Amprius Technologies (AMPX) Short Interest Ratio & Short Volume $3.82 -0.12 (-2.92%) Closing price 06/13/2025 03:59 PM EasternExtended Trading$3.87 +0.05 (+1.20%) As of 06/13/2025 07:58 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Amprius Technologies Short Interest DataAmprius Technologies (AMPX) has a short interest of 5.86 million shares, representing 6.78% of the float (the number of shares available for trading by the public). This marks a 10.57% increase in short interest from the previous month. The short interest ratio (days to cover) is 1.7, indicating that it would take 1.7 days of the average trading volume of 2.56 million shares to cover all short positions.Current Short Interest5,860,000 sharesPrevious Short Interest5,300,000 sharesChange Vs. Previous Month+10.57%Dollar Volume Sold Short$15.76 millionShort Interest Ratio1.7 Days to CoverLast Record DateMay 31, 2025Outstanding Shares117,927,000 sharesFloat Size86,390,000 sharesShort Percent of Float6.78%Today's Trading Volume5,086,555 sharesAverage Trading Volume2,564,430 sharesToday's Volume Vs. Average198% Short Selling Amprius Technologies? Sign up to receive the latest short interest report for Amprius Technologies and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartAMPX Short Interest Over TimeAMPX Days to Cover Over TimeAMPX Percentage of Float Shorted Over Time Amprius Technologies Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 5/31/20255,860,000 shares $15.76 million +10.6%6.8%1.7 $2.69 5/15/20255,300,000 shares $14.58 million -4.7%6.1%1.6 $2.75 4/30/20255,560,000 shares $11.95 million -1.2%6.8%1.8 $2.15 4/15/20255,630,000 shares $13.60 million -18.6%7.0%1.8 $2.42 3/31/20256,920,000 shares $18.58 million +84.5%8.6%1.9 $2.69 3/15/20253,750,000 shares $7.63 million -9.2%4.6%0.9 $2.04 2/28/20254,130,000 shares $10.55 million -7.8%5.4%1.1 $2.56 2/15/20254,480,000 shares $15.12 million +12.6%5.8%1.2 $3.38 1/31/20253,980,000 shares $13.15 million +42.7%5.1%1 $3.30 1/15/20252,790,000 shares $9.23 million -4.5%3.6%0.8 $3.31 Get the Latest News and Ratings for AMPX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Amprius Technologies and its competitors with MarketBeat's FREE daily newsletter. 12/31/20242,920,000 shares $8.18 million -20.2%3.8%0.9 $2.80 12/15/20243,660,000 shares $6.26 million +5.8%4.8%1.5 $1.71 11/30/20243,460,000 shares $7.40 million +3.6%4.8%1.5 $2.14 11/15/20243,340,000 shares $7.06 million -30.4%4.5%1.7 $2.12 10/31/20244,800,000 shares $6.46 million +42.0%6.1%3.1 $1.35 10/15/20243,380,000 shares $4.29 million +21.6%9.2%2.9 $1.27 9/30/20242,780,000 shares $3.09 million +7.8%7.6%3.1 $1.11 9/15/20242,580,000 shares $2.30 million +4.5%7.0%3.9 $0.89 8/31/20242,470,000 shares $2.64 million +8.8%6.7%3.9 $1.07 8/15/20242,270,000 shares $2.52 million +57.6%6.7%3.5 $1.11 7/31/20241,440,000 shares $1.71 million +42.6%4.3%1.8 $1.19 7/15/20241,010,000 shares $1.39 million -8.2%3.0%1.2 $1.38 6/30/20241,100,000 shares $1.40 million -61.7%4.6%1.3 $1.27 6/15/20242,870,000 shares $3.13 million -40.0%13.8%3.3 $1.09 5/31/20244,780,000 shares $6.64 million +30.3%24.0%5.6 $1.39 5/15/20243,670,000 shares $4.84 million +100.6%23.5%4.5 $1.32 4/30/20241,830,000 shares $3.42 million +28.9%11.7%3 $1.87 4/15/20241,420,000 shares $2.53 million -10.7%9.7%2.5 $1.78 3/31/20241,590,000 shares $4.21 million +3.9%10.2%2.8 $2.65 3/15/20241,530,000 shares $4.21 million +19.5%9.9%2.4 $2.75 2/29/20241,280,000 shares $4.15 million +25.5%6.9%2.2 $3.24 2/15/20241,020,000 shares $4.03 million +30.5%5.5%1.8 $3.95 1/31/2024781,400 shares $3.20 million +0.2%4.2%1.4 $4.09 1/15/2024780,100 shares $3.90 million -3.1%4.2%1.5 $5.00 12/31/2023805,000 shares $4.26 million -8.6%4.3%1.7 $5.29 12/15/2023880,900 shares $3.07 million -24.7%5.2%2.1 $3.48 11/30/20231,170,000 shares $4.81 million -2.5%7.5%2.4 $4.11 11/15/20231,200,000 shares $4.31 million +9.1%7.7%2.5 $3.60 10/31/20231,100,000 shares $3.21 million -11.3%7.1%2.3 $2.92 10/15/20231,240,000 shares $4.33 million +3.3%8.0%2.8 $3.49Elon’s BIGGEST warning yet? 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Click here to see why Tesla's about to prove everyone wrong... again. 