Ardelyx (ARDX) Short Interest Ratio & Short Volume $4.00 -0.18 (-4.19%) As of 02:59 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Ardelyx Short Interest DataArdelyx (ARDX) has a short interest of 29.82 million shares. This marks a -1.23% decrease in short interest from the previous month. The short interest ratio (days to cover) is 6.0, indicating that it would take 6.0 days of the average trading volume of 4.46 million shares to cover all short positions.Current Short Interest29,820,000 sharesPrevious Short Interest30,190,000 sharesChange Vs. Previous Month-1.23%Dollar Volume Sold Short$164.31 millionShort Interest Ratio6.0 Days to CoverLast Record DateApril 30, 2025Outstanding Shares239,255,000 sharesPercentage of Shares Shorted12.46%Today's Trading Volume2,807,131 sharesAverage Trading Volume4,459,429 sharesToday's Volume Vs. Average63% Short Selling Ardelyx? Sign up to receive the latest short interest report for Ardelyx and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartARDX Short Interest Over TimeARDX Days to Cover Over TimeARDX Percentage of Float Shorted Over Time Ardelyx Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/202529,820,000 shares $164.31 million -1.2%N/A6 $5.51 4/15/202530,190,000 shares $140.08 million -1.5%13.5%7 $4.64 3/31/202530,640,000 shares $150.44 million +0.9%13.7%6.9 $4.91 3/15/202530,360,000 shares $166.07 million +1.8%13.6%7.1 $5.47 2/28/202529,820,000 shares $159.84 million +6.9%13.4%7.2 $5.36 2/15/202527,900,000 shares $161.54 million +4.8%12.5%6.6 $5.79 1/31/202526,630,000 shares $142.74 million +12.7%N/A5.6 $5.36 1/15/202523,620,000 shares $126.37 million -2.7%N/A4.9 $5.35 12/31/202424,280,000 shares $123.10 million +1.9%N/A5.5 $5.07 12/15/202423,820,000 shares $124.34 million -2.1%N/A5.6 $5.22 Get the Latest News and Ratings for ARDX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Ardelyx and its competitors with MarketBeat's FREE daily newsletter. 11/30/202424,320,000 shares $137.89 million +4.3%N/A6.1 $5.67 11/15/202423,310,000 shares $115.85 million -3.1%N/A6.1 $4.97 10/31/202424,060,000 shares $141.23 million +5.1%N/A7 $5.87 10/15/202422,890,000 shares $136.65 million -0.7%N/A7 $5.97 9/30/202423,050,000 shares $158.81 million -11.1%N/A6.7 $6.89 9/15/202425,930,000 shares $163.62 million +4.4%N/A6.3 $6.31 8/31/202424,850,000 shares $153.57 million -4.4%N/A5.8 $6.18 8/15/202425,980,000 shares $152.76 million -2.2%N/A5.7 $5.88 7/31/202426,560,000 shares $147.41 million -3.7%N/A5.8 $5.55 7/15/202427,590,000 shares $164.16 million -4.3%N/A5.4 $5.95 6/30/202428,830,000 shares $213.63 million -7.3%N/A5.6 $7.41 6/15/202431,090,000 shares $197.42 million +0.5%N/A6.4 $6.35 5/31/202430,940,000 shares $212.25 million -6.4%N/A6 $6.86 5/15/202433,040,000 shares $259.36 million -6.1%N/A5.9 $7.85 4/30/202435,170,000 shares $225.09 million +3.7%N/A5.9 $6.40 4/15/202433,930,000 shares $230.72 million -3.1%N/A6.2 $6.80 3/31/202435,020,000 shares $255.65 million -3.6%N/A5.5 $7.30 3/15/202436,310,000 shares $294.11 million +8.0%N/A5.8 $8.10 2/29/202433,610,000 shares $313.25 million +11.8%N/A5.1 $9.32 2/15/202430,060,000 shares $279.56 million +6.8%N/A4.7 $9.30 1/31/202428,160,000 shares $245.84 million -3.0%N/A4.7 $8.73 1/15/202429,020,000 shares $262.05 million -12.0%N/A4.5 $9.03 12/31/202332,980,000 shares $204.48 million +0.2%N/A4.6 $6.20 12/15/202332,930,000 shares $194.62 million -8.7%N/A5.1 $5.91 11/30/202336,080,000 shares $162.72 million -5.4%N/A5.7 $4.51 11/15/202338,120,000 shares $147.52 million +4.5%N/A5.6 $3.87 10/31/202336,470,000 shares $144.06 million +50.0%N/A5.4 $3.95 10/15/202324,310,000 shares $80.95 million +9.7%N/A3.8 $3.33 9/30/202322,170,000 shares $90.45 million -9.6%N/A4.6 $4.08 9/15/202324,510,000 shares $111.52 million -4.9%N/A4.6 $4.55Market Panic: Trump Just Dropped a Bomb on Your Stocks (Ad)tock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tariffs just lit the fuse. 