Ero Copper (ERO) Short Interest Ratio & Short Volume $16.96 +0.17 (+1.01%) Closing price 03:59 PM EasternExtended Trading$17.32 +0.36 (+2.12%) As of 04:39 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Ero Copper Short Interest DataEro Copper (ERO) has a short interest of 4.33 million shares, representing 4.58% of the float (the number of shares available for trading by the public). This marks a -4.42% decrease in short interest from the previous month. The short interest ratio (days to cover) is 6.1, indicating that it would take 6.1 days of the average trading volume of 586,276 shares to cover all short positions.Current Short Interest4,330,000 sharesPrevious Short Interest4,530,000 sharesChange Vs. Previous Month-4.42%Dollar Volume Sold Short$62.20 millionShort Interest Ratio6.1 Days to CoverLast Record DateAugust 31, 2025Outstanding Shares103,610,000 sharesFloat Size94,480,000 sharesShort Percent of Float4.58%Today's Trading Volume613,668 sharesAverage Trading Volume586,276 sharesToday's Volume Vs. Average105% Short Selling Ero Copper? Sign up to receive the latest short interest report for Ero Copper and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartERO Short Interest Over TimeERO Days to Cover Over TimeERO Percentage of Float Shorted Over Time Ero Copper Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/31/20254,330,000 shares $62.20 million -4.4%4.6%6.1 $14.37 8/15/20254,530,000 shares $62.83 million -7.2%4.8%7.1 $13.87 7/31/20254,880,000 shares $66.01 million +5.4%5.2%7.6 $13.53 7/15/20254,630,000 shares $67.07 million +12.9%4.9%7.8 $14.49 6/30/20254,100,000 shares $69.33 million +1.7%4.3%7.3 $16.91 6/15/20254,030,000 shares $60.47 million -1.7%4.3%8.2 $15.01 5/31/20254,100,000 shares $57.97 million +2.0%4.3%8.1 $14.14 5/15/20254,020,000 shares $54.83 million -16.3%4.3%7.9 $13.64 4/30/20254,800,000 shares $59.95 million +20.3%5.1%8.7 $12.49 4/15/20253,990,000 shares $41.88 million -9.5%4.2%7.5 $10.50 Get the Latest News and Ratings for ERO and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Ero Copper and its competitors with MarketBeat's FREE daily newsletter. 3/31/20254,410,000 shares $53.47 million -9.1%4.7%8.5 $12.13 3/15/20254,850,000 shares $61.18 million -9.2%5.1%10 $12.62 2/28/20255,340,000 shares $63.07 million +7.0%5.7%11.4 $11.81 2/15/20254,990,000 shares $72.18 million +2.5%5.3%11.2 $14.47 1/31/20254,870,000 shares $65.12 million +33.8%5.2%11.1 $13.37 1/15/20253,640,000 shares $51.58 million +17.0%3.9%9 $14.17 12/31/20243,110,000 shares $41.92 million +21.5%3.3%8.2 $13.48 12/15/20242,560,000 shares $35.05 million +6.7%2.7%7 $13.69 11/30/20242,400,000 shares $36.53 million +4.4%2.5%7 $15.22 11/15/20242,300,000 shares $35.16 million -30.9%2.4%7 $15.29 10/31/20243,330,000 shares $61.12 million +34.8%3.5%11 $18.36 10/15/20242,470,000 shares $48.96 million -8.9%2.6%8.5 $19.82 9/30/20242,710,000 shares $60.35 million -4.9%2.9%9.1 $22.27 9/15/20242,850,000 shares $60.33 million -5.3%3.0%9.9 $21.17 8/31/20243,010,000 shares $61.86 million +0.3%3.2%10.4 $20.55 8/15/20243,000,000 shares $59.82 million +44.9%3.2%9.6 $19.94 7/31/20242,070,000 shares $40.47 million +1.0%2.2%5.9 $19.55 7/15/20242,050,000 shares $45.14 million +3.5%2.2%5.5 $22.02 6/30/20241,980,000 