Monolithic Power Systems (MPWR) Short Interest Ratio & Short Volume $827.35 -21.46 (-2.53%) As of 12:32 PM Eastern This is a fair market value price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Monolithic Power Systems Short Interest DataMonolithic Power Systems (MPWR) has a short interest of 2.40 million shares, representing 5.19% of the float (the number of shares available for trading by the public). This marks a -1.23% decrease in short interest from the previous month. The short interest ratio (days to cover) is 3.9, indicating that it would take 3.9 days of the average trading volume of 808,727 shares to cover all short positions.Current Short Interest2,400,000 sharesPrevious Short Interest2,430,000 sharesChange Vs. Previous Month-1.23%Dollar Volume Sold Short$1.71 billionShort Interest Ratio3.9 Days to CoverLast Record DateJuly 31, 2025Outstanding Shares47,890,000 sharesShort Percent of Float5.19%Today's Trading Volume137,487 sharesAverage Trading Volume808,727 sharesToday's Volume Vs. Average17% Short Selling Monolithic Power Systems? Sign up to receive the latest short interest report for Monolithic Power Systems and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartMPWR Short Interest Over TimeMPWR Days to Cover Over TimeMPWR Percentage of Float Shorted Over Time Monolithic Power Systems Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/31/20252,400,000 shares $1.71 billion -1.2%5.2%3.9 $711.24 7/15/20252,430,000 shares $1.74 billion +5.7%N/A3.9 $717.62 6/30/20252,300,000 shares $1.68 billion +21.7%5.0%3 $731.38 6/15/20251,890,000 shares $1.27 billion -3.6%4.1%2.2 $673.01 5/31/20251,960,000 shares $1.28 billion -20.0%4.2%2.2 $655.54 5/15/20252,450,000 shares $1.74 billion +21.3%5.2%2.5 $710.32 4/30/20252,020,000 shares $1.20 billion -23.2%N/A2 $593.10 4/15/20252,630,000 shares $1.43 billion +7.4%5.6%2.6 $544.25 3/31/20252,450,000 shares $1.42 billion +6.5%5.2%2.5 $579.98 3/15/20252,300,000 shares $1.39 billion -11.5%4.9%2.6 $606.06 Get the Latest News and Ratings for MPWR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Monolithic Power Systems and its competitors with MarketBeat's FREE daily newsletter. 2/28/20252,600,000 shares $1.59 billion -4.4%5.5%3 $611.01 2/15/20252,720,000 shares $1.86 billion -0.7%5.8%3 $684.93 1/31/20252,740,000 shares $1.75 billion +5.8%N/A2.6 $637.37 1/15/20252,590,000 shares $1.56 billion -9.1%N/A2.6 $602.41 12/31/20242,850,000 shares $1.69 billion +22.8%N/A3.1 $591.70 12/15/20242,320,000 shares $1.41 billion +11.0%N/A2.6 $608.44 11/30/20242,090,000 shares $1.19 billion -17.1%N/A2.5 $567.64 11/15/20242,520,000 shares $1.44 billion +69.1%N/A3.1 $573.38 10/31/20241,490,000 shares $1.13 billion +15.5%N/A2.3 $759.30 10/15/20241,290,000 shares $1.15 billion -17.3%N/A2.3 $894.69 9/30/20241,560,000 shares $1.44 billion +9.1%N/A2.7 $924.50 9/15/20241,430,000 shares $1.31 billion -7.1%N/A2.5 $914.10 8/31/20241,540,000 shares $1.44 billion +5.5%N/A2.7 $934.68 8/15/20241,460,000 shares $1.34 billion +10.6%N/A2.7 $920.69 7/31/20241,320,000 shares $1.14 billion -24.6%N/A2.5 $863.09 7/15/20241,750,000 shares $1.52 billion -1.7%N/A3.5 $870.91 6/30/20241,780,000 shares $1.46 billion +16.3%N/A3.7 $821.68 6/15/20241,530,000 shares $1.23 billion +9.3%N/A3.1 $806.57 5/31/20241,400,000 shares $1.03 billion +43.0%N/A2.8 $735.63 5/15/2024979,100 shares $725.85 million +12.6%N/A1.9 $741.34 4/30/2024869,300 shares $581.85 million -6.5%N/A1.5 $669.33 4/15/2024929,300 shares $600.91 million -13.2%N/A1.7 $646.63 3/31/20241,070,000 shares $724.84 million +10.8%N/A2 $677.42 3/15/2024965,700 shares $663.43 million +2.6%N/A1.8 $686.99 2/29/2024941,600 shares $677.99 million -0.7%N/A1.8 $720.04 2/15/2024948,000 shares $696.14 million -11.4%2.1%2 $734.32 1/31/20241,070,000 shares $644.91 million -5.3%2.3%2.3 $602.72 1/15/20241,130,000 shares $654.00 million -24.2%2.5%2.2 $578.76 12/31/20231,490,000 shares $939.86 million +1.4%3.3%2.9 $630.78 12/15/20231,470,000 shares $930.97 million +15.8%3.2%2.8 $633.31Get This Stock Now (Ad)This company is the lifeblood of AI data centers, yet almost no one has caught up with the story. Their hardware is so essential that the data center industry uses enough of it to stretch around the world 8 times – in a single building! So, if you own Nvidia stock now, you might be well-served to sell those shares and check out this under-the-radar play instead. Or if you missed the boat on Nvidia, this is a rare second chance to target tremendous profit potential as AI data centers spring up in every corner of the world.Get my full take on this exciting play right here… 11/30/20231,270,000 shares $696.87 million -1.6%2.8%2.4 $548.72 11/15/20231,290,000 shares $706.40 million +21.7%2.8%2.4 $547.60 10/31/20231,060,000 shares $468.24 million -21.5%2.3%1.9 $441.74 10/15/20231,350,000 shares $642.26 million -20.1%3.0%2.5 $475.75 9/30/20231,690,000 shares $780.78 million +24.3%3.7%3.2 $462.00 9/15/20231,360,000 shares $631.35 million -6.2%3.0%2.6 $464.23 8/31/20231,450,000 shares $755.75 million -4.0%3.2%2.7 $521.21 8/15/20231,510,000 shares $783.52 million -6.8%3.3%2.4 $518.89 7/31/20231,620,000 shares $906.37 million -19.8%3.6%2.5 $559.49 7/15/20232,020,000 shares $1.14 billion -2.4%4.5%3.2 $565.01 6/30/20232,070,000 shares $1.12 billion -8.8%4.6%3.5 $540.23 6/15/20232,270,000 shares $1.18 billion -18.6%5.1%3.8 $519.28 5/31/20232,790,000 shares $1.37 billion +35.4%6.2%4.7 $489.91 5/15/20232,060,000 shares $849.87 million -5.5%4.6%4.2 $412.56 4/30/20232,180,000 shares $1.01 billion -6.8%4.9%4.3 $461.97 4/15/20232,340,000 shares $1.12 billion -6.0%5.2%4.8 $477.27 3/31/20232,490,000 shares $1.25 billion -2.7%5.6%5 $500.54 3/15/20232,560,000 shares $1.22 billion -9.9%5.7%4.9 $476.61 2/28/20232,840,000 shares $1.38 billion +2.2%6.4%5.2 $484.29 2/15/20232,780,000 shares $1.47 billion -1.4%6.3%4.9 $530.09 1/31/20232,820,000 shares $1.20 billion +1.1%6.4%4.8 $426.56 1/15/20232,790,000 shares $1.11 billion -8.5%6.3%4.3 $398.46 12/30/20223,050,000 shares $1.08 billion -4.1%6.9%4.3 $353.61 12/15/20223,180,000 shares $1.19 billion +10.4%7.2%4.1 $373.30 11/30/20222,880,000 shares $1.10 billion +5.1%6.5%3.8 $381.96 11/15/20222,740,000 shares $1.11 billion +5.0%6.2%3.6 $405.03 10/31/20222,610,000 shares $885.96 million +13.5%5.9%3.6 $339.45 10/15/20222,300,000 shares $711.16 million +13.9%5.2%3.4 $309.20 9/30/20222,020,000 shares $734.07 million +46.4%4.6%3.3 $363.40 9/15/20221,380,000 shares $578.05 million +17.0%3.1%2.6 $418.88 8/31/20221,180,000 shares $534.75 million +5.4%2.7%2.4 $453.18 8/15/20221,120,000 shares $601.31 million +4.7%2.6%2.4 $536.88 7/31/20221,070,000 shares $497.25 million +23.9%2.4%2.2 $464.72 7/15/2022863,300 shares $354.17 million +0.2%2.0%1.8 $410.25 6/30/2022861,400 shares $330.81 million -1.5%2.0%1.8 $384.04 6/15/2022874,800 shares $364.08 million -5.2%2.2%1.8 $416.19 5/31/2022923,100 shares $415.76 million +2.3%2.1%1.9 $450.39 5/15/2022902,100 shares $389.41 million -7.3%2.1%1.8 $431.67 4/30/2022972,700 shares $381.53 million +7.5%2.2%1.9 $392.24 4/15/2022904,900 shares $370.45 million -17.0%2.1%1.8 $409.38 3/31/20221,090,000 shares $529.39 million +22.5%2.5%2.1 $485.68 3/15/2022889,600 shares $375.25 million +8.2%2.0%1.9 $421.82 2/28/2022821,900 shares $377.01 million +4.6%1.9%1.8 $458.70 2/15/2022786,100 shares $376.75 million +9.5%1.8%1.8 $479.27 1/31/2022717,800 shares $289.22 million -24.3%1.7%1.9 $402.93 1/15/2022948,200 shares $415.48 million -2.0%2.2%2.7 $438.18 12/31/2021967,800 shares $477.44 million +9.8%2.2%3.1 $493.33 12/15/2021881,400 shares $432.24 million +9.2%2.0%2.7 $490.40 11/30/2021806,900 shares $446.59 million -4.2%1.9%2.6 $553.46 11/15/2021842,600 shares $474.35 million -1.5%1.9%2.7 $562.96Get This Stock Now (Ad)This company is the lifeblood of AI data centers, yet almost no one has caught up with the story. Their hardware is so essential that the data center industry uses enough of it to stretch around the world 8 times – in a single building! So, if you own Nvidia stock now, you might be well-served to sell those shares and check out this under-the-radar play instead. Or if you missed the boat on Nvidia, this is a rare second chance to target tremendous profit potential as AI data centers spring up in every corner of the world.Get my full take on this exciting play right here… 10/29/2021855,700 shares $449.64 million +2.2%2.0%2.7 $525.46 10/15/2021837,400 shares $402.82 million +13.3%1.9%2.6 $481.04 9/30/2021739,000 shares $358.18 million -15.2%1.7%2.1 $484.68 9/15/2021871,900 shares $432.45 million -12.8%2.0%2.4 $495.99 8/31/20211,000,000 shares $494.93 million +6.9%2.3%2.9 $494.93 8/13/2021935,300 shares $434.77 million -12.6%2.2%2.8 $464.85 7/30/20211,070,000 shares $480.71 million +39.7%2.5%2.9 $449.26 7/15/2021765,700 shares $290.59 million +10.2%1.8%2.1 $379.51 6/30/2021695,000 shares $259.55 million +15.6%1.6%2.1 $373.45 6/15/2021601,400 shares $207.73 million -13.8%1.4%1.8 $345.41 5/28/2021697,700 shares $239.39 million +6.3%1.6%1.9 $343.12 5/14/2021656,300 shares $201.04 million +13.1%N/A1.6 $306.33 4/30/2021580,400 shares $215.39 million -9.8%N/A1 $371.11 4/15/2021643,200 shares $237.93 million -6.7%1.5%1.1 $369.92 3/31/2021689,600 shares $236.25 million +13.4%1.6%1.1 $342.59 3/15/2021607,900 shares $201.21 million -5.7%1.4%1 $331.00 2/26/2021644,500 shares $233.69 million -25.8%1.5%1 $362.59 2/12/2021868,000 shares $333.89 million +40.3%2.0%1.4 $384.67 1/29/2021618,500 shares $227.60 million -13.0%1.5%1.3 $367.98 1/15/2021710,800 shares $274.51 million -32.3%1.7%1.5 $386.20 12/31/20201,050,000 shares $378.77 million -2.8%2.5%2.2 $360.73 12/15/20201,080,000 shares $345.02 million +22.0%2.5%2.4 $319.46 11/30/2020885,200 shares $290.47 million -2.3%2.1%2.1 $328.14 11/15/2020906,300 shares $278.19 million -15.3%2.1%2.5 $306.95 10/30/20201,070,000 shares $340.93 million +2.9%2.5%3.3 $318.63 10/15/20201,040,000 shares $326.97 million +4.0%2.5%3.4 $314.39 9/30/20201,000,000 shares $279.61 million +3.2%2.4%3.3 $279.61 9/15/2020968,900 shares $250.63 million +0.5%2.3%3.1 $258.67 8/31/2020963,800 shares $257.46 million -5.5%2.3%3 $267.13 MPWR Short Interest - Frequently Asked Questions What is Monolithic Power Systems' current short interest? Short interest is the volume of Monolithic Power Systems shares that have been sold short but have not yet been closed out or covered. As of July 31st, traders have sold 2,400,000 shares of MPWR short. 5.19% of Monolithic Power Systems' shares are currently sold short. Learn More on Monolithic Power Systems' current short interest. What is a good short interest ratio for Monolithic Power Systems? 