Opthea (OPT) Short Interest Ratio & Short Volume $3.41 0.00 (0.00%) As of 08/29/2025 Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsFDA EventsFinancialsHeadlinesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Opthea Short Interest DataOpthea (OPT) has a short interest of 533,800 shares, representing 0.36% of the float (the number of shares available for trading by the public). This marks a 2.22% increase in short interest from the previous month. The short interest ratio (days to cover) is 18.0, indicating that it would take 18.0 days of the average trading volume of 0 shares to cover all short positions.Current Short Interest533,800 sharesPrevious Short Interest522,200 sharesChange Vs. Previous Month+2.22%Dollar Volume Sold Short$1.82 millionShort Interest Ratio18.0 Days to CoverLast Record DateMarch 31, 2025Outstanding Shares153,910,000 sharesShort Percent of Float0.36%Today's Trading Volume0 sharesAverage Trading Volume0 sharesToday's Volume Vs. AverageNaN Short Selling Opthea? Sign up to receive the latest short interest report for Opthea 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. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartOPT Short Interest Over TimeOPT Days to Cover Over TimeOPT Percentage of Float Shorted Over Time Opthea Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 3/31/2025533,800 shares $1.82 million +2.2%0.4%18 $3.41 3/15/2025522,200 shares $1.66 million +20.7%0.4%16.5 $3.18 2/28/2025432,800 shares $1.94 million +2.3%0.3%14 $4.48 2/15/2025422,900 shares $2.20 million +0.7%0.3%17.1 $5.21 1/31/2025420,100 shares $2.34 million +196.9%N/A14.6 $5.56 1/15/2025141,500 shares $507.99 thousand +113.1%N/A5.2 $3.59 12/31/202466,400 shares $260.95 thousand -2.6%N/A2.8 $3.93 12/15/202468,200 shares $221.65 thousand -5.2%N/A2.4 $3.25 11/30/202471,900 shares $265.31 thousand +9.6%N/A2.4 $3.69 11/15/202465,600 shares $215.17 thousand -10.9%N/A2.2 $3.28 Get the Latest News and Ratings for OPT and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Opthea and its competitors with MarketBeat's FREE daily newsletter. 10/31/202473,600 shares $320.90 thousand +2.7%N/A3 $4.36 10/15/202471,700 shares $352.05 thousand +10.0%N/A3.1 $4.91 9/30/202465,200 shares $265.36 thousand -6.9%N/A3.2 $4.07 9/15/202470,000 shares $220.52 thousand -2.0%N/A4.3 $3.15 8/31/202471,400 shares $220.31 thousand +2.4%N/A4.4 $3.09 8/15/202469,700 shares $167.98 thousand -6.9%N/A3.8 $2.41 7/31/202474,900 shares $170.02 thousand -4.7%N/A3.1 $2.27 7/15/202478,600 shares $164.27 thousand -4.4%N/A3.4 $2.09 6/30/202482,200 shares $158.65 thousand +19.1%N/A3.7 $1.93 6/15/202469,000 shares $134.90 thousand -3.1%N/A3.1 $1.96 5/31/202471,200 shares $202.21 thousand -35.2%N/A3.4 $2.84 5/15/2024109,800 shares $393.08 thousand -13.2%N/A4.9 $3.58 4/30/2024126,500 shares $433.90 thousand +3.2%N/A5.8 $3.43 4/15/2024122,600 shares $436.46 thousand -3.7%N/A5.6 $3.56 3/31/2024127,300 shares $523.20 thousand -5.8%N/A4.9 $4.11 3/15/2024135,100 shares $466.10 thousand +8.9%N/A3.4 $3.45 2/29/2024124,100 shares $434.35 thousand -21.1%N/A3.4 $3.50 2/15/2024157,200 shares $452.74 thousand +26.4%N/A4.4 $2.88 1/31/2024124,400 shares $337.12 thousand +8.2%N/A4 $2.71 1/15/2024115,000 shares $332.35 thousand -23.5%N/A4.4 $2.89 12/31/2023150,300 shares $443.39 thousand +70.4%N/A6.8 $2.95 12/15/202388,200 shares $222.26 thousand -4.2%N/A4.7 $2.52 11/30/202392,100 shares $236.70 thousand +2.6%N/A9.6 $2.57 11/15/202389,800 shares $154.46 thousand -0.8%N/A7.4 $1.72 10/31/202390,500 shares $152.49 thousand -14.0%N/A7.1 $1.69 10/15/2023105,200 shares $190.94 thousand +1.4%N/A8 $1.82 9/30/2023103,800 shares $180.82 thousand -1.2%N/A8 $1.74 9/15/2023105,100 shares $218.61 thousand -7.2%N/A8.1 $2.08 8/31/2023113,200 shares $266.02 thousand +38.7%N/A10.1 $2.35 8/15/202381,600 shares $236.64 thousand +1.9%N/A10.5 $2.90$100 Trillion “AI Metal” Found in American Ghost Town (Ad)Jeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could be the biggest technology story of this decade. In short, he believes what he's holding in his hand is the key to the $100 trillion AI boom… And only one company here in the U.S. can mine this obscure metal.Click here to get the details on this virtual monopoly. 