shares $42.33 million -4.4%2.1%5.2 $21.38 6/15/20242,070,000 shares $42.04 million +26.2%2.2%5.1 $20.31 5/31/20241,640,000 shares $34.93 million +1.9%1.8%3.9 $21.30 5/15/20241,610,000 shares $35.31 million -0.6%1.8%4 $21.93 4/30/20241,620,000 shares $33.00 million -20.6%1.8%4.3 $20.37 4/15/20242,040,000 shares $42.11 million +17.9%2.2%5.8 $20.64 3/31/20241,730,000 shares $33.35 million +10.2%1.9%5.3 $19.28 3/15/20241,570,000 shares $29.92 million -6.6%1.7%5.3 $19.06 2/29/20241,680,000 shares $28.66 million +4.4%1.9%5.8 $17.06 2/15/20241,610,000 shares $24.34 million +28.8%2.0%5.5 $15.12 1/31/20241,250,000 shares $19.59 million -21.9%1.5%3.7 $15.67 1/15/20241,600,000 shares $24.86 million -11.6%2.0%4.8 $15.54 12/31/20231,810,000 shares $28.58 million +9.0%2.2%5.7 $15.79 12/15/20231,660,000 shares $26.91 million +21.2%2.0%5.4 $16.21 11/30/20231,370,000 shares $16.89 million +30.5%1.7%4.8 $12.33 11/15/20231,050,000 shares $12.54 million -53.1%1.3%4.1 $11.94 10/31/20232,240,000 shares $30.40 million +2.8%2.7%10.8 $13.57 10/15/20232,180,000 shares $31.83 million -3.5%2.7%12.7 $14.60 9/30/20232,260,000 shares $38.96 million -7.0%2.8%14.6 $17.24 9/15/20232,430,000 shares $45.73 million +12.0%3.0%16.4 $18.82 8/31/20232,170,000 shares $44.88 million +10.2%2.7%15.6 $20.68 8/15/20231,970,000 shares $39.40 million +3.7%2.4%14.9 $20.00 7/31/20231,900,000 shares $45.66 million +74.3%2.3%14.7 $24.03 7/15/20231,090,000 shares $23.70 million -14.2%1.4%9.3 $21.74 6/30/20231,270,000 shares $25.69 million -0.8%1.6%10.9 $20.23 6/15/20231,280,000 shares $26.82 million +11.3%1.6%10.9 $20.95 5/31/20231,150,000 shares $19.02 million +13.9%1.4%9.6 $16.54 5/15/20231,010,000 shares $18.58 million +10.5%1.3%8.4 $18.40 4/30/2023914,000 shares $18.00 million -7.5%1.2%8.2 $19.69 4/15/2023987,800 shares $19.09 million -15.6%1.2%9 $19.33 3/31/20231,170,000 shares $20.64 million -7.9%1.5%11.1 $17.64 3/15/20231,270,000 shares $19.56 million +37.1%1.6%13.8 $15.40 2/28/2023926,600 shares $14.50 million +1.7%1.2%11.7 $15.65 2/15/2023911,400 shares $14.26 million -3.4%1.2%13.2 $15.65 1/31/2023943,500 shares $15.46 million -38.7%1.2%13.3 $16.39 1/15/20231,540,000 shares $23.98 million -8.9%2.0%21.5 $15.57 12/30/20221,690,000 shares $23.24 million -0.6%2.2%25.8 $13.75 12/15/20221,700,000 shares $22.93 million +1.8%2.2%24.5 $13.49 11/30/20221,670,000 shares $21.11 million -5.1%2.2%24.2 $12.64 11/15/20221,760,000 shares $21.56 million -6.4%2.3%25 $12.25 10/31/20221,880,000 shares $21.39 million -0.5%2.5%26.7 $11.38 10/15/20221,890,000 shares $23.28 million +9.3%2.5%23.7 $12.32 9/30/20221,730,000 shares $19.03 million +39.5%2.3%20.4 $11.00 9/15/20221,240,000 shares $12.98 million +4.2%1.6%13.7 $10.47 8/31/20221,190,000 shares $11.27 million +11.2%1.6%12.6 $9.47 8/15/20221,070,000 shares $10.61 million +9.2%1.4%10.9 $9.92 7/31/2022980,100 shares $9.70 million +16.8%1.3%9.6 $9.90 7/15/2022839,200 shares $7.10 million -6.7%1.1%8.9 $8.46 6/30/2022899,500 shares $7.58 million +9.6%1.2%9.9 $8.43 6/15/2022821,000 shares $8.05 million +3.4%1.1%9.9 $9.81 5/31/2022794,200 shares $9.83 million +20.1%1.0%9.9 $12.38 5/15/2022661,500 shares $7.01 million +12.4%0.9%8.6 $10.60 4/30/2022588,300 shares $8.48 million +72.6%0.8%8.1 $14.41 4/15/2022340,900 shares $5.46 million +139.1%0.5%4.7 $16.01 3/31/2022142,600 shares $2.09 million -37.8%0.2%1.9 $14.64 ERO Short Interest - Frequently Asked Questions What is Ero Copper's current short interest? Short interest is the volume of Ero Copper shares that have been sold short but have not yet been covered or closed out. As of August 31st, traders have sold 4,330,000 shares of ERO short. 