Mercury Systems (MRCY) Short Interest Ratio & Short Volume $51.90 -0.36 (-0.69%) As of 01:03 PM Eastern Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Mercury Systems Short Interest DataMercury Systems (MRCY) has a short interest of 4.83 million shares, representing 8.22% of the float (the number of shares available for trading by the public). This marks a 14.18% increase in short interest from the previous month. The short interest ratio (days to cover) is 8.5, indicating that it would take 8.5 days of the average trading volume of 542,594 shares to cover all short positions.Current Short Interest4,830,000 sharesPrevious Short Interest4,230,000 sharesChange Vs. Previous Month+14.18%Dollar Volume Sold Short$235.08 millionShort Interest Ratio8.5 Days to CoverLast Record DateMay 31, 2025Outstanding Shares59,755,000 sharesShort Percent of Float8.22%Today's Trading Volume206,746 sharesAverage Trading Volume542,594 sharesToday's Volume Vs. Average38% Short Selling Mercury Systems? Sign up to receive the latest short interest report for Mercury 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 ChartMRCY Short Interest Over TimeMRCY Days to Cover Over TimeMRCY Percentage of Float Shorted Over Time Mercury 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 5/31/20254,830,000 shares $235.08 million +14.2%8.2%8.5 $48.67 5/15/20254,230,000 shares $194.03 million +8.5%7.2%7.7 $45.87 4/30/20253,900,000 shares $195 million -2.0%N/A7 $50.00 4/15/20253,980,000 shares $191.16 million -1.0%6.8%6.9 $48.03 3/31/20254,020,000 shares $173.22 million +3.1%6.8%7.3 $43.09 3/15/20253,900,000 shares $181.43 million +1.8%6.6%7.4 $46.52 2/28/20253,830,000 shares $170.09 million -0.8%6.5%7.1 $44.41 2/15/20253,860,000 shares $171.58 million -6.5%6.6%7.4 $44.45 1/31/20254,130,000 shares $172.18 million -5.3%N/A7.6 $41.69 1/15/20254,360,000 shares $188.70 million +1.2%N/A9.2 $43.28 Get the Latest News and Ratings for MRCY and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Mercury Systems and its competitors with MarketBeat's FREE daily newsletter. 12/31/20244,310,000 shares $181.02 million -4.7%N/A8.9 $42.00 12/15/20244,520,000 shares $171.17 million +3.0%N/A9.6 $37.87 11/30/20244,390,000 shares $180.56 million +1.4%N/A9.6 $41.13 11/15/20244,330,000 shares $170.26 million -1.6%N/A10 $39.32 10/31/20244,400,000 shares $142.34 million -5.4%N/A7.5 $32.35 10/15/20244,650,000 shares $167.35 million -4.5%N/A8 $35.99 9/30/20244,870,000 shares $180.19 million -7.6%N/A8 $37.00 9/15/20245,270,000 shares $200.37 million -3.0%N/A6.8 $38.02 8/31/20245,430,000 shares $205.80 million -5.4%N/A6.9 $37.90 8/15/20245,740,000 shares $230.29 million +4.7%N/A7.3 $40.12 7/31/20245,480,000 shares $194.81 million +9.0%N/A8.1 $35.55 7/15/20245,030,000 shares $163.02 million +8.9%N/A7.6 $32.41 6/30/20244,620,000 shares $124.69 million +0.7%N/A7.6 $26.99 6/15/20244,590,000 shares $131.69 million -2.1%N/A10 $28.69 5/31/20244,690,000 shares $145.16 million +6.8%N/A10.9 $30.95 5/15/20244,390,000 shares $130.43 million +2.8%N/A9.7 $29.71 4/30/20244,270,000 shares $120.41 million +3.9%N/A7.6 $28.20 4/15/20244,110,000 shares $116.72 million +9.6%N/A7.7 $28.40 3/31/20243,750,000 shares $110.63 million -0.5%N/A6.6 $29.50 3/15/20243,770,000 shares $108.39 million +1.9%N/A6.6 $28.75 2/29/20243,700,000 shares $110.52 million -0.5%N/A6.4 $29.87 2/15/20243,720,000 shares $113.24 million +8.8%N/A6.8 $30.44 1/31/20243,420,000 shares $101.44 million -0.6%N/A6.7 $29.66 1/15/20243,440,000 shares $111.18 million -0.3%N/A7.8 $32.32 12/31/20233,450,000 shares $126.17 million -5.7%N/A8.3 $36.57 12/15/20233,660,000 shares $137.10 million +6.4%N/A8.6 $37.46 11/30/20233,440,000 shares $117.96 million -6.3%N/A7.3 $34.29 11/15/20233,670,000 shares $127.64 million +16.9%N/A7.3 $34.78 10/31/20233,140,000 shares $112.98 million +2.6%N/A4 $35.98 10/15/20233,060,000 shares $118.21 million +6.3%N/A4 $38.63New Rule Hits in July — The Smart Money Already Moved (Ad)A little-known regulation quietly goes into effect this July. 