7/31/202380,100 shares $250.71 thousand +0.8%N/A10.3 $3.13 7/15/202379,500 shares $258.38 thousand +4.3%N/A9.9 $3.25 6/30/202376,200 shares $213.36 thousand -8.7%N/A8.9 $2.80 6/15/202383,500 shares $263.03 thousand +8.2%N/A7.9 $3.15 5/31/202377,200 shares $240.09 thousand +0.3%N/A9.4 $3.11 5/15/202377,000 shares $280.28 thousand +6.7%N/A8.9 $3.64 4/30/202372,200 shares $304.32 thousand -2.3%N/A9.8 $4.22 4/15/202373,900 shares $245.35 thousand -6.6%N/A11.4 $3.32 3/31/202379,100 shares $312.45 thousand +3.4%N/A14.9 $3.95 3/15/202376,500 shares $373.32 thousand +3.7%N/A36.4 $4.88 2/28/202373,800 shares $333.95 thousand +0.8%N/A36.9 $4.53 2/15/202373,200 shares $359.41 thousand -1.1%N/A45.8 $4.91 1/31/202374,000 shares $412.18 thousand -2.3%N/A74 $5.57 1/15/202375,700 shares $375.36 thousand -3.6%N/A108.1 $4.96 12/30/202278,500 shares $420.76 thousand +2.2%N/A98.1 $5.36 12/15/202276,800 shares $396.46 thousand -3.4%N/A69.8 $5.16 11/30/202279,500 shares $397.50 thousand -1.1%N/A72.3 $5.00 11/15/202280,400 shares $439.67 thousand -5.4%N/A40.2 $5.47 10/31/202285,000 shares $414.80 thousand -1.4%N/A38.6 $4.88 10/15/202286,200 shares $391.96 thousand -2.2%N/A39.2 $4.55 9/30/202288,100 shares $546.22 thousand +3.2%N/A38.3 $6.20 9/15/202285,400 shares $495.32 thousand +5.7%N/A37.1 $5.80 8/31/202280,800 shares $492.88 thousand -1.1%N/A31.1 $6.10 8/15/202281,700 shares $564.55 thousand -0.7%N/A26.4 $6.91 7/31/202282,300 shares $559.64 thousand -2.5%N/A24.9 $6.80 7/15/202284,400 shares $539.74 thousand +8.2%N/A22.8 $6.40 6/30/202278,000 shares $491.40 thousand +5.8%N/A21.7 $6.30 6/15/202273,700 shares $405.35 thousand -4.8%N/A18.4 $5.50 5/31/202277,400 shares $602.17 thousand +48.3%N/A17.6 $7.78 5/15/202252,200 shares $338.26 thousand -4.4%N/A12.4 $6.48 4/30/202254,600 shares $315.04 thousand +4.2%N/A14.4 $5.77 4/15/202252,400 shares $311.79 thousand -1.0%N/A9.9 $5.95 3/31/202252,900 shares $344.91 thousand +41.8%N/A9.4 $6.52 3/15/202237,300 shares $190.23 thousand -14.7%N/A6.4 $5.10 2/28/202243,700 shares $246.91 thousand -4.0%N/A6.9 $5.65 2/15/202245,500 shares $283.92 thousand -38.4%N/A7 $6.24 1/31/202273,900 shares $485.52 thousand -87.2%N/A9.2 $6.57 1/15/2022576,800 shares $4.35 million +704.5%N/A88.7 $7.55 12/31/202171,700 shares $541.34 thousand -10.8%N/A9.4 $7.55 12/15/202180,400 shares $567.62 thousand -19.1%N/A9.6 $7.06 11/30/202199,400 shares $654.05 thousand -4.3%N/A11.6 $6.58 11/15/2021103,900 shares $748.08 thousand +6.7%N/A10.1 $7.20 10/29/202197,400 shares $735.37 thousand -36.8%N/A7.9 $7.55 10/15/2021154,000 shares $1.19 million +15.1%N/A10.3 $7.72 9/30/2021133,800 shares $1.07 million -5.6%N/A8 $8.00 9/15/2021141,700 shares $1.09 million +4.1%N/A6.8 $7.70 8/31/2021136,100 shares $1.02 million -0.4%N/A1.2 $7.51 8/13/2021136,600 shares $980.79 thousand +11.2%N/A1.2 $7.18 7/30/2021122,800 shares $808.02 thousand -18.8%N/A1.1 $6.58 7/15/2021151,300 shares $1.13 million -0.3%N/A1.4 $7.49$100 Trillion “AI Metal” Found in American Ghost Town (Ad)Jeff Brown recently traveled to a ghost town in the middle of an American desert… To investigate what could be the biggest technology story of this decade. In short, he believes what he's holding in his hand is the key to the $100 trillion AI boom… And only one company here in the U.S. can mine this obscure metal.Click here to get the details on this virtual monopoly. 6/30/2021151,800 shares $1.21 million +95.9%N/A1.4 $7.94 6/15/202177,500 shares $666.50 thousand -8.5%N/A0.8 $8.60 5/28/202184,700 shares $775.01 thousand +20.5%N/A12.6 $9.15 5/14/202170,300 shares $564.51 thousand -0.1%N/A7.9 $8.03 4/30/202170,400 shares $649.79 thousand -0.7%N/A7.3 $9.23 4/15/202170,900 shares $684.19 thousand +10.3%N/A5.7 $9.65 3/31/202164,300 shares $572.27 thousand -15.5%N/A5 $8.90 3/15/202176,100 shares $747.30 thousand +61.2%N/A5.3 $9.82 2/26/202147,200 shares $472.47 thousand +128.0%N/A2.6 $10.01 2/12/202120,700 shares $234.12 thousand -47.5%N/A1.2 $11.31 1/29/202139,400 shares $470.83 thousand +6.2%N/A2.2 $11.95 1/15/202137,100 shares $473.40 thousand No ChangeN/A1.6 $12.76 OPT Short Interest - Frequently Asked Questions What is Opthea's current short interest? Short interest is the volume of Opthea shares that have been sold short but have not yet been closed out or covered. As of March 31st, investors have sold 533,800 shares of OPT short. 