4.58% of Ero Copper's shares are currently sold short. Learn More on Ero Copper's current short interest. What is a good short interest ratio for Ero Copper? 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. ERO shares currently have a short interest ratio of 6.0. Learn More on Ero Copper's short interest ratio. Which institutional investors are shorting Ero Copper? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Ero Copper: Group One Trading LLC, Jane Street Group LLC, Walleye Capital LLC, Walleye Trading LLC, and 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 Ero Copper? 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. 4.58% of Ero Copper's floating shares are currently sold short. Is Ero Copper's short interest increasing or decreasing? Ero Copper saw a drop in short interest in August. As of August 31st, there was short interest totaling 4,330,000 shares, a drop of 4.4% from the previous total of 4,530,000 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 Ero Copper's float size? Ero Copper currently has issued a total of 103,610,000 shares. Some of Ero Copper'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. Ero Copper currently has a public float of 94,480,000 shares. How does Ero Copper's short interest compare to its competitors? 4.58% of Ero Copper's shares are currently sold short. Here is how the short interest of companies compare to Ero Copper: Freeport-McMoRan Inc. (1.62%), HudBay Minerals Inc (2.50%), Southern Copper Corporation (11.16%), Teck Resources Ltd (3.06%), Taseko Mines Limited (2.25%), New Gold Inc. (2.20%), Knife River Corporation (5.70%), NexGen Energy (17.99%), Centrus Energy Corp. (20.97%), Titan America SA (12.75%), 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 ($73.23 billion), Invesco QQQ ($29.52 billion), iShares Russell 2000 ETF ($20.82 billion), iShares 20+ Year Treasury Bond ETF ($10.76 billion), Palo Alto Networks, Inc. ($9.37 billion), Strategy Inc ($7.58 billion), Invesco S&P 500 Equal Weight ETF ($6.78 billion), SPDR S&P Biotech ETF ($6.72 billion), AppLovin Corporation ($6.37 billion), and iShares iBoxx $ Investment Grade Corporate Bond ETF ($6.29 billion). View all of the most shorted stocks. What does it mean to sell short Ero Copper stock? Short selling ERO is an investing strategy that aims to generate trading profit from Ero Copper as its price is falling. ERO shares are trading up $0.17 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 Ero Copper? A short squeeze for Ero Copper 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 ERO, which in turn drives the price of the stock up even further. How often is Ero Copper'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 ERO, twice per month. The most recent reporting period available is August, 31 2025. 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