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We're talking about something they don't want you to notice — because the fewer people who act on this, the better it is for them.To help you get started, we're giving away a FREE Wealth Protection Guide that shows you exactly how 9/30/20232,880,000 shares $106.82 million -2.0%N/A3.7 $37.09 9/15/20232,940,000 shares $111.51 million +5.4%N/A3.2 $37.93 8/31/20232,790,000 shares $109.51 million +10.7%5.0%3.1 $39.25 8/15/20232,520,000 shares $85.28 million +10.5%N/A3 $33.84 7/31/20232,280,000 shares $86.59 million No ChangeN/A4.3 $37.98 7/15/20232,280,000 shares $78.39 million +2.7%N/A4 $34.38 6/30/20232,220,000 shares $76.79 million +0.9%N/A3.9 $34.59 6/15/20232,200,000 shares $87.34 million -7.2%N/A4.6 $39.70 5/31/20232,370,000 shares $96.20 million +0.9%N/A7.6 $40.59 5/15/20232,350,000 shares $98.58 million +5.9%N/A7.3 $41.95 4/30/20232,220,000 shares $105.83 million -3.9%N/A6.8 $47.67 4/15/20232,310,000 shares $115.25 million +4.1%N/A7.3 $49.89 3/31/20232,220,000 shares $113.49 million +6.2%N/A7.1 $51.12 3/15/20232,090,000 shares $101.16 million -2.8%N/A6.5 $48.40 2/28/20232,150,000 shares $112.53 million -0.9%N/A5.8 $52.34 2/15/20232,170,000 shares $118.68 million -13.2%N/A5.9 $54.69 1/31/20232,500,000 shares $124.96 million +0.4%N/A6.8 $49.99 1/15/20232,490,000 shares $117.85 million -2.7%N/A7.5 $47.33 12/30/20222,560,000 shares $114.53 million +1.6%N/A7.3 $44.74 12/15/20222,520,000 shares $119.62 million +15.6%N/A7 $47.47 11/30/20222,180,000 shares $110.79 million No ChangeN/A6.6 $50.82 11/15/20222,180,000 shares $109.24 million +8.5%N/A6.9 $50.11 10/31/20222,010,000 shares $97.28 million +2.6%3.6%6.1 $48.40 10/15/20221,960,000 shares $81.89 million -14.0%3.5%5 $41.78 9/30/20222,280,000 shares $92.57 million +12.9%4.1%6 $40.60 9/15/20222,020,000 shares $95.32 million +3.1%3.6%5 $47.19 8/31/20221,960,000 shares $94.33 million +4.3%3.5%4.9 $48.13 8/15/20221,880,000 shares $96.71 million -2.6%3.4%4.4 $51.44 7/31/20221,930,000 shares $113.89 million +14.2%3.5%4.3 $59.01 7/15/20221,690,000 shares $107.59 million -11.1%3.0%4.2 $63.66 6/30/20221,900,000 shares $122.23 million -8.2%3.4%4.7 $64.33 6/15/20222,070,000 shares $122.34 million -18.2%3.7%5.1 $59.10 5/31/20222,530,000 shares $151.32 million -23.6%4.5%5.7 $59.81 5/15/20223,310,000 shares $196.05 million -4.3%5.9%6 $59.23 4/30/20223,460,000 shares $193.03 million -2.5%6.3%6.4 $55.79 4/15/20223,550,000 shares $217.37 million -3.0%6.5%5.9 $61.23 3/31/20223,660,000 shares $235.89 million -5.9%6.7%5.6 $64.45 3/15/20223,890,000 shares $253.32 million -1.5%7.1%5.1 $65.12 2/28/20223,950,000 shares $237.87 million +9.1%7.2%4.8 $60.22 2/15/20223,620,000 shares $191.79 million +14.6%6.5%4.8 $52.98 1/31/20223,160,000 shares $179.87 million +1.0%5.7%4.1 $56.92 1/15/20223,130,000 shares $187.74 million +5.4%5.7%4.3 $59.98 12/31/20212,970,000 shares $163.53 million +10.8%5.4%4.4 $55.06 12/15/20212,680,000 shares $135.88 million +4.7%4.8%4.1 $50.70 11/30/20212,560,000 shares $125.31 million +13.8%4.6%4.7 $48.95 11/15/20212,250,000 shares $117.05 million -19.9%4.1%4.8 $52.02 10/29/20212,810,000 shares $144.83 million +14.2%5.1%5.9 $51.54 10/15/20212,460,000 shares $123.22 million +69.7%4.4%4.7 $50.09 9/30/20211,450,000 shares $68.76 million +0.7%2.6%3 $47.42 9/15/20211,440,000 shares $66.57 million -2.7%2.6%3.1 $46.23Trump’s Exec Order #14154 could be a “Millionaire-Maker” (Ad)Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans a chance at true financial independence in the months ahead.” We recently sat down with Rickards to capture all the key details on tape. For the moment, you can watch this interview free of charge – just click here. 8/31/20211,480,000 shares $74.56 million +37.0%2.7%3.5 $50.38 8/13/20211,080,000 shares $57.38 million +3.9%2.0%2.6 $53.13 7/30/20211,040,000 shares $68.64 million -2.8%1.9%2.6 $66.00 7/15/20211,070,000 shares $69.91 million -8.6%1.9%2.5 $65.34 6/30/20211,170,000 shares $77.55 million -1.7%2.1%2.6 $66.28 6/15/20211,190,000 shares $78.31 million +3.5%2.2%2.6 $65.81 5/28/20211,150,000 shares $75.27 million -5.7%2.1%2.4 $65.45 5/14/20211,220,000 shares $78.91 million +13.0%2.2%2.4 $64.68 4/30/20211,080,000 shares $82.70 million -4.4%2.0%2.2 $76.57 4/15/20211,130,000 shares $87.77 million +11.9%2.1%2.6 $77.67 3/31/20211,010,000 shares $69.54 million +1.4%1.8%2.1 $68.85 3/15/2021996,200 shares $66.00 million +38.0%1.8%2.2 $66.25 2/26/2021721,800 shares $47.33 