ClearSign Technologies? Sign up to receive the latest short interest report for ClearSign Technologies and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartCLIR Short Interest Over TimeCLIR Days to Cover Over TimeCLIR Percentage of Float Shorted Over Time ClearSign Technologies Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/2025216,600 shares $128,357.16 -3.3%N/A2.6 $0.59 4/15/2025224,000 shares $132,182.40 -2.7%0.5%2.5 $0.59 3/31/2025230,300 shares $172,725.00 +5.4%0.6%2.1 $0.75 3/15/2025218,600 shares $176,016.72 -4.2%0.5%1.8 $0.81 2/28/2025228,100 shares $173,082.28 -15.2%0.5%1.7 $0.76 2/15/2025269,100 shares $269,100.00 +9.5%0.6%1.8 $1.00 1/31/2025245,800 shares $299,876.00 +2.9%N/A1.5 $1.22 1/15/2025239,000 shares $260,510.00 -28.5%N/A1.4 $1.09 12/31/2024334,300 shares $481,392.00 -1.6%N/A2.1 $1.44 12/15/2024339,700 shares $394,052.00 +44.3%N/A2.8 $1.16 Get the Latest News and Ratings for CLIR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for ClearSign Technologies and its competitors with MarketBeat's FREE daily newsletter. 11/30/2024235,500 shares $277,890.00 -5.1%N/A1.9 $1.18 11/15/2024248,100 shares $213,341.19 -7.5%N/A2.3 $0.86 10/31/2024268,200 shares $231,322.50 -3.2%N/A4.1 $0.86 10/15/2024277,100 shares $229,965.29 -17.7%N/A6 $0.83 9/30/2024336,500 shares $285,991.35 +27.2%N/A7.1 $0.85 9/15/2024264,600 shares $197,365.14 -4.9%N/A3.6 $0.75 8/31/2024278,200 shares $208,622.18 -8.5%N/A3.7 $0.75 8/15/2024304,000 shares $221,768.00 +4.9%N/A3.8 $0.73 7/31/2024289,700 shares $249,142.00 -7.0%N/A3.5 $0.86 7/15/2024311,500 shares $258,576.15 -19.0%N/A3.3 $0.83 6/30/2024384,500 shares $320,788.35 +20.8%N/A4.3 $0.83 6/15/2024318,400 shares $229,248.00 +25.3%N/A5 $0.72 5/31/2024254,200 shares $210,960.58 -1.8%N/A4.2 $0.83 5/15/2024258,900 shares $212,298.00 -20.7%N/A4 $0.82 4/30/2024326,300 shares $257,809.63 +5.0%N/A4.9 $0.79 4/15/2024310,700 shares $277,921.15 -5.6%N/A5.2 $0.89 3/31/2024329,100 shares $317,581.50 +0.9%N/A5.5 $0.97 3/15/2024326,300 shares $319,741.37 -6.1%N/A4.7 $0.98 2/29/2024347,300 shares $444,544.00 +0.9%N/A4.2 $1.28 2/15/2024344,200 shares $347,642.00 -12.1%N/A3.2 $1.01 1/31/2024391,600 shares $387,684.00 +2.9%N/A3.6 $0.99 1/15/2024380,600 shares $433,884.00 +10.3%1.2%3.7 $1.14 12/31/2023345,000 shares $382,950.00 -2.2%1.1%3.4 $1.11 12/15/2023352,900 shares $419,951.00 -5.4%1.2%4 $1.19 11/30/2023373,200 shares $462,768.00 +6.7%1.2%4.5 $1.24 11/15/2023349,700 shares $292,873.75 -12.8%1.1%5.7 $0.84 10/31/2023401,200 shares $326,978.00 -3.3%1.3%8.2 $0.82 10/15/2023414,900 shares $435,645.00 -7.4%1.4%8.3 $1.05 9/30/2023448,100 shares $488,429.00 +10.1%1.5%8.9 $1.09 9/15/2023407,000 shares $373,992.30 -7.8%1.3%7.8 $0.92The 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 8/31/2023441,300 shares $507,495.00 +5.6%1.4%9 $1.15 8/15/2023417,900 shares $409,291.26 +4.9%1.4%7.2 $0.98 7/31/2023398,300 shares $521,773.00 -8.6%1.3%6.3 $1.31 7/15/2023435,600 shares $592,416.00 +6.0%1.4%7.1 $1.36 6/30/2023411,100 shares $538,541.00 -2.8%1.3%6.2 $1.31 6/15/2023423,100 shares $520,413.00 -4.8%1.4%6.7 $1.23 5/31/2023444,300 shares $679,779.00 +21.8%1.5%7.6 $1.53 5/15/2023364,800 shares $435,936.00 -2.2%1.2%8.6 $1.20 4/30/2023373,000 shares $395,380.00 +7.5%1.2%11.7 $1.06 4/15/2023346,900 shares $336,180.79 -5.1%1.1%11.4 $0.97 3/31/2023365,400 shares $291,589.20 -0.6%1.2%11.6 $0.80 3/15/2023367,500 shares $279,300.00 +0.1%1.2%10.2 $0.76 2/28/2023367,100 shares $296,212.99 -2.0%1.2%7.3 $0.81 2/15/2023374,700 shares $288,519.00 -1.9%1.2%7 $0.77 1/31/2023381,900 shares $282,644.19 +4.3%1.3%6.7 $0.74 1/15/2023366,200 shares $248,906.14 -11.0%1.2%6.2 $0.68 12/30/2022411,500 shares $220,564.00 +5.6%1.4%6.9 $0.54 12/15/2022389,800 shares $262,686.22 -3.7%1.3%7 $0.67 11/30/2022404,700 shares $277,745.61 +2.4%1.3%8.2 $0.69 11/15/2022395,100 shares $269,655.75 -3.4%1.3%9.3 $0.68 10/31/2022408,900 shares $338,896.32 -6.2%1.4%8.8 $0.83 10/15/2022435,900 shares $342,748.17 +2.0%1.4%8.9 $0.79 9/30/2022427,500 shares $392,445.00 +5.3%1.4%8.2 $0.92 9/15/2022406,100 shares $507,625.00 -3.1%1.4%8.2 $1.25 8/31/2022419,100 shares $414,909.00 +0.4%1.4%8 $0.99 8/15/2022417,300 shares $475,722.00 +0.7%1.5%7.1 $1.14 7/31/2022414,400 shares $414,400.00 +0.4%1.5%7.6 $1.00 7/15/2022412,700 shares $480,011.37 -3.2%1.4%8.4 $1.16 6/30/2022426,500 shares $516,065.00 0.0%2.1%8.8 $1.21 6/15/2022426,600 shares $469,260.00 -5.4%2.1%7.3 $1.10 5/31/2022450,900 shares $554,607.00 -3.0%1.6%7.7 $1.23 5/15/2022464,900 shares $571,827.00 +2.6%1.8%6.7 $1.23 4/30/2022453,100 shares $593,561.00 +4.1%1.8%6.5 $1.31 4/15/2022435,400 shares $622,622.00 -5.3%1.7%5.5 $1.43 3/31/2022459,800 shares $749,474.00 -29.3%1.8%5.6 $1.63 3/15/2022650,400 shares $819,504.00 -8.2%2.6%7.8 $1.26 2/28/2022708,300 shares $899,541.00 +46.5%2.8%7.3 $1.27 2/15/2022483,600 shares $575,484.00 -3.9%1.9%3.7 $1.19 1/31/2022503,400 shares $619,182.00 -8.1%2.0%1.1 $1.23 1/15/2022547,800 shares $723,096.00 -7.9%N/A1.2 $1.32 12/31/2021594,900 shares $820,962.00 +0.6%2.3%1.3 $1.38 12/15/2021591,500 shares $822,185.00 -6.3%2.3%1.2 $1.39 11/30/2021631,200 shares $1.05 million +46.5%2.5%1.3 $1.66 11/15/2021430,800 shares $766,824.00 -6.3%1.7%0.9 $1.78 10/29/2021459,800 shares $744,876.00 -1.8%1.9%3 $1.62 10/15/2021468,400 shares $875,908.00 -11.6%1.9%3.6 $1.87 9/30/2021529,800 shares $1.06 million -19.1%2.1%4.2 $2.00 9/15/2021655,100 shares $1.46 million +36.7%2.6%5.9 $2.23 8/31/2021479,100 shares $1.50 million +0.6%1.9%4.4 $3.14 8/13/2021476,100 shares $1.75 million -4.2%1.9%6.5 $3.67The 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 7/30/2021497,100 shares $2.04 million -3.1%2.0%6.4 $4.10 7/15/2021512,900 shares $2.15 million +0.4%2.1%4.8 $4.20 6/30/2021510,700 shares $2.45 million -0.9%2.1%4 $4.80 6/15/2021515,400 shares $2.63 million -6.2%2.1%3 $5.10 5/28/2021549,600 shares $2.70 million -10.6%2.2%3 $4.92 5/14/2021614,600 shares $2.45 million +17.5%2.5%3 $3.99 4/30/2021522,900 shares $2.50 million +19.3%2.2%2.3 $4.78 4/15/2021438,500 shares $1.93 million -17.2%1.8%1.9 $4.40 3/31/2021529,800 shares $2.97 million -2.9%2.2%2.1 $5.60 3/15/2021545,500 shares $2.74 million -12.6%2.3%2.2 $5.03 2/26/2021624,300 shares $2.96 million +6.0%2.7%2.2 $4.74 2/12/2021589,100 shares $2.40 million -13.1%2.5%2.1 $4.08 1/29/2021678,200 shares $2.73 million -10.9%2.9%2.7 $4.02 1/15/2021761,500 shares $2.98 million +10.8%3.3%3.5 $3.91 12/31/2020687,000 shares $2.03 million -10.2%2.9%3.1 $2.96 12/15/2020765,200 shares $2.00 million -11.2%3.3%3.6 $2.62 11/30/2020861,500 shares $2.26 million -7.5%3.7%5.4 $2.62 11/15/2020931,400 shares $2.18 million -2.3%4.0%6 $2.34 10/30/2020953,300 shares $2.23 million -5.6%4.3%5.7 $2.34 10/15/20201,010,000 shares $2.57 million +3.2%4.5%5 $2.54 9/30/2020979,200 shares $2.21 million +0.3%4.3%4.4 $2.26 9/15/2020975,900 shares $2.45 million -5.3%4.2%3.4 $2.51 8/31/20201,030,000 shares $2.36 million No Change4.5%0.2 $2.29 8/14/20201,030,000 shares $2.42 