Prothena (PRTA) Short Interest Ratio & Short Volume → Trump’s last act as President (From Porter & Company) (Ad) Free PRTA Stock Alerts $21.42 +1.08 (+5.31%) (As of 05/1/2024 ET) Add Compare Share Share Short InterestStock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSocial MediaStock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSocial Media Prothena Short Interest DataCurrent Short Volume6,630,000 sharesPrevious Short Volume6,470,000 sharesChange Vs. Previous Month+2.47%Dollar Volume Sold Short$145.79 millionShort Interest Ratio / Days to Cover10.1Last Record DateApril 15, 2024Outstanding Shares53,720,000 sharesPercentage of Shares Shorted12.34%Today's Trading Volume708,995 sharesAverage Trading Volume499,774 sharesToday's Volume Vs. Average142% Short Selling Prothena ? Sign up to receive the latest short interest report for Prothena and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort InterestDays to CoverShort Percent of FloatPRTA Short Interest Over TimePRTA Days to Cover Over TimePRTA Percentage of Float Shorted Over Time Ad The Freeport SocietyPOTUS in ‘25 Not Biden/Trump, ButAnd I believe when they do take the oath of office, their fingers will be crossed… and America will descend into chaos.Click here now to see my urgent election warning. Prothena Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/15/20246,630,000 shares $145.79 million +2.5%N/A10.1 $21.99 3/31/20246,470,000 shares $160.26 million +3.5%N/A8.1 $24.77 3/15/20246,250,000 shares $162.94 million +3.0%N/A7.6 $26.07 2/29/20246,070,000 shares $167.47 million +4.5%N/A7 $27.59 2/15/20245,810,000 shares $165.70 million +1.0%N/A6.6 $28.52 1/31/20245,750,000 shares $163.24 million -8.2%N/A6.8 $28.39 Get the Latest News and Ratings for PRTA and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Prothena and its competitors with MarketBeat's FREE daily newsletter. 1/15/20246,260,000 shares $217.03 million +3.0%N/A7 $34.67 12/31/20236,080,000 shares $220.95 million +4.5%N/A6.8 $36.34 12/15/20235,820,000 shares $232.74 million -15.0%N/A7.6 $39.99 11/30/20236,850,000 shares $223.17 million +10.7%N/A10.1 $32.58 11/15/20236,190,000 shares $217.15 million -4.8%N/A9.6 $35.08 10/31/20236,500,000 shares $236.99 million +28.0%N/A10.6 $36.46 10/15/20235,080,000 shares $223.93 million +15.7%N/A10.4 $44.08 9/30/20234,390,000 shares $211.82 million +2.6%N/A10.7 $48.25 9/15/20234,280,000 shares $224.53 million +3.9%N/A11.2 $52.46 8/31/20234,120,000 shares $217.62 million +11.4%N/A10.6 $52.82 8/15/20233,700,000 shares $223.33 million +0.8%N/A9.4 $60.36 7/31/20233,670,000 shares $252.75 million +0.8%N/A9 $68.87 7/15/20233,640,000 shares $254.84 million +3.4%N/A8.3 $70.01 6/30/20233,520,000 shares $240.35 million -4.4%N/A7.9 $68.28 6/15/20233,680,000 shares $267.06 million +10.8%N/A7.8 $72.57 5/31/20233,320,000 shares $220.55 million +3.4%N/A7.1 $66.43 5/15/20233,210,000 shares $240.65 million -1.8%N/A6.7 $74.97 4/30/20233,270,000 shares $172.07 million No ChangeN/A6.9 $52.62 4/15/20233,270,000 shares $164.91 million -11.9%N/A7.5 $50.43 3/31/20233,710,000 shares $179.82 million +7.5%N/A8.3 $48.47 3/15/20233,450,000 shares $169.15 million +11.7%N/A6.9 $49.03 2/28/20233,090,000 shares $172.30 million +4.4%N/A5.9 $55.76 2/15/20232,960,000 shares $159.60 million +6.5%N/A5.6 $53.92 1/31/20232,780,000 shares $157.21 million -3.5%N/A5 $56.55 1/15/20232,880,000 shares $163.87 million +9.1%N/A5 $56.90 12/30/20222,640,000 shares $159.06 million +9.5%N/A4.4 $60.25 12/15/20222,410,000 shares $141.03 million +6.6%N/A2.9 $58.52 11/30/20222,260,000 shares $141.27 million +1.4%N/A2.7 $62.51 11/15/20222,230,000 shares $138.64 million -8.2%N/A2.7 $62.17 10/31/20222,430,000 shares $149.30 million -10.7%N/A3.1 $61.44 10/15/20222,720,000 shares $149.19 million -16.6%6.2%3.7 $54.85 9/30/20223,260,000 shares $197.65 million +32.5%7.4%4.8 $60.63 9/15/20222,460,000 shares $73.80 million -8.2%5.6%6.5 $30.00 8/31/20222,680,000 shares $73.89 million +2.3%6.1%7.5 $27.57A.I. is a Tidal Wave - Here’s What to Buy (Ad)The internet generated more wealth than any other innovation in history - creating hundreds of thousands of new millionaires in America alone. Now A.I. could do the same. But if you're buying Microsoft or NVIDIA to profit - you're missing the big picture.Get the name and ticker symbol for free - just click here. PRTA Short Interest - Frequently Asked Questions What is Prothena's current short interest? Short interest is the volume of Prothena shares that have been sold short but have not yet been covered or closed out. As of April 15th, investors have sold 6,630,000 shares of PRTA short. Learn More on Prothena's current short interest. What is a good short interest ratio for Prothena? 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. PRTA shares currently have a short interest ratio of 10.0. Learn More on Prothena's short interest ratio. Is Prothena's short interest increasing or decreasing? Prothena saw a increase in short interest during the month of April. As of April 15th, there was short interest totaling 6,630,000 shares, an increase of 2.5% from the previous total of 6,470,000 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 Prothena's short interest compare to its competitors? Here is how the short interest of companies in the industry of "pharmaceutical preparations" compare to Prothena: AbCellera Biologics Inc. (11.25%), MannKind Co. (13.21%), Mirum Pharmaceuticals, Inc. (18.21%), Belite Bio, Inc (0.12%), Spyre Therapeutics, Inc. (10.55%), Homology Medicines, Inc. (0.81%), Collegium Pharmaceutical, Inc. (22.86%), Liquidia Co. (10.61%), Ironwood Pharmaceuticals, Inc. (13.96%), Pacira BioSciences, Inc. (7.42%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: T-Mobile US, Inc. ($3.70 billion), Occidental Petroleum Co. ($3.52 billion), Charter Communications, Inc. ($3.14 billion), General Motors ($2.68 billion), Coinbase Global, Inc. ($2.57 billion), Moderna, Inc. ($2.18 billion), Tractor Supply ($2.10 billion), Royal Caribbean Cruises Ltd. ($1.91 billion), TC Energy Co. ($1.90 billion), and Williams-Sonoma, Inc. ($1.78 billion). View all of the most shorted stocks. What does it mean to sell short Prothena stock? Short selling PRTA is an investing strategy that aims to generate trading profit from Prothena as its price is falling. PRTA shares are trading up $1.08 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 Prothena? A short squeeze for Prothena 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 PRTA, which in turn drives the price of the stock up even further. How often is Prothena'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 PRTA, twice per month. The most recent reporting period available is April, 15 2024. More Short Interest Resources from MarketBeat Related Companies: AbCellera Biologics Short Squeeze MannKind Short Squeeze Mirum Pharmaceuticals Short Squeeze Belite Bio Short Squeeze Spyre Therapeutics Short Squeeze Homology Medicines Short Squeeze Collegium Pharmaceutical Short Squeeze Liquidia Short Squeeze Ironwood Pharmaceuticals Short Squeeze Pacira 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:PRTA) was last updated on 5/2/2024 by MarketBeat.com Staff From Our PartnersHave You Seen Elon’s New A.I. Device? 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