million -17.8%1.3%1.7 $65.57 2/12/2021878,500 shares $65.79 million +7.4%1.6%2.2 $74.89 1/29/2021817,900 shares $60.12 million -3.5%1.5%2 $73.51 1/15/2021847,100 shares $67.92 million -9.7%1.5%2.5 $80.18 12/31/2020937,800 shares $82.23 million -5.8%1.7%3.1 $87.68 12/15/2020995,900 shares $79.77 million +24.0%1.8%3.4 $80.10 11/30/2020803,500 shares $56.94 million -11.2%1.5%2.6 $70.86 11/15/2020904,300 shares $62.46 million -15.5%1.7%3.1 $69.07 10/30/20201,070,000 shares $76.00 million -1.8%2.0%3.8 $71.03 10/15/20201,090,000 shares $84.16 million -14.2%2.0%3.8 $77.21 9/30/20201,270,000 shares $98.37 million +0.8%2.3%4.1 $77.46 9/15/20201,260,000 shares $85.25 million -6.0%2.3%2.9 $67.66 8/31/20201,340,000 shares $101.49 million +1.5%2.4%2.8 $75.74 8/14/20201,320,000 shares $105.44 million -0.8%2.4%2.6 $79.88 7/31/20201,330,000 shares $102.98 million -7.0%2.4%2.6 $77.43 7/15/20201,430,000 shares $103.47 million -7.7%2.6%2.7 $72.36 6/30/20201,550,000 shares $121.92 million -20.5%2.8%3 $78.66 6/15/20201,950,000 shares $155.10 million +1.0%3.6%4.7 $79.54 MRCY Short Interest - Frequently Asked Questions What is Mercury Systems' current short interest? Short interest is the volume of Mercury Systems shares that have been sold short but have not yet been covered or closed out. As of May 31st, traders have sold 4,830,000 shares of MRCY short. 8.22% of Mercury Systems' shares are currently sold short. Learn More on Mercury Systems' current short interest. What is a good short interest ratio for Mercury 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. MRCY shares currently have a short interest ratio of 8.0. Learn More on Mercury Systems's short interest ratio. Which institutional investors are shorting Mercury Systems? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Mercury Systems: Quaker Wealth Management LLC, and PEAK6 LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Mercury 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. 8.22% of Mercury Systems' floating shares are currently sold short. Is Mercury Systems' short interest increasing or decreasing? Mercury Systems saw a increase in short interest in May. As of May 31st, there was short interest totaling 4,830,000 shares, an increase of 14.2% from the previous total of 4,230,000 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 Mercury Systems' short interest compare to its competitors? 8.22% of Mercury Systems' shares are currently sold short. Here is how the short interest of companies compare to Mercury Systems: Fabrinet (5.83%), Sanmina Co. (3.39%), Plexus Corp. (2.01%), TTM Technologies, Inc. (2.87%), IPG Photonics Co. (9.33%), Benchmark Electronics, Inc. (3.99%), CTS Co. (1.60%), Methode Electronics, Inc. (3.17%), Park Aerospace Corp. (1.42%), Neonode Inc. (6.56%), 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 Mercury Systems stock? Short selling MRCY is an investing strategy that aims to generate trading profit from Mercury Systems as its price is falling. MRCY shares are trading down $0.42 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 Mercury Systems? A short squeeze for Mercury 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 MRCY, which in turn drives the price of the stock up even further. How often is Mercury 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 MRCY, twice per month. The most recent reporting period available is May, 31 2025. More Short Interest Resources from MarketBeat Related Companies Fabrinet Short Interest Data Sanmina Short Interest Data Plexus Short Interest Data TTM Technologies Short Interest Data IPG Photonics Short Interest Data Benchmark Electronics Short Interest Data CTS Short Interest Data Methode Electronics Short Interest Data Park Aerospace Short Interest Data Neonode 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:MRCY) was last updated on 6/12/2025 by MarketBeat.com Staff From Our PartnersTrump’s Exec Order #14154 could be a “Millionaire-Maker”Former Presidential Advisor, Jim Rickards, says Trump could “rewire our economy and hand millions of Americans...Paradigm Press | SponsoredTrump wipes out trillions overnight…Is there anybody more powerful than Donald Trump right now? 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