Vicor (VICR) Short Interest Ratio & Short Volume $47.32 +0.63 (+1.35%) Closing price 07/16/2025 04:00 PM EasternExtended Trading$47.34 +0.02 (+0.04%) As of 07/16/2025 06:33 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 InterestSustainabilityTrendsBuy This Stock Vicor Short Interest DataVicor (VICR) has a short interest of 40.57 million shares, representing 130.63% of the float (the number of shares available for trading by the public). This marks a 2,737.06% increase in short interest from the previous month. The short interest ratio (days to cover) is 6.3, indicating that it would take 6.3 days of the average trading volume of 243,645 shares to cover all short positions.Current Short Interest40,570,000 sharesPrevious Short Interest1,430,000 sharesChange Vs. Previous Month+2,737.06%Dollar Volume Sold Short$1.84 billionShort Interest Ratio6.3 Days to CoverLast Record DateJune 30, 2025Outstanding Shares45,210,000 sharesShort Percent of Float130.63%Today's Trading Volume191,568 sharesAverage Trading Volume243,645 sharesToday's Volume Vs. Average79% Short Selling Vicor? Sign up to receive the latest short interest report for Vicor and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartVICR Short Interest Over TimeVICR Days to Cover Over TimeVICR Percentage of Float Shorted Over Time Vicor Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 6/30/202540,570,000 shares $1.84 billion +2,737.1%130.6%6.3 $45.36 6/15/20251,430,000 shares $62.42 million -0.7%6.2%6 $43.65 5/31/20251,440,000 shares $62.78 million -4.6%6.2%5.7 $43.60 5/15/20251,510,000 shares $65.10 million -10.1%6.5%5.4 $43.11 4/30/20251,680,000 shares $67.03 million +0.6%7.3%5.6 $39.90 4/15/20251,670,000 shares $78.56 million -4.6%13.9%6 $47.04 3/31/20251,750,000 shares $81.87 million +1.7%14.6%6.1 $46.78 3/15/20251,720,000 shares $92.30 million +8.2%14.3%6.3 $53.66 2/28/20251,590,000 shares $100.69 million -5.4%13.2%5.9 $63.33 2/15/20251,680,000 shares $84.20 million +4.4%9.6%6.7 $50.12 Get the Latest News and Ratings for VICR and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Vicor and its competitors with MarketBeat's FREE daily newsletter. 1/31/20251,610,000 shares $82.34 million +11.8%7.0%6.7 $51.14 1/15/20251,440,000 shares $69.47 million +0.7%6.3%5.2 $48.24 12/31/20241,430,000 shares $69.10 million -17.3%6.2%5.5 $48.32 12/15/20241,730,000 shares $94.37 million +4.2%7.5%6.5 $54.55 11/30/20241,660,000 shares $88.33 million -6.2%7.2%6.7 $53.21 11/15/20241,770,000 shares $91.95 million +4.1%7.7%7.4 $51.95 10/31/20241,700,000 shares $77.71 million -4.0%7.4%8 $45.71 10/15/20241,770,000 shares $73.90 million -0.6%7.7%9 $41.75 9/30/20241,780,000 shares $74.94 million -3.3%7.8%9.6 $42.10 9/15/20241,840,000 shares $67.64 million -1.6%8.0%9.8 $36.76 8/31/20241,870,000 shares $72.00 million +0.5%8.2%9.8 $38.50 8/15/20241,860,000 shares $72.39 million +1.1%8.2%9.5 $38.92 7/31/20241,840,000 shares $77.48 million +8.9%8.1%9.2 $42.11 7/15/20241,690,000 shares $60.87 million +9.0%7.5%8.3 $36.02 6/30/20241,550,000 shares $51.40 million -2.5%6.9%8.3 $33.16 6/15/20241,590,000 shares $54.04 million +0.6%7.1%8.8 $33.99 5/31/20241,580,000 shares $55.28 million +1.3%7.1%8.4 $34.99 5/15/20241,560,000 shares $52.87 million +3.3%7.0%6.7 $33.89 4/30/20241,510,000 shares $48.89 million +2.7%6.6%5.6 $32.38 4/15/20241,470,000 shares $51.91 million -2.7%6.5%5.5 $35.31 3/31/20241,510,000 shares $57.74 million -7.4%6.6%5.6 $38.24 3/15/20241,630,000 shares $58.79 million -7.4%7.2%5.8 $36.07 2/29/20241,760,000 shares $65.54 million -2.2%7.7%6.2 $37.24 2/15/20241,800,000 shares $81.85 million -3.2%7.9%6 $45.47 1/31/20241,860,000 shares $70.07 million +3.9%8.2%6.7 $37.67 1/15/20241,790,000 shares $68.63 million +0.6%7.9%3.9 $38.34 12/31/20231,780,000 shares $79.99 million -7.3%7.8%3.7 $44.94 12/15/20231,920,000 shares $82.64 million -4.5%8.4%4.1 $43.04 11/30/20232,010,000 shares $73.51 million -2.4%8.9%4.2 $36.57 11/15/20232,060,000 shares $80.92 million -5.5%9.1%4.3 $39.28This Signal Only Flashes Once Every 4 Years – And It Just Triggered (Ad)This same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in crypto. Now it’s back, and the smart money is already positioning. A free training reveals the step-by-step strategy and altcoin picks designed to help you capitalize on the next wave.Missed the Last Crypto Boom? Don’t Miss This One - PLUS Claim your $10 in Bitcoin 10/31/20232,180,000 shares $84.45 million -34.5%9.7%4.6 $38.74 10/15/20233,330,000 shares $177.96 million -0.6%14.8%6.2 $53.44 9/30/20233,350,000 shares $197.28 million +3.7%14.8%7.4 $58.89 9/15/20233,230,000 shares $189.15 million -3.9%14.3%6.7 $58.56 8/31/20233,360,000 shares $227.71 million +15.5%14.9%6.7 $67.77 8/15/20232,910,000 shares $216.36 million +2.1%12.9%5.5 $74.35 7/31/20232,850,000 shares $262.97 million -9.8%12.7%5.6 $92.27 7/15/20233,160,000 shares $184.32 million -4.8%14.0%8.9 $58.33 6/30/20233,320,000 shares $179.28 million +18.6%14.7%10 $54.00 6/15/20232,800,000 shares $157.72 million +14.8%12.4%9 $56.33 5/31/20232,440,000 shares $135.05 million +3.8%10.9%8.1 $55.35 5/15/20232,350,000 shares $104.01 million +2.2%10.5%6.9 $44.26 4/30/20232,300,000 shares $98.83 million +4.1%10.2%6.6 $42.97 4/15/20232,210,000 shares $98.04 million -0.5%9.9%6.3 $44.36 3/31/20232,220,000 shares $104.21 million +15.0%9.9%6.3 $46.94 3/15/20231,930,000 shares $81.43 million +17.7%8.6%5.6 $42.19 2/28/20231,640,000 shares $77.08 million +14.7%7.3%5 $47.00 2/15/20231,430,000 shares $92.81 million +1.4%6.4%5.3 $64.90 1/31/20231,410,000 shares $97.90 million -4.7%6.3%6.4 $69.43 1/15/20231,480,000 shares $89.18 million +11.3%6.6%5.7 $60.26 12/30/20221,330,000 shares $71.49 million +3.1%6.0%5 $53.75 12/15/20221,290,000 shares $68.52 million +6.6%5.8%5 $53.12 11/30/20221,210,000 shares $65.33 million -3.2%5.4%4.9 $53.99 11/15/20221,250,000 shares $70.53 million -12.6%5.6%5.1 $56.42 10/31/20221,430,000 shares $68.31 million +2.1%6.4%5.8 $47.77 10/15/20221,400,000 shares $66.29 million +4.5%6.3%6.3 $47.35 9/30/20221,340,000 shares $79.25 million -1.5%6.0%5.5 $59.14 9/15/20221,360,000 shares $87.61 million +3.0%6.1%5.6 $64.42 8/31/20221,320,000 shares $93.90 million -0.8%5.9%5.2 $71.14 8/15/20221,330,000 shares $107.69 million -3.6%6.0%5.1 $80.97 7/31/20221,380,000 shares $100.68 million +0.7%6.2%5.2 $72.96 7/15/20221,370,000 shares $72.42 million -2.1%6.2%4.7 $52.86 6/30/20221,400,000 shares $76.62 million -1.4%6.3%5.3 $54.73 6/15/20221,420,000 shares $82.49 million +4.4%6.4%4.4 $58.09 5/31/20221,360,000 shares $91.53 million -4.9%6.1%3.7 $67.30 5/15/20221,430,000 shares $86.01 million +1.4%6.4%3.4 $60.15 4/30/20221,410,000 shares $85.33 million +1.4%6.4%3.4 $60.52 4/15/20221,390,000 shares $83.98 million +19.8%6.3%3.4 $60.42 3/31/20221,160,000 shares $81.84 million -3.3%5.2%3 $70.55 3/15/20221,200,000 shares $84.89 million +13.2%5.4%3.6 $70.74 2/28/20221,060,000 shares $79.26 million -7.8%4.8%2.8 $74.77 2/15/20221,150,000 shares $123.66 million +8.5%5.2%3.4 $107.53 1/31/20221,060,000 shares $99.99 million +37.8%4.8%3.4 $94.33 1/15/2022769,400 shares $83.53 million +7.4%3.5%2.6 $108.57 12/31/2021716,500 shares $90.98 million -26.8%3.3%2.7 $126.98 12/15/2021979,200 shares $117.92 million +16.6%4.4%3.6 $120.42 11/30/2021839,600 shares $120.45 million -15.9%3.8%4.9 $143.46 11/15/2021997,700 shares $161.41 million -11.7%4.5%6.6 $161.78 10/29/20211,130,000 shares $171.30 million +10.8%5.2%8.4 $151.59 10/15/20211,020,000 shares $151.17 million No Change4.7%7.8 $148.21This Signal Only Flashes Once Every 4 Years – And It Just Triggered (Ad)This same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in crypto. Now it’s back, and the smart money is already positioning. A free training reveals the step-by-step strategy and altcoin picks designed to help you capitalize on the next wave.Missed the Last Crypto Boom? Don’t Miss This One - PLUS Claim your $10 in Bitcoin 9/30/20211,020,000 shares $136.84 million +12.1%4.7%8.3 $134.16 9/15/2021909,900 shares $116.11 million +1.0%4.2%7.6 $127.61 8/31/2021900,600 shares $111.11 million -1.3%4.2%8 $123.37 8/13/2021912,700 shares $108.04 million +6.0%4.2%8.1 $118.37 7/30/2021861,300 shares $99.57 million +3.5%4.0%7 $115.61 7/15/2021831,900 shares $88.52 million +2.6%3.9%6.6 $106.41 6/30/2021810,500 shares $85.70 million +5.8%3.8%6.6 $105.74 6/15/2021766,100 shares $71.35 million -1.6%3.6%6.5 $93.13 5/28/2021778,800 shares $70.15 million +0.7%3.6%6.1 $90.08 5/14/2021773,600 shares $58.59 million +7.3%3.6%5.6 $75.74 4/30/2021720,800 shares $67.58 million -1.2%3.4%5.2 $93.75 4/15/2021729,500 shares $61.66 million +2.6%3.4%5.4 $84.53 3/31/2021710,900 shares $59.47 million -5.8%3.4%5.3 $83.65 3/15/2021754,400 shares $74.35 million +9.8%3.6%5.4 $98.55 2/26/2021687,400 shares $61.92 million -2.3%3.2%5.2 $90.08 2/12/2021703,300 shares $71.01 million +0.7%3.3%5.8 $100.97 1/29/2021698,200 shares $62.57 million -2.3%3.3%5.5 $89.61 1/15/2021714,700 shares $72.47 million -7.2%3.4%5.4 $101.40 12/31/2020769,900 shares $70.95 million +0.0%3.6%5.8 $92.16 12/15/2020769,600 shares $65.21 million +4.7%3.6%6 $84.73 11/30/2020735,000 shares $60.53 million 0.0%3.5%4.9 $82.35 10/30/2020732,100 shares $58.26 million -10.3%3.5%4.3 $79.58 10/15/2020816,300 shares $69.62 million -5.7%3.9%4.3 $85.29 9/30/2020865,400 shares $67.27 million -3.9%4.1%4 $77.73 9/15/2020900,200 shares $75.15 million +7.3%4.3%3.9 $83.48 8/31/2020838,900 shares $73.01 million +3.0%4.0%3.3 $87.03 8/14/2020814,500 shares $66.44 million -10.9%4.1%3.1 $81.57 7/31/2020913,900 shares $74.46 million -8.6%4.6%3.4 $81.47 VICR Short Interest - Frequently Asked Questions What is Vicor's current short interest? Short interest is the volume of Vicor shares that have been sold short but have not yet been closed out or covered. As of June 30th, traders have sold 40,570,000 shares of VICR short. 