0.36% of Opthea's shares are currently sold short. Learn More on Opthea's current short interest. What is a good short interest ratio for Opthea? 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. OPT shares currently have a short interest ratio of 18.0. Learn More on Opthea's short interest ratio. What is a good short interest percentage for Opthea? 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. 0.36% of Opthea's floating shares are currently sold short. Is Opthea's short interest increasing or decreasing? Opthea saw a increase in short interest in March. As of March 31st, there was short interest totaling 533,800 shares, an increase of 2.2% from the previous total of 522,200 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 Opthea's short interest compare to its competitors? 0.36% of Opthea's shares are currently sold short. Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Opthea: Disc Medicine, Inc. (10.66%), CG Oncology, Inc. (24.51%), Belite Bio, Inc. Sponsored ADR (0.61%), Mesoblast Limited (2.29%), Adaptive Biotechnologies Corporation (6.97%), Sarepta Therapeutics, Inc. (23.20%), ANI Pharmaceuticals, Inc. (11.48%), Arcutis Biotherapeutics, Inc. (15.32%), Vericel Corporation (11.62%), Dyne Therapeutics, Inc. (13.35%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Invesco QQQ ($21.93 billion), iShares 20+ Year Treasury Bond ETF ($9.31 billion), Strategy Inc ($8.42 billion), Charter Communications, Inc. ($4.52 billion), Apollo Global Management Inc. ($4.26 billion), Super Micro Computer, Inc. ($3.98 billion), Capital One Financial Corporation ($3.79 billion), TC Energy Corporation ($3.43 billion), AppLovin Corporation ($2.91 billion), and Schlumberger Limited ($2.89 billion). View all of the most shorted stocks. What does it mean to sell short Opthea stock? Short selling OPT is an investing strategy that aims to generate trading profit from Opthea as its price is falling. 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 Opthea? A short squeeze for Opthea 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 OPT, which in turn drives the price of the stock up even further. How often is Opthea'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 OPT, twice per month. The most recent reporting period available is March, 31 2025. More Short Interest Resources from MarketBeat Related Companies IRON Short Interest Data CGON Short Interest Data BLTE Short Interest Data MESO Short Interest Data ADPT Short Interest Data SRPT Short Interest Data ANIP Short Interest Data ARQT Short Interest Data VCEL Short Interest Data DYN Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:OPT) was last updated on 8/31/2025 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 | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredThis is my Christian duty“This land I will give to you…” — a 4,000-year-old line from Genesis may hold the key to unlocking a $150 tril...Paradigm Press | 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 | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. Now, Alex Green has identified AI’s Next Ma...The Oxford Club | SponsoredElon’s Secret Social Security BombshellTo All Americans Born Before April 16th, 1963: Did Trump Just Give The Green Light To Radically RE-DO Social S...Banyan Hill Publishing | SponsoredOut of 18,347 Cryptocurrencies... This is the ONLY OneThe Single Most Undervalued DeFi Protocol You've Never Heard Of If there's one cryptocurrency you should b...Crypto 101 Media | SponsoredTrump set to Boost Social Security Checks by 400%?If you're collecting or planning to collect social security... You should see this presentation about Presi...InvestorPlace | 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 Opthea Limited Unsponsored ADR Please log in to your account or sign up in order to add this asset to your watchlist. Share Opthea 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.
Free OPT Stock Alerts