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Get the FREE Guide Before Markets Open Tomorrow 8/31/202325,770,000 shares $109.78 million -7.1%N/A5 $4.26 8/15/202327,750,000 shares $106.84 million +0.2%N/A6 $3.85 7/31/202327,700,000 shares $109.14 million +4.3%N/A5.5 $3.94 7/15/202326,560,000 shares $90.30 million +1.7%N/A5.2 $3.40 6/30/202326,130,000 shares $88.58 million +42.0%N/A4.7 $3.39 6/15/202318,400,000 shares $72.13 million +7.3%N/A3.1 $3.92 5/31/202317,150,000 shares $57.28 million +2.8%N/A2.8 $3.34 5/15/202316,690,000 shares $74.44 million -8.5%N/A2.3 $4.46 4/30/202318,240,000 shares $81.35 million -4.0%N/A2.6 $4.46 4/15/202319,000,000 shares $89.49 million +7.2%N/A2.7 $4.71 3/31/202317,720,000 shares $84.88 million +36.4%N/A2.4 $4.79 3/15/202312,990,000 shares $51.83 million +18.2%N/A1.6 $3.99 2/28/202310,990,000 shares $31.65 million +8.7%N/A1.4 $2.88 2/15/202310,110,000 shares $30.53 million -4.4%N/A1.4 $3.02 1/31/202310,580,000 shares $31.00 million -9.5%N/A1 $2.93 1/15/202311,690,000 shares $36.94 million -5.5%N/A1.1 $3.16 12/30/202212,370,000 shares $35.25 million +17.6%N/A1.3 $2.85 12/15/202210,520,000 shares $20.41 million -15.2%N/A1.2 $1.94 11/30/202212,410,000 shares $21.35 million +44.5%N/A1.5 $1.72 11/15/20228,590,000 shares $10.48 million +17.0%N/A1.1 $1.22 10/31/20227,340,000 shares $11.01 million -7.6%N/A2.1 $1.50 10/15/20227,940,000 shares $10.96 million +2.1%N/A2.4 $1.38 9/30/20227,780,000 shares $9.26 million +12.9%N/A2.4 $1.19 9/15/20226,890,000 shares $9.44 million -14.9%N/A2.1 $1.37 8/31/20228,100,000 shares $7.68 million -4.0%N/A2.5 $0.95 8/15/20228,440,000 shares $8.19 million -22.4%N/A3.4 $0.97 7/31/202210,880,000 shares $7.59 million +0.4%N/A4.5 $0.70 7/15/202210,840,000 shares $7.58 million +3.5%N/A3.4 $0.70 6/30/202210,470,000 shares $6.18 million -13.9%N/A3.1 $0.59 6/15/202212,160,000 shares $6.66 million -6.2%N/A3.4 $0.55 5/31/202212,960,000 shares $8.50 million +11.2%N/A4 $0.66 5/15/202211,660,000 shares $7.62 million +1.0%N/A3.3 $0.65 4/30/202211,540,000 shares $9.50 million +20.0%N/A3.2 $0.82 4/15/20229,620,000 shares $8.59 million -1.4%N/A2.7 $0.89 3/31/20229,760,000 shares $10.44 million +3.7%N/A3.1 $1.07 3/15/20229,410,000 shares $8.65 million +9.8%N/A2.5 $0.92 2/28/20228,570,000 shares $6.60 million +1.1%N/A1.1 $0.77 2/15/20228,480,000 shares $6.21 million +15.9%N/A0.5 $0.73 1/31/20227,320,000 shares $6.05 million -7.0%N/A0.4 $0.83 1/15/20227,870,000 shares $7.33 million -1.8%N/A0.5 $0.93 12/31/20218,010,000 shares $8.81 million -34.5%N/A0.5 $1.10 12/15/202112,230,000 shares $14.68 million +92.9%13.1%0.7 $1.20 11/30/20216,340,000 shares $7.23 million +7.6%6.9%0.4 $1.14 11/15/20215,890,000 shares $6.60 million -23.4%6.5%1.7 $1.12 10/29/20217,690,000 shares $9.30 million +18.5%9.3%1.9 $1.21 10/15/20216,490,000 shares $7.01 million -2.0%7.7%0.9 $1.08 9/30/20216,620,000 shares $8.74 million -16.0%7.8%0.6 $1.32 9/15/20217,880,000 shares $10.01 million -8.8%9.3%0.8 $1.27 8/31/20218,640,000 shares $12.18 million -15.5%10.3%0.8 $1.41 8/13/202110,230,000 shares $14.73 million -3.4%13.1%1.1 $1.44This Is The Moment You Betray Trump (Or Prove Them Wrong) (Ad)They said you wouldn’t last—that Bidenflation, Wall Street selloffs, and DEI funds would break your loyalty to Trump’s economic plan. 