million -14.2%5.0%0.2 $2.35 7/31/20201,200,000 shares $2.71 million -18.9%5.8%0.2 $2.26 7/15/20201,480,000 shares $3.12 million -16.4%7.2%0.3 $2.11 6/30/20201,770,000 shares $3.56 million +37.2%8.6%0.4 $2.01 6/15/20201,290,000 shares $1.02 million +6.6%6.3%0.3 $0.79 5/29/20201,210,000 shares $659,571.00 -2.4%5.9%7.4 $0.55 CLIR Short Interest - Frequently Asked Questions What is ClearSign Technologies' current short interest? Short interest is the volume of ClearSign Technologies shares that have been sold short but have not yet been closed out or covered. As of April 30th, traders have sold 216,600 shares of CLIR short. Learn More on ClearSign Technologies' current short interest. What is a good short interest ratio for ClearSign Technologies? 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. CLIR shares currently have a short interest ratio of 3.0. Learn More on ClearSign Technologies's short interest ratio. Is ClearSign Technologies' short interest increasing or decreasing? ClearSign Technologies saw a decrease in short interest in the month of April. As of April 30th, there was short interest totaling 216,600 shares, a decrease of 3.3% from the previous total of 224,000 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 ClearSign Technologies' short interest compare to its competitors? Here is how the short interest of companies in the industry of "measuring and control equipment" compare to ClearSign Technologies: Rapid Micro Biosystems, Inc. (6.80%), Seer, Inc. (5.57%), Nautilus Biotechnology, Inc. (1.50%), Kewaunee Scientific Co. (2.17%), Owlet, Inc. (3.82%), Prenetics Global Limited (0.34%), Optex Systems Holdings, Inc (0.24%), Singular Genomics Systems, Inc. (2.91%), Syntec Optics Holdings, Inc. (0.38%), Akoya Biosciences, Inc. (10.28%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Spotify Technology S.A. ($4.67 billion), Charter Communications, Inc. ($4.58 billion), Capital One Financial Co. ($4.47 billion), The Kroger Co. ($2.56 billion), Reddit, Inc. ($2.23 billion), Rivian Automotive, Inc. ($2.16 billion), Live Nation Entertainment, Inc. ($1.90 billion), SoFi Technologies, Inc. ($1.85 billion), Zscaler, Inc. ($1.75 billion), and Omnicom Group Inc. ($1.75 billion). View all of the most shorted stocks. What does it mean to sell short ClearSign Technologies stock? Short selling CLIR is an investing strategy that aims to generate trading profit from ClearSign Technologies as its price is falling. CLIR shares are trading down $0.02 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 ClearSign Technologies? A short squeeze for ClearSign Technologies 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 CLIR, which in turn drives the price of the stock up even further. How often is ClearSign Technologies' 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 CLIR, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies Rapid Micro Biosystems Short Squeeze Seer Short Squeeze Nautilus Biotechnology Short Squeeze Kewaunee Scientific Short Squeeze Owlet Short Squeeze Prenetics Global Short Squeeze Optex Systems Short Squeeze Singular Genomics Systems Short Squeeze Syntec Optics Short Squeeze Akoya 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:CLIR) was last updated on 5/21/2025 by MarketBeat.com Staff From Our PartnersMarket 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 | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. 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