Impinj (PI) Short Interest Ratio & Short Volume $117.52 -5.81 (-4.71%) Closing price 04:00 PM EasternExtended Trading$118.28 +0.77 (+0.65%) As of 06:20 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 Impinj Short Interest DataImpinj (PI) has a short interest of 3.22 million shares. This marks a -0.92% decrease in short interest from the previous month. The short interest ratio (days to cover) is 4.2, indicating that it would take 4.2 days of the average trading volume of 592,954 shares to cover all short positions.Current Short Interest3,220,000 sharesPrevious Short Interest3,250,000 sharesChange Vs. Previous Month-0.92%Dollar Volume Sold Short$296.66 millionShort Interest Ratio4.2 Days to CoverLast Record DateApril 30, 2025Outstanding Shares28,983,000 sharesPercentage of Shares Shorted11.11%Today's Trading Volume575,556 sharesAverage Trading Volume592,954 sharesToday's Volume Vs. Average97% Short Selling Impinj? Sign up to receive the latest short interest report for Impinj and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPI Short Interest Over TimePI Days to Cover Over TimePI Percentage of Float Shorted Over Time Impinj Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 4/30/20253,220,000 shares $296.66 million -0.9%N/A4.2 $92.13 4/15/20253,250,000 shares $215.74 million -10.5%23.2%4.2 $66.38 3/31/20253,630,000 shares $329.24 million +0.8%26.0%5 $90.70 3/15/20253,600,000 shares $325.22 million +2.3%25.7%5.5 $90.34 2/28/20253,520,000 shares $340.24 million -1.7%25.2%5.1 $96.66 2/15/20253,580,000 shares $371.68 million -20.3%25.6%5.5 $103.82 1/31/20254,490,000 shares $569.74 million +6.2%N/A6.7 $126.89 1/15/20254,230,000 shares $577.48 million +1.0%N/A6.9 $136.52 12/31/20244,190,000 shares $608.64 million +10.9%N/A7.7 $145.26 12/15/20243,780,000 shares $570.70 million +13.9%N/A6.9 $150.98 Get the Latest News and Ratings for PI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Impinj and its competitors with MarketBeat's FREE daily newsletter. 11/30/20243,320,000 shares $638.14 million +3.1%N/A5.5 $192.21 11/15/20243,220,000 shares $568.36 million +2.6%N/A5.6 $176.51 10/31/20243,140,000 shares $596.57 million -19.5%N/A5.8 $189.99 10/15/20243,900,000 shares $909.68 million +2.1%N/A7.2 $233.25 9/30/20243,820,000 shares $827.11 million +24.4%N/A7.3 $216.52 9/15/20243,070,000 shares $570.77 million +12.0%N/A6.2 $185.92 8/31/20242,740,000 shares $460.59 million -2.8%N/A6.8 $168.10 8/15/20242,820,000 shares $458.48 million +5.6%N/A6.7 $162.58 7/31/20242,670,000 shares $425.30 million +1.5%N/A5.7 $159.29 7/15/20242,630,000 shares $463.17 million -11.2%N/A5.2 $176.11 6/30/20242,960,000 shares $464.04 million -2.0%N/A6.5 $156.77 6/15/20243,020,000 shares $453 million -3.2%N/A6.7 $150.00 5/31/20243,120,000 shares $510.65 million -4.9%N/A6.8 $163.67 5/15/20243,280,000 shares $573.57 million -6.8%N/A7.6 $174.87 4/30/20243,520,000 shares $561.02 million +6.7%N/A7.7 $159.38 4/15/20243,300,000 shares $391.05 million -0.9%N/A9 $118.50 3/31/20243,330,000 shares $427.61 million +2.2%N/A8.6 $128.41 3/15/20243,260,000 shares $400.65 million -0.3%N/A8.3 $122.90 2/29/20243,270,000 shares $357.15 million +0.6%N/A8.1 $109.22 2/15/20243,250,000 shares $346.91 million -14.5%N/A8.1 $106.74 1/31/20243,800,000 shares $368.52 million -0.3%N/A9.6 $96.98 1/15/20243,810,000 shares $304.04 million -0.3%N/A8.3 $79.80 12/31/20233,820,000 shares $343.91 million -5.7%N/A8.7 $90.03 12/15/20234,050,000 shares $360.13 million +1.0%N/A8.9 $88.92 11/30/20234,010,000 shares $335.20 million +2.6%N/A8.4 $83.59 11/15/20233,910,000 shares $308.93 million +2.6%N/A7.4 $79.01 10/31/20233,810,000 shares $246.16 million +20.6%N/A6.7 $64.61 10/15/20233,160,000 shares $166.50 million -0.9%N/A4.9 $52.69 9/30/20233,190,000 shares $175.55 million +4.3%N/A5 $55.03 9/15/20233,060,000 shares $195.56 million +9.3%N/A4.7 $63.91URGENT: Someone's Moving Gold Out of London... 