9/30/20231,200,000 shares $5.69 million -29.0%8.4%2.8 $4.74 9/15/20231,690,000 shares $6.68 million +55.1%11.8%4.6 $3.95 8/31/20231,090,000 shares $5.35 million +7.9%7.6%3.6 $4.91 8/15/20231,010,000 shares $6.01 million -12.9%7.0%3.7 $5.95 7/31/20231,160,000 shares $8.73 million -10.1%8.1%4.4 $7.53 7/15/20231,290,000 shares $10.11 million +29.7%9.0%4.8 $7.84 6/30/2023995,000 shares $7.14 million +12.8%6.9%3.6 $7.18 6/15/2023882,500 shares $7.75 million +66.7%6.2%2.9 $8.78 5/31/2023529,300 shares $4.03 million -18.5%3.5%1.9 $7.61 5/15/2023649,400 shares $5.63 million No Change6.3%2.9 $8.67 AMPX Short Interest - Frequently Asked Questions What is Amprius Technologies' current short interest? Short interest is the volume of Amprius Technologies shares that have been sold short but have not yet been closed out or covered. As of May 31st, investors have sold 5,860,000 shares of AMPX short. 6.78% of Amprius Technologies' shares are currently sold short. Learn More on Amprius Technologies' current short interest. What is a good short interest ratio for Amprius Technologies? 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. AMPX shares currently have a short interest ratio of 2.0. Learn More on Amprius Technologies's short interest ratio. Which institutional investors are shorting Amprius Technologies? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Amprius Technologies: Simplex Trading LLC, and Belvedere Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Amprius Technologies? 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. 6.78% of Amprius Technologies' floating shares are currently sold short. Is Amprius Technologies' short interest increasing or decreasing? Amprius Technologies saw a increase in short interest during the month of May. As of May 31st, there was short interest totaling 5,860,000 shares, an increase of 10.6% from the previous total of 5,300,000 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 Amprius Technologies' float size? Amprius Technologies currently has issued a total of 117,927,000 shares. Some of Amprius Technologies' 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. Amprius Technologies currently has a public float of 86,390,000 shares. How does Amprius Technologies' short interest compare to its competitors? 6.78% of Amprius Technologies' shares are currently sold short. Here is how the short interest of companies in the industry of "electrical equipment" compare to Amprius Technologies: Microvast Holdings, Inc. (10.29%), Plug Power Inc. (25.18%), Eos Energy Enterprises, Inc. (34.65%), Fluence Energy, Inc. (13.98%), Byrna Technologies Inc. (19.85%), NET Power Inc. (15.75%), Ballard Power Systems Inc. (8.20%), SES AI Co. (7.93%), GrafTech International Ltd. (7.97%), Solid Power, Inc. (13.54%), 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 ($64.96 billion), Invesco QQQ ($27.88 billion), iShares Russell 2000 ETF ($19.94 billion), iShares 20+ Year Treasury Bond ETF ($9.69 billion), Strategy Incorporated ($8.58 billion), SPDR S&P Biotech ETF ($5.72 billion), Invesco S&P 500 Equal Weight ETF ($5.45 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($4.70 billion), Charter Communications, Inc. ($4.54 billion), and Industrial Select Sector SPDR Fund ($4.49 billion). View all of the most shorted stocks. What does it mean to sell short Amprius Technologies stock? Short selling AMPX is an investing strategy that aims to generate trading profit from Amprius Technologies as its price is falling. AMPX shares are trading down $0.12 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 Amprius Technologies? A short squeeze for Amprius Technologies 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 AMPX, which in turn drives the price of the stock up even further. How often is Amprius Technologies' 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 AMPX, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies Microvast Short Interest Plug Power Short Interest Eos Energy Enterprises Short Interest Fluence Energy Short Interest Byrna Technologies Short Interest NET Power Short Interest Ballard Power Systems Short Interest SES AI Short Interest GrafTech International Short Interest Solid Power Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NYSE:AMPX) was last updated on 6/14/2025 by MarketBeat.com Staff From Our PartnersThe Trump Dump is starting; Get out of stocks now?The first 365 days of the Trump presidency… Will be the best time to get rich in American history.Paradigm Press | SponsoredIs Elon's empire crumbling?The Tesla Shock Nobody Sees Coming While headlines scream "Tesla is doomed"... 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