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. MPWR shares currently have a short interest ratio of 4.0. Learn More on Monolithic Power Systems's short interest ratio. Which institutional investors are shorting Monolithic Power Systems? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Monolithic Power Systems: Jane Street Group LLC, Squarepoint Ops LLC, Qube Research & Technologies Ltd, Maven Securities LTD, Walleye Capital LLC, Walleye Trading LLC, Twin Tree Management LP, Quaker Wealth Management LLC, and Jane Street Group LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Monolithic Power Systems? 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. 5.19% of Monolithic Power Systems' floating shares are currently sold short. Is Monolithic Power Systems' short interest increasing or decreasing? Monolithic Power Systems saw a drop in short interest in July. As of July 31st, there was short interest totaling 2,400,000 shares, a drop of 1.2% from the previous total of 2,430,000 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 Monolithic Power Systems' short interest compare to its competitors? 5.19% of Monolithic Power Systems' shares are currently sold short. Here is how the short interest of companies compare to Monolithic Power Systems: Applied Materials, Inc. (1.92%), Alphabet Inc. (0.54%), KLA Corporation (2.45%), Lam Research Corporation (2.26%), MKS Inc. (5.57%), MaxLinear, Inc (6.58%), NVIDIA Corporation (0.82%), NXP Semiconductors N.V. (2.94%), ON Semiconductor Corporation (7.89%), Arista Networks, Inc. (1.48%), 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), MicroStrategy Incorporated ($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 Monolithic Power Systems stock? Short selling MPWR is an investing strategy that aims to generate trading profit from Monolithic Power Systems as its price is falling. MPWR shares are trading down $12.99 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 Monolithic Power Systems? A short squeeze for Monolithic Power Systems 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 MPWR, which in turn drives the price of the stock up even further. How often is Monolithic Power Systems' 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 MPWR, twice per month. The most recent reporting period available is July, 31 2025. More Short Interest Resources from MarketBeat Related Companies Applied Materials Short Interest Data Alphabet Short Interest Data KLA Short Interest Data Lam Research Short Interest Data MKS Short Interest Data MaxLinear Short Interest Data NVIDIA Short Interest Data NXP Semiconductors Short Interest Data ON Semiconductor Short Interest Data Arista Networks 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:MPWR) was last updated on 8/15/2025 by MarketBeat.com Staff From Our PartnersTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger ...Porter & Company | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. 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You should see this presentation about Presi...InvestorPlace | SponsoredThe End of Elon Musk…?The End of Elon Musk? Don't make him laugh. Jeff Brown has been hearing this same tired story for years, an...Brownstone Research | 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 Monolithic Power Systems, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Monolithic Power Systems 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. 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