Align Technology (ALGN) Short Interest Ratio & Short Volume $141.29 -0.69 (-0.49%) As of 12:21 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 Align Technology Short Interest DataAlign Technology (ALGN) has a short interest of 2.74 million shares, representing 4.04% of the float (the number of shares available for trading by the public). This marks a 0.00% change in short interest from the previous month. The short interest ratio (days to cover) is 2.1, indicating that it would take 2.1 days of the average trading volume of 1.22 million shares to cover all short positions.Current Short Interest2,740,000 sharesPrevious Short Interest2,740,000 sharesChange Vs. Previous MonthNo ChangeDollar Volume Sold Short$353.49 millionShort Interest Ratio2.1 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares72,490,000 sharesFloat Size67,870,000 sharesShort Percent of Float4.04%Today's Trading Volume375,770 sharesAverage Trading Volume1,220,833 sharesToday's Volume Vs. Average31% Short Selling Align Technology? Sign up to receive the latest short interest report for Align Technology 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. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartALGN Short Interest Over TimeALGN Days to Cover Over TimeALGN Percentage of Float Shorted Over Time Align Technology Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/20252,740,000 shares $353.49 million No Change4.0%2.1 $129.01 7/15/20252,740,000 shares $528.30 million -2.5%4.0%2.9 $192.81 6/30/20252,810,000 shares $532.02 million -7.0%4.1%2.7 $189.33 6/15/20253,020,000 shares $537.11 million -1.0%4.5%2.8 $177.85 5/31/20253,050,000 shares $551.29 million +2.0%4.5%2.6 $180.75 5/15/20252,990,000 shares $558.29 million -6.3%4.4%2.4 $186.72 4/30/20253,190,000 shares $552.83 million -13.8%4.7%2.5 $173.30 4/15/20253,700,000 shares $607.36 million +7.6%5.4%3.1 $164.15 3/31/20253,440,000 shares $546.48 million -9.7%5.0%3.1 $158.86 3/15/20253,810,000 shares $633.22 million +0.8%5.5%3.9 $166.20 Get the Latest News and Ratings for ALGN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Align Technology and its competitors with MarketBeat's FREE daily newsletter. 2/28/20253,780,000 shares $706.97 million +31.3%5.5%4.4 $187.03 2/15/20252,880,000 shares $595.50 million +27.4%4.1%3.7 $206.77 1/31/20252,260,000 shares $495.19 million -3.4%3.2%3 $219.11 1/15/20252,340,000 shares $504.93 million -13.7%3.4%3.1 $215.78 12/31/20242,710,000 shares $565.06 million +1.9%3.9%3.4 $208.51 12/15/20242,660,000 shares $626.14 million +5.1%3.8%3.3 $235.39 11/30/20242,530,000 shares $588.91 million -15.7%3.6%3.2 $232.77 11/15/20243,000,000 shares $671.07 million +3.5%4.3%3.8 $223.69 10/31/20242,900,000 shares $594.59 million -3.0%4.2%3.8 $205.03 10/15/20242,990,000 shares $655.26 million -3.2%4.3%3.7 $219.15 9/30/20243,090,000 shares $785.85 million +5.1%4.4%4.1 $254.32 9/15/20242,940,000 shares $716.57 million +7.7%4.2%3.7 $243.73 8/31/20242,730,000 shares $647.61 million No Change3.9%3.3 $237.22 8/15/20242,730,000 shares $642.45 million +21.9%3.9%3.1 $235.33 7/31/20242,240,000 shares $519.41 million +6.2%3.2%2.6 $231.88 7/15/20242,110,000 shares $506.97 million +5.0%3.0%2.7 $240.27 6/30/20242,010,000 shares $485.27 million +9.2%2.9%2.7 $241.43 6/15/20241,840,000 shares $471.06 million +19.5%2.6%2.5 $256.01 5/31/20241,540,000 shares $396.10 million +2.7%2.2%2.3 $257.21 5/15/20241,500,000 shares $420.48 million +16.3%2.1%2.5 $280.32 4/30/20241,290,000 shares $364.27 million -6.5%1.8%2 $282.38 4/15/20241,380,000 shares $420.54 million -2.1%2.0%1.8 $304.74 