Perma-Fix Environmental Services (PESI) Short Interest Ratio & Short Volume $11.04 +0.06 (+0.55%) As of 01:04 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Perma-Fix Environmental Services Short Interest DataPerma-Fix Environmental Services (PESI) has a short interest of 1.10 million shares, representing 6.54% of the float (the number of shares available for trading by the public). This marks a -6.78% decrease in short interest from the previous month. The short interest ratio (days to cover) is 6.8, indicating that it would take 6.8 days of the average trading volume of 138,820 shares to cover all short positions.Current Short Interest1,100,000 sharesPrevious Short Interest1,180,000 sharesChange Vs. Previous Month-6.78%Dollar Volume Sold Short$10.98 millionShort Interest Ratio6.8 Days to CoverLast Record DateJune 15, 2025Outstanding Shares18,450,000 sharesShort Percent of Float6.54%Today's Trading Volume60,972 sharesAverage Trading Volume138,820 sharesToday's Volume Vs. Average44% Short Selling Perma-Fix Environmental Services? Sign up to receive the latest short interest report for Perma-Fix Environmental Services and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPESI Short Interest Over TimePESI Days to Cover Over TimePESI Percentage of Float Shorted Over Time Perma-Fix Environmental Services Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/15/20251,100,000 shares $10.98 million -6.8%6.5%6.8 $9.98 5/31/20251,180,000 shares $12.54 million +5.4%8.2%6.3 $10.63 5/15/20251,120,000 shares $10.72 million +6.7%7.8%6.1 $9.57 4/30/20251,050,000 shares $8.61 million -3.7%N/A5.9 $8.20 4/15/20251,090,000 shares $7.82 million +2.8%7.6%6.6 $7.17 3/31/20251,060,000 shares $7.71 million +3.9%7.4%7 $7.27 3/15/20251,020,000 shares $7.44 million -7.3%7.1%7.1 $7.29 2/28/20251,100,000 shares $8.84 million +12.8%7.7%8.8 $8.04 2/15/2025975,500 shares $8.83 million 0.0%6.8%7 $9.05 1/31/2025975,700 shares $9.98 million -8.8%N/A7 $10.23 Get the Latest News and Ratings for PESI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Perma-Fix Environmental Services and its competitors with MarketBeat's FREE daily newsletter. 1/15/20251,070,000 shares $11.57 million +12.6%N/A7.5 $10.81 12/31/2024950,700 shares $10.52 million -11.2%N/A6.7 $11.07 12/15/20241,070,000 shares $12.53 million +1.9%N/A7.8 $11.71 11/30/20241,050,000 shares $14.99 million +1.0%N/A8.7 $14.28 11/15/20241,040,000 shares $13.62 million -2.8%N/A9.4 $13.10 10/31/20241,070,000 shares $14.36 million -10.8%N/A11.3 $13.42 10/15/20241,200,000 shares $16.62 million +1.7%N/A11.9 $13.85 9/30/20241,180,000 shares $14.48 million +9.3%N/A11.2 $12.27 9/15/20241,080,000 shares $12.15 million -6.9%N/A7.2 $11.25 8/31/20241,160,000 shares $12.76 million -1.7%N/A7.6 $11.00 8/15/20241,180,000 shares $13.44 million +21.2%N/A7.4 $11.39 7/31/2024973,500 shares $12.35 million +15.8%N/A6.3 $12.69 7/15/2024841,000 shares $8.45 million +87.0%N/A5.5 $10.05 6/30/2024449,700 shares $4.56 million +51.5%N/A3.2 $10.13 6/15/2024296,900 shares $2.87 million +14.8%N/A2.9 $9.68 5/31/2024258,600 shares $2.70 million +25.3%N/A2.8 $10.44 5/15/2024206,400 shares $2.67 million +109.1%1.9%2.4 $12.92 4/30/202498,700 shares $1.13 million +8.0%0.9%1.4 $11.45 4/15/202491,400 shares $1.03 million -48.2%0.9%1.9 $11.23 3/31/2024176,400 shares $2.10 million +16.4%1.7%4.1 $11.89 3/15/2024151,600 shares $1.40 million -9.1%1.4%4.2 $9.25 2/29/2024166,700 shares $1.32 million +8.4%1.6%5.3 $7.93 2/15/2024153,800 shares $1.33 million -7.6%1.5%3.9 $8.68 1/31/2024166,500 shares $1.32 million -7.6%1.6%3.9 $7.90 1/15/2024180,100 shares $1.58 million -1.5%1.7%3.6 $8.80 12/31/2023182,800 shares $1.44 million -0.1%1.7%3.6 $7.86 12/15/2023182,900 shares $1.53 million -17.7%1.7%3.3 $8.36 11/30/2023222,300 shares $1.62 million -7.6%2.1%3.8 $7.29 11/15/2023240,700 shares $1.91 million +4.5%2.3%4.9 $7.93 10/31/2023230,400 shares $2.14 million +4.3%2.2%4.4 $9.30Elon’s BIGGEST warning yet? (Ad)Tesla's About to Prove Everyone Wrong... Again Back in 2018, when Jeff Brown told everyone to buy Tesla… The "experts" said Elon was finished and Tesla was headed for bankruptcy. Now they're saying the same thing, but Jeff has uncovered Tesla's next breakthrough. Click here to see why Tesla's about to prove everyone wrong... again. 10/15/2023220,900 shares $2.16 million -11.9%2.1%3.9 $9.80 9/30/2023250,800 shares $2.62 million +15.5%2.4%4.3 $10.45 9/15/2023217,200 shares $2.47 million -4.1%2.1%4 $11.38 8/31/2023226,400 shares $2.83 million -12.6%2.2%4.1 $12.48 8/15/2023258,900 shares $3.17 million -8.5%2.5%4.4 $12.26 7/31/2023282,800 shares $2.77 million -9.9%2.7%4.4 $9.79 7/15/2023314,000 shares $3.06 million -6.1%3.0%5.1 $9.75 6/30/2023334,300 shares $3.67 million -4.9%3.2%3.8 $10.98 6/15/2023351,400 shares $3.98 million -13.2%3.4%3.1 $11.33 5/31/2023404,900 shares $4.37 million -8.3%3.9%3.2 $10.80 5/15/2023441,500 shares $5.00 million +6.1%4.2%3.4 $11.33 4/30/2023416,200 shares $3.78 million +31.1%4.0%3.1 $9.08 4/15/2023317,600 shares $2.62 million +7.4%3.1%2.4 $8.25 3/31/2023295,600 shares $3.48 million +233.6%2.9%2.8 $11.78 3/15/202388,600 shares $752.21 thousand +116.1%0.9%1.1 $8.49 2/28/202341,000 shares $286.18 thousand -9.5%0.4%0.7 $6.98 2/15/202345,300 shares $291.28 thousand +135.9%0.4%0.9 $6.43 1/31/202319,200 shares $79.68 thousand -15.0%0.2%0.5 $4.15 1/15/202322,600 shares $89.27 thousand +82.3%0.2%0.8 $3.95 12/30/202212,400 shares $43.77 thousand +65.3%0.1%0.4 $3.53 12/15/20227,500 shares $24.94 thousand -21.1%0.1%0.3 $3.33 11/30/20229,500 shares $35.48 thousand +30.1%0.1%0.4 $3.74 11/15/20227,300 shares $30.51 thousand -26.3%0.1%0.4 $4.18 10/31/20229,900 shares $41.18 thousand -9.2%0.1%0.5 $4.16 10/15/202210,900 shares $40.66 thousand -48.6%0.1%0.6 $3.73 9/30/202221,200 shares $94.98 thousand +53.6%0.2%1.4 $4.48 9/15/202213,800 shares $64.58 thousand +7.0%0.1%1.1 $4.68 8/31/202212,900 shares $66.05 thousand -23.2%0.1%1.2 $5.12 8/15/202216,800 shares $88.29 thousand +90.9%0.2%1.8 $5.26 7/31/20228,800 shares $46.38 thousand -29.0%0.1%0.8 $5.27 7/15/202212,400 shares $68.20 thousand +6.9%0.1%1.2 $5.50 6/30/202211,600 shares $60.20 thousand -41.7%0.1%1 $5.19 6/15/202219,900 shares $102.49 thousand +5.3%0.2%1.7 $5.15 5/31/202218,900 shares $104.48 thousand +107.7%0.2%1.4 $5.53 5/15/20229,100 shares $50.96 thousand -58.5%0.1%0.6 $5.60 4/30/202221,900 shares $124.61 thousand +170.4%0.2%1.6 $5.69 4/15/20228,100 shares $44.55 thousand -3.6%0.1%0.6 $5.50 3/31/20228,400 shares $46.45 thousand -44.7%0.1%0.7 $5.53 3/15/202215,200 shares $86.18 thousand -9.5%N/A1.1 $5.67 2/28/202216,800 shares $95.09 thousand -18.8%N/A1.2 $5.66 2/15/202220,700 shares $115.09 thousand -29.4%N/A1.2 $5.56 1/31/202229,300 shares $172.58 thousand +49.5%N/A1.4 $5.89 1/15/202219,600 shares $125.83 thousand +13.3%N/A0.9 $6.42 12/31/202117,300 shares $109.51 thousand +170.3%N/A0.7 $6.33 12/15/20216,400 shares $44.16 thousand -5.9%N/A0.2 $6.90 11/30/20216,800 shares $47.94 thousand -4.2%N/A0.2 $7.05 11/15/20217,100 shares $47.78 thousand -62.4%N/A0.2 $6.73 10/29/202118,900 shares $136.08 thousand -20.3%0.2%0.7 $7.20 10/15/202123,700 shares $163.77 thousand +100.9%0.2%1 $6.91 9/30/202111,800 shares $78.47 thousand -9.2%0.1%0.4 $6.65Elon’s BIGGEST warning yet? (Ad)Tesla's About to Prove Everyone Wrong... Again Back in 2018, when Jeff Brown told everyone to buy Tesla… The "experts" said Elon was finished and Tesla was headed for bankruptcy. Now they're saying the same thing, but Jeff has uncovered Tesla's next breakthrough. Click here to see why Tesla's about to prove everyone wrong... again. 