130.63% of Vicor's shares are currently sold short. Learn More on Vicor's current short interest. What is a good short interest ratio for Vicor? 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. VICR shares currently have a short interest ratio of 6.0. Learn More on Vicor's short interest ratio. Which institutional investors are shorting Vicor? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Vicor: Jane Street Group LLC, Walleye Trading LLC, Walleye Capital LLC, and Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. What is a good short interest percentage for Vicor? 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. 130.63% of Vicor's floating shares are currently sold short. Is Vicor's short interest increasing or decreasing? Vicor saw a increase in short interest in the month of June. As of June 30th, there was short interest totaling 40,570,000 shares, an increase of 2,737.1% from the previous total of 1,430,000 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 Vicor's short interest compare to its competitors? 130.63% of Vicor's shares are currently sold short. Here is how the short interest of companies compare to Vicor: Enphase Energy, Inc. (20.97%), Belden Inc (1.96%), Franklin Electric Co., Inc. (2.08%), Enersys (2.63%), Brady Corporation (0.72%), Powell Industries, Inc. (19.30%), American Superconductor Corporation (9.01%), Thermon Group Holdings, Inc. (1.02%), Preformed Line Products Company (3.17%), LSI Industries Inc. (1.93%), 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 ($72.10 billion), Invesco QQQ ($26.89 billion), iShares Russell 2000 ETF ($19.61 billion), MicroStrategy Incorporated ($9.52 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), WD-40 Company ($7.66 billion), Technology Select Sector SPDR Fund ($6.10 billion), Invesco S&P 500 Equal Weight ETF ($5.80 billion), Invesco S&P 500 Top 50 ETF ($5.53 billion), and Vanguard Large-Cap ETF ($5.35 billion). View all of the most shorted stocks. What does it mean to sell short Vicor stock? Short selling VICR is an investing strategy that aims to generate trading profit from Vicor as its price is falling. VICR shares are trading up $0.63 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 Vicor? A short squeeze for Vicor 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 VICR, which in turn drives the price of the stock up even further. How often is Vicor'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 VICR, twice per month. The most recent reporting period available is June, 30 2025. More Short Interest Resources from MarketBeat Related Companies ENPH Short Interest BDC Short Interest FELE Short Interest ENS Short Interest BRC Short Interest POWL Short Interest AMSC Short Interest THR Short Interest PLPC Short Interest LYTS Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:VICR) was last updated on 7/17/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredMarket 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 | SponsoredThis Signal Only Flashes Once Every 4 Years – And It Just TriggeredThis same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...Crypto Swap Profits | SponsoredPresidential Bombshell: $150T Resource to Be Released as soon as this Summer?Something extraordinary is happening in Washington. 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