3/31/20241,410,000 shares $462.37 million -0.7%2.0%1.9 $327.92 3/15/20241,420,000 shares $446.38 million -13.9%2.0%1.8 $314.35 2/29/20241,650,000 shares $498.99 million -5.2%2.4%1.7 $302.42 2/15/20241,740,000 shares $539.00 million +19.2%2.4%1.7 $309.77 1/31/20241,460,000 shares $390.29 million -8.8%2.0%1.3 $267.32 1/15/20241,600,000 shares $434.62 million -18.0%2.2%1.3 $271.64 12/31/20231,950,000 shares $534.30 million -29.6%2.7%1.6 $274.00 12/15/20232,770,000 shares $706.38 million -7.7%3.9%2.3 $255.01When the levee breaks (Ad)The U.S. Treasury just confirmed it plans to borrow $1.01 trillion this quarter—nearly double what was projected. According to Porter Stansberry, this is panic-level borrowing… and a clear sign we’re nearing America’s financial breaking point. In his latest emergency briefing, Porter outlines why the cracks in our system are widening fast—and how Trump’s policies may be accelerating the collapse. More importantly, he reveals three moves you can make now to protect and potentially grow your wealth before the levee breaks.Click here to watch the urgent broadcast and get ahead of what’s coming. 11/30/20233,000,000 shares $641.40 million +2.0%4.2%2.9 $213.80 11/15/20232,940,000 shares $602.88 million -16.7%4.1%3 $205.06 10/31/20233,530,000 shares $651.60 million +47.7%4.9%4 $184.59 10/15/20232,390,000 shares $635.72 million +13.8%3.3%3.5 $265.99 9/30/20232,100,000 shares $641.17 million +5.5%2.9%3 $305.32 9/15/20231,990,000 shares $660.86 million -4.3%2.8%2.9 $332.09 8/31/20232,080,000 shares $769.89 million -8.4%2.9%2.9 $370.14 8/15/20232,270,000 shares $819.58 million No Change3.2%3.1 $361.05 7/31/20232,270,000 shares $857.81 million -11.0%3.2%3 $377.89 7/15/20232,550,000 shares $935.54 million -6.6%3.6%3.3 $366.88 6/30/20232,730,000 shares $965.44 million +8.8%3.8%3.9 $353.64 6/15/20232,510,000 shares $836.31 million -3.8%3.5%3.5 $333.19 5/31/20232,610,000 shares $737.74 million +42.6%3.7%3.4 $282.66 5/15/20231,830,000 shares $544.02 million -20.8%2.6%2.2 $297.28 4/30/20232,310,000 shares $751.44 million -4.6%3.2%2.6 $325.30 4/15/20232,420,000 shares $828.29 million +3.9%3.4%2.5 $342.27 3/31/20232,330,000 shares $778.55 million -12.7%3.3%2.3 $334.14 3/15/20232,670,000 shares $849.51 million +9.9%3.7%2.5 $318.17 2/28/20232,430,000 shares $752.09 million -14.1%3.4%2.3 $309.50 2/15/20232,830,000 shares $957.64 million +34.8%3.9%2.7 $338.39 1/31/20232,100,000 shares $566.43 million -8.7%2.9%1.9 $269.73 1/15/20232,300,000 shares $551.45 million +31.4%3.1%2.1 $239.76 12/30/20221,750,000 shares $369.08 million -20.5%2.4%1.7 $210.90 12/15/20222,200,000 shares $444.33 million -8.7%3.0%2 $201.97 11/30/20222,410,000 shares $473.95 million -4.4%3.3%2.3 $196.66 11/15/20222,520,000 shares $536.56 million -9.0%3.5%2.5 $212.92 10/31/20222,770,000 shares $538.21 million +18.9%3.8%2.9 $194.30 10/15/20222,330,000 shares $469.80 million -9.7%3.2%2.7 $201.63 9/30/20222,580,000 shares $534.34 million +24.6%3.5%3 $207.11 9/15/20222,070,000 shares $521.64 million -5.1%2.8%2.4 $252.00 8/31/20222,180,000 shares $531.27 million -4.4%3.0%2.4 $243.70 8/15/20222,280,000 shares $652.51 million -3.8%3.1%2.3 $286.19 7/31/20222,370,000 shares $665.90 million -12.9%3.2%2.2 $280.97 7/15/20222,720,000 shares $693.27 million +4.2%3.7%2.3 $254.88 6/30/20222,610,000 shares $617.71 million +15.5%3.6%2.3 $236.67 6/15/20222,260,000 shares $550.94 million +30.6%3.1%2.1 $243.78 5/31/20221,730,000 shares $480.32 million +1.2%2.3%1.7 $277.64 5/15/20221,710,000 shares $471.14 million +29.6%2.3%1.8 $275.52 4/30/20221,320,000 shares $382.68 million -9.6%1.8%1.4 $289.91 4/15/20221,460,000 shares $598.34 million +2.1%2.0%1.7 $409.82 3/31/20221,430,000 shares $623.48 million -13.3%N/A1.6 $436.00 3/15/20221,650,000 shares $644.70 million -7.3%2.2%1.9 $390.73 2/28/20221,780,000 shares $910.40 million -1.7%2.4%2.2 $511.46 2/15/20221,810,000 shares $956.11 million +7.1%2.5%2.3 $528.24 1/31/20221,690,000 shares $836.48 million +9.7%2.3%2.3 $494.96 1/15/20221,540,000 shares $807.93 million +23.2%2.1%2.2 $524.63 12/31/20211,250,000 shares $821.48 million +13.6%1.7%1.9 $657.18 12/15/20211,100,000 shares $662.21 million -14.1%1.5%1.8 $602.01 11/30/20211,280,000 shares $782.76 million -17.4%1.7%2.1 $611.53 11/15/20211,550,000 shares $1.05 billion +24.0%2.1%2.6 $680.19When the levee breaks (Ad)The U.S. Treasury just confirmed it plans to borrow $1.01 trillion this quarter—nearly double what was projected. According to Porter Stansberry, this is panic-level borrowing… and a clear sign we’re nearing America’s financial breaking point. In his latest emergency briefing, Porter outlines why the cracks in our system are widening fast—and how Trump’s policies may be accelerating the collapse. More importantly, he reveals three moves you can make now to protect and potentially grow your wealth before the levee breaks.Click here to watch the urgent broadcast and get ahead of what’s coming. 10/29/20211,250,000 shares $780.46 million -9.4%1.7%2.1 $624.37 10/15/20211,380,000 shares $813.66 million -2.1%1.9%2.4 $589.61 9/30/20211,410,000 shares $938.26 million -18.0%1.9%2.7 $665.43 9/15/20211,720,000 shares $1.22 billion +1.2%2.3%3.1 $710.31 8/31/20211,700,000 shares $1.21 billion +3.0%2.3%3 $709.00 8/13/20211,650,000 shares $1.14 billion +0.6%2.2%2.9 $691.19 7/30/20211,640,000 shares $1.14 billion +17.1%2.2%2.8 $695.80 7/15/20211,400,000 shares $870.38 million -8.5%1.9%2.4 $621.70 6/30/20211,530,000 shares $934.83 million -25.0%2.1%2.7 $611.00 6/15/20212,040,000 shares $1.22 billion -4.7%2.8%3.7 $600.05 5/28/20212,140,000 shares $1.26 billion +9.2%2.9%3.7 $590.15 5/14/20211,960,000 shares $1.09 billion +13.3%2.7%3 $553.62 4/30/20211,730,000 shares $1.05 billion -12.2%2.4%2.7 $604.34 4/15/20211,970,000 shares $1.17 billion +11.9%2.7%3.1 $594.93 3/31/20211,760,000 shares $922.82 million +7.3%2.4%2.7 $524.33 3/15/20211,640,000 shares $879.76 million +23.3%2.2%2.7 $536.44 2/26/20211,330,000 shares $739.63 million +3.9%1.8%2.3 $556.11 2/12/20211,280,000 shares $766.72 million -1.5%1.7%2.4 $599.00 1/29/20211,300,000 shares $697.55 million -5.1%1.8%2.4 $536.58 1/15/20211,370,000 shares $759.86 million +1.5%1.9%2.3 $554.64 12/31/20201,350,000 shares $707.83 million -6.3%1.9%2 $524.32 12/15/20201,440,000 shares $726.21 million -13.8%2.0%2 $504.31 11/30/20201,670,000 shares $794.09 million -16.1%2.3%2.2 $475.50 11/15/20201,990,000 shares $909.95 million -1.5%2.7%2.6 $457.26 10/30/20202,020,000 shares $881.87 million -22.3%2.8%2.7 $436.57 10/15/20202,600,000 shares $866.06 million -6.5%3.6%3.6 $333.10 9/30/20202,780,000 shares $910.06 million -14.7%3.8%3.9 $327.36 9/15/20203,260,000 shares $1.09 billion +5.5%4.5%4.4 $335.24 8/31/20203,090,000 shares $917.67 million -8.6%4.3%3.9 $296.98 ALGN Short Interest - Frequently Asked Questions What is Align Technology's current short interest? Short interest is the volume of Align Technology shares that have been sold short but have not yet been covered or closed out. As of July 31st, traders have sold 2,740,000 shares of ALGN short. 4.04% of Align Technology's shares are currently sold short. Learn More on Align Technology's current short interest. What is a good short interest ratio for Align Technology? 