9/15/202113,000 shares $83.07 thousand +319.4%0.1%0.5 $6.39 8/31/20213,100 shares $17.89 thousand -40.4%0.0%0.1 $5.77 8/13/20215,200 shares $30.26 thousand +44.4%0.1%0.3 $5.82 7/30/20213,600 shares $20.63 thousand -89.0%0.0%0.2 $5.73 7/15/202132,800 shares $204.18 thousand +837.1%0.3%1.3 $6.23 6/30/20213,500 shares $25.03 thousand -70.1%0.0%0.1 $7.15 6/15/202111,700 shares $81.08 thousand -57.0%0.1%0.4 $6.93 5/28/202127,200 shares $197.20 thousand +91.6%0.3%0.9 $7.25 5/14/202114,200 shares $102.81 thousand -65.0%0.1%0.5 $7.24 4/30/202140,600 shares $305.31 thousand +140.2%0.4%1.2 $7.52 4/15/202116,900 shares $124.72 thousand -46.0%0.2%0.5 $7.38 3/31/202131,300 shares $229.43 thousand +233.0%0.3%1 $7.33 3/15/20219,400 shares $65.14 thousand -55.0%0.1%0.3 $6.93 2/26/202120,900 shares $143.90 thousand +294.3%0.2%0.8 $6.89 2/12/20215,300 shares $33.50 thousand -47.0%0.1%0.2 $6.32 1/29/202110,000 shares $62.70 thousand -48.2%0.1%0.4 $6.27 1/15/202119,300 shares $123.91 thousand +35.0%0.2%0.7 $6.42 12/31/202014,300 shares $85.09 thousand -3.4%0.1%0.6 $5.95 12/15/202014,800 shares $91.91 thousand +19.4%0.1%0.7 $6.21 11/30/202012,400 shares $78.62 thousand -3.1%0.1%0.7 $6.34 11/15/202012,800 shares $86.53 thousand -36.6%0.1%0.8 $6.76 10/30/202020,200 shares $139.99 thousand -9.8%0.2%1.2 $6.93 10/15/202022,400 shares $153.33 thousand +47.4%0.2%1.3 $6.85 9/30/202015,200 shares $107.16 thousand -33.9%0.1%0.8 $7.05 9/15/202023,000 shares $162.38 thousand -8.7%0.2%1 $7.06 8/31/202025,200 shares $180.18 thousand +61.5%0.2%0.8 $7.15 8/14/202015,600 shares $109.36 thousand -28.1%0.2%0.5 $7.01 7/31/202021,700 shares $152.55 thousand +24.7%0.2%0.7 $7.03 7/15/202017,400 shares $106.49 thousand -7.5%0.2%0.6 $6.12 PESI Short Interest - Frequently Asked Questions What is Perma-Fix Environmental Services' current short interest? Short interest is the volume of Perma-Fix Environmental Services shares that have been sold short but have not yet been closed out or covered. As of June 15th, investors have sold 1,100,000 shares of PESI short. 6.54% of Perma-Fix Environmental Services' shares are currently sold short. Learn More on Perma-Fix Environmental Services' current short interest. What is a good short interest ratio for Perma-Fix Environmental Services? 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. PESI shares currently have a short interest ratio of 7.0. Learn More on Perma-Fix Environmental Services's short interest ratio. Which institutional investors are shorting Perma-Fix Environmental Services? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Perma-Fix Environmental Services: Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Perma-Fix Environmental Services? 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. 6.54% of Perma-Fix Environmental Services' floating shares are currently sold short. Is Perma-Fix Environmental Services' short interest increasing or decreasing? Perma-Fix Environmental Services saw a drop in short interest in June. As of June 15th, there was short interest totaling 1,100,000 shares, a drop of 6.8% from the previous total of 1,180,000 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 Perma-Fix Environmental Services' short interest compare to its competitors? 