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This free 2025 Wealth Protection Guide reveals how you can use a legal IRS loophole—nicknamed “Piggy Bank”—to shield your savings.Protect your savings without betraying Trump 7/30/202110,590,000 shares $18.43 million +7.2%14.2%1.2 $1.74 7/15/20219,880,000 shares $74.00 million +8.1%13.2%1.7 $7.49 6/30/20219,140,000 shares $69.28 million +20.9%12.3%4.1 $7.58 6/15/20217,560,000 shares $55.19 million -10.0%10.1%3.4 $7.30 5/28/20218,400,000 shares $60.06 million -10.1%11.3%3.9 $7.15 5/14/20219,340,000 shares $62.02 million +5.2%N/A4.4 $6.64 4/30/20218,880,000 shares $74.86 million -11.4%N/A4.4 $8.43 4/15/202110,020,000 shares $78.56 million +13.1%N/A6.2 $7.84 3/31/20218,860,000 shares $54.93 million +54.4%N/A8.3 $6.20 3/15/20215,740,000 shares $40.01 million +23.7%N/A6.7 $6.97 2/26/20214,640,000 shares $30.02 million -4.1%N/A5.7 $6.47 2/12/20214,840,000 shares $35.19 million +4.5%N/A6.5 $7.27 1/29/20214,630,000 shares $31.81 million +2.2%N/A6.7 $6.87 1/15/20214,530,000 shares $31.39 million -5.2%N/A6.9 $6.93 12/31/20204,780,000 shares $32.17 million -4.0%N/A8.1 $6.73 12/15/20204,980,000 shares $34.26 million -14.6%N/A9.1 $6.88 11/30/20205,830,000 shares $36.79 million +13.0%N/A12 $6.31 11/15/20205,160,000 shares $29.88 million -9.3%N/A10.7 $5.79 10/30/20205,690,000 shares $29.76 million +12.7%N/A12 $5.23 10/15/20205,050,000 shares $28.46 million -8.0%N/A10.1 $5.64 9/30/20205,490,000 shares $28.82 million -7.3%N/A0 $5.25 9/15/20205,920,000 shares $36.05 million -6.6%N/A9.5 $6.09 8/31/20206,340,000 shares $36.39 million -2.5%N/A10.2 $5.74 8/14/20206,500,000 shares $36.47 million +9.4%N/A9.9 $5.61 7/31/20205,940,000 shares $33.56 million -3.6%N/A8.3 $5.65 7/15/20206,160,000 shares $39.36 million +13.2%N/A8.4 $6.39 6/30/20205,440,000 shares $37.64 million +68.9%N/A7.1 $6.92 6/15/20203,220,000 shares $21.22 million +10.3%N/A4.4 $6.59 5/29/20202,920,000 shares $21.40 million +4.3%N/A3.8 $7.33 ARDX Short Interest - Frequently Asked Questions What is Ardelyx's current short interest? Short interest is the volume of Ardelyx shares that have been sold short but have not yet been covered or closed out. As of April 30th, traders have sold 29,820,000 shares of ARDX short. Learn More on Ardelyx's current short interest. What is a good short interest ratio for Ardelyx? 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. ARDX shares currently have a short interest ratio of 6.0. Learn More on Ardelyx's short interest ratio. Which institutional investors are shorting Ardelyx? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Ardelyx: Jane Street Group LLC, and Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is Ardelyx's short interest increasing or decreasing? Ardelyx saw a decline in short interest in April. As of April 30th, there was short interest totaling 29,820,000 shares, a decline of 1.2% from the previous total of 30,190,000 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 Ardelyx's short interest compare to its competitors? Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Ardelyx: Akero Therapeutics, Inc. (8.50%), Arcellx, Inc. (17.92%), Zai Lab Limited (6.03%), Viking Therapeutics, Inc. (23.63%), Crinetics Pharmaceuticals, Inc. (10.51%), Alvotech (0.93%), Scholar Rock Holding Co. (18.09%), Merus (8.52%), ACADIA Pharmaceuticals Inc. (9.12%), Catalyst Pharmaceuticals, Inc. (6.57%), 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 Ardelyx stock? Short selling ARDX is an investing strategy that aims to generate trading profit from Ardelyx as its price is falling. ARDX shares are trading down $0.18 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 Ardelyx? A short squeeze for Ardelyx 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 ARDX, which in turn drives the price of the stock up even further. How often is Ardelyx'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 ARDX, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies Akero Therapeutics Short Interest Data Arcellx Short Interest Data Zai Lab Short Interest Data Viking Therapeutics Short Interest Data Crinetics Pharmaceuticals Short Interest Data Alvotech Short Interest Data Scholar Rock Short Interest Data Merus Short Interest Data ACADIA Pharmaceuticals Short Interest Data Catalyst Pharmaceuticals 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:ARDX) 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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