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. ALGN shares currently have a short interest ratio of 2.0. Learn More on Align Technology's short interest ratio. Which institutional investors are shorting Align Technology? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Align Technology: Squarepoint Ops LLC, Group One Trading LLC, BNP Paribas Financial Markets, Jane Street Group LLC, Squarepoint Ops LLC, Qube Research & Technologies Ltd, Maven Securities LTD, Walleye Capital LLC, Walleye Trading LLC, Lido Advisors LLC, Capital Fund Management S.A., JPMorgan Chase & Co., VELA Investment Management LLC, and HB Wealth Management LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Align Technology? 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. 4.04% of Align Technology's floating shares are currently sold short. What is Align Technology's float size? Align Technology currently has issued a total of 72,490,000 shares. Some of Align Technology'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. Align Technology currently has a public float of 67,870,000 shares. How does Align Technology's short interest compare to its competitors? 4.04% of Align Technology's shares are currently sold short. Here is how the short interest of companies in the sector of "medical" compare to Align Technology: DexCom, Inc. (2.17%), HealthEquity, Inc. (5.64%), Henry Schein, Inc. (7.45%), Medpace Holdings, Inc. (11.01%), Quanterix Corporation (8.41%), Cardinal Health, Inc. (2.34%), Haemonetics Corporation (6.48%), McKesson Corporation (1.52%), ResMed Inc. (6.20%), West Pharmaceutical Services, Inc. (3.04%), 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 ($70.87 billion), Invesco QQQ ($30.12 billion), iShares Russell 2000 ETF ($19.85 billion), iShares 20+ Year Treasury Bond ETF ($10.34 billion), Strategy Inc ($8.98 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.61 billion), SPDR S&P Biotech ETF ($6.81 billion), Invesco S&P 500 Equal Weight ETF ($6.14 billion), Palo Alto Networks, Inc. ($5.97 billion), and Super Micro Computer, Inc. ($5.28 billion). View all of the most shorted stocks. What does it mean to sell short Align Technology stock? Short selling ALGN is an investing strategy that aims to generate trading profit from Align Technology as its price is falling. ALGN shares are trading down $0.69 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 Align Technology? A short squeeze for Align Technology 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 ALGN, which in turn drives the price of the stock up even further. How often is Align Technology'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 ALGN, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies DXCM Short Interest Data HQY Short Interest Data HSIC Short Interest Data MEDP Short Interest Data QTRX Short Interest Data CAH Short Interest Data HAE Short Interest Data MCK Short Interest Data RMD Short Interest Data WST 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:ALGN) was last updated on 8/28/2025 by MarketBeat.com Staff From Our PartnersBuffett, Gates and Bezos Quietly Dumping Stocks—Here's WhyImagine a bull market so powerful, every single investor became a millionaire. 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While U.S. firms push ...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 Align Technology, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Align Technology 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. 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