6.54% of Perma-Fix Environmental Services' shares are currently sold short. Here is how the short interest of companies in the industry of "business services" compare to Perma-Fix Environmental Services: Paysafe Limited (6.02%), Montrose Environmental Group, Inc. (9.40%), MediaAlpha, Inc. (6.73%), Enviri Corporation (7.90%), MultiPlan Co. (6.92%), Uxin Limited Sponsored ADR (0.08%), Nutex Health Inc. (10.26%), Priority Technology Holdings, Inc. (8.31%), Accolade, Inc. (2.71%), The RMR Group Inc. (3.29%), 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 ($69.26 billion), Invesco QQQ ($25.22 billion), iShares Russell 2000 ETF ($20.33 billion), iShares 20+ Year Treasury Bond ETF ($9.99 billion), MicroStrategy Incorporated ($9.12 billion), Canadian Natural Resources Limited ($6.73 billion), SPDR S&P Biotech ETF ($6.52 billion), Invesco S&P 500 Equal Weight ETF ($5.60 billion), Financial Select Sector SPDR Fund ($4.64 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.59 billion). View all of the most shorted stocks. What does it mean to sell short Perma-Fix Environmental Services stock? Short selling PESI is an investing strategy that aims to generate trading profit from Perma-Fix Environmental Services as its price is falling. PESI shares are trading up $0.06 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 Perma-Fix Environmental Services? A short squeeze for Perma-Fix Environmental Services 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 PESI, which in turn drives the price of the stock up even further. How often is Perma-Fix Environmental Services' 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 PESI, twice per month. The most recent reporting period available is June, 15 2025. More Short Interest Resources from MarketBeat Related Companies PSFE Short Squeeze MEG Short Squeeze MAX Short Squeeze NVRI Short Squeeze MPLN Short Squeeze UXIN Short Squeeze NUTX Short Squeeze PRTH Short Squeeze ACCD Short Squeeze RMR 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:PESI) was last updated on 7/3/2025 by MarketBeat.com Staff From Our PartnersTrump’s New Order Could Boost Social Security Benefits by 400%If you collect—or plan to collect—Social Security, you need to see this. A new initiative tied to President...InvestorPlace | SponsoredHow to Collect Up To $5,917/mo From Trump’s Made In USA BoomHow to Collect Up To $5,917/mo From Trump's Made In USA Boom Thanks to President Trump's America-First poli...Investors Alley | SponsoredEveryone’s watching Nvidia right now. Here’s why I’m excited.So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal...Timothy Sykes | SponsoredElon’s NEXT Big IPO?Cancel your internet TODAY!? Take your latest internet bill and light it on fire… then count the seconds it...Banyan Hill Publishing | SponsoredPresidential Bombshell: $150T Resource to Be Released as soon as this Summer?Something extraordinary is happening in Washington. For the first time in over a century, a sitting Preside...Paradigm Press | SponsoredBuffett’s $325 Billion Cash Problem — Solved by Gold?A bombshell announcement is just weeks away — and it could send shockwaves through the gold market. Most inves...Golden Portfolio | SponsoredThe $7 company helping Nvidia build the world’s first trillion-dollar robot …Michael Robinson has been at the forefront of the technology market for over 40 years. Spotting some profit...Weiss Ratings | SponsoredA grave, grave error.President Donald Trump made headlines last month with a staggering claim. He stated that since taking offic...Porter & Company | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Perma-Fix Environmental Services, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Perma-Fix Environmental Services With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