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Go here to learn about my Top Four picks for the coming bull mania. 8/31/20232,800,000 shares $186.40 million -1.8%N/A4 $66.57 8/15/20232,850,000 shares $174.68 million -10.4%N/A4.3 $61.29 7/31/20233,180,000 shares $211.85 million -3.9%N/A5 $66.62 7/15/20233,310,000 shares $286.32 million -8.1%N/A4.9 $86.50 6/30/20233,600,000 shares $322.74 million +4.7%N/A5.3 $89.65 6/15/20233,440,000 shares $333.51 million -7.0%N/A5.2 $96.95 5/31/20233,700,000 shares $378.66 million +20.5%N/A6.4 $102.34 5/15/20233,070,000 shares $290.88 million -11.3%N/A5.3 $94.75 4/30/20233,460,000 shares $305.90 million +4.2%N/A5.7 $88.41 4/15/20233,320,000 shares $456.37 million -7.3%N/A7.3 $137.46 3/31/20233,580,000 shares $485.16 million -0.6%N/A7.8 $135.52 3/15/20233,600,000 shares $453.82 million +11.8%N/A7.9 $126.06 2/28/20233,220,000 shares $427.04 million +5.9%N/A7 $132.62 2/15/20233,040,000 shares $406.45 million +4.8%N/A6.4 $133.70 1/31/20232,900,000 shares $376.36 million +23.4%N/A6 $129.78 1/15/20232,350,000 shares $289.54 million +3.5%N/A4.8 $123.21 12/30/20222,270,000 shares $247.84 million +8.6%N/A5.1 $109.18 12/15/20222,090,000 shares $228.17 million +10.6%N/A4.9 $109.17 11/30/20221,890,000 shares $241.07 million -9.1%N/A4.4 $127.55 11/15/20222,080,000 shares $238.49 million -4.2%N/A5.1 $114.66 10/31/20222,170,000 shares $248.75 million -2.7%N/A5.8 $114.63 10/15/20222,230,000 shares $169.17 million +0.9%N/A6.5 $75.86 9/30/20222,210,000 shares $176.87 million +7.8%N/A6.6 $80.03 9/15/20222,050,000 shares $189.63 million +7.3%N/A5.8 $92.50 8/31/20221,910,000 shares $170.52 million -7.3%N/A5.6 $89.28 8/15/20222,060,000 shares $200.27 million +1.0%N/A6.2 $97.22 7/31/20222,040,000 shares $173.44 million -13.9%N/A6.2 $85.02 7/15/20222,370,000 shares $159.98 million -15.4%N/A7.7 $67.50 6/30/20222,800,000 shares $164.28 million -1.8%N/A8.9 $58.67 6/15/20222,850,000 shares $143.36 million -13.9%N/A8.9 $50.30 5/31/20223,310,000 shares $154.94 million -5.4%N/A10.8 $46.81 5/15/20223,500,000 shares $164.89 million +70.7%N/A11.2 $47.11 4/30/20222,050,000 shares $100.98 million +6.8%N/A6.2 $49.26 4/15/20221,920,000 shares $97.67 million +7.3%8.2%5.9 $50.87 3/31/20221,790,000 shares $113.74 million -4.3%7.6%5.3 $63.54 3/15/20221,870,000 shares $108.48 million -13.8%7.9%5.7 $58.01 2/28/20222,170,000 shares $149.19 million +19.2%9.2%5.8 $68.75 2/15/20221,820,000 shares $131.75 million +6.4%7.7%5 $72.39 1/31/20221,710,000 shares $135.76 million -3.9%7.4%4.6 $79.39 1/15/20221,780,000 shares $161.30 million -1.7%7.7%4.4 $90.62 12/31/20211,810,000 shares $160.55 million +4.6%7.8%4.9 $88.70 12/15/20211,730,000 shares $152.91 million +33.1%7.4%4.9 $88.39 11/30/20211,300,000 shares $97.46 million +3.2%5.6%4.1 $74.97 11/15/20211,260,000 shares $100.22 million -21.7%5.4%4.3 $79.54 10/29/20211,610,000 shares $112.25 million -5.3%6.9%6.7 $69.72 10/15/20211,700,000 shares $89.40 million -15.4%7.4%9.1 $52.59 9/30/20212,010,000 shares $114.83 million +1.0%8.7%10.8 $57.13 9/15/20211,990,000 shares $108.24 million -3.4%8.6%10.4 $54.39 8/31/20212,060,000 shares $120.08 million +1.5%8.9%11.3 $58.29 8/13/20212,030,000 shares $101.50 million +1.5%8.8%11.7 $50.00Trump wipes out trillions overnight… (Ad)Is there anybody more powerful than Donald Trump right now? In a single tariff announcement, he wiped out nearly $5 trillion in wealth from the S&P 500 and $6.4 trillion from the Dow Jones… Not to mention the countless trillions of dollars lost in every market around the world… leaving the major political powers scrambling in fear of Trump’s next move.Whether you take some of that wealth for yourself depends on if you watch this controversial exposé 7/30/20212,000,000 shares $92 million +2.6%8.7%10.7 $46.00 7/15/20211,950,000 shares $85.02 million +2.1%8.5%9.4 $43.60 6/30/20211,910,000 shares $98.54 million -6.8%8.4%9.1 $51.59 6/15/20212,050,000 shares $102.79 million -7.2%9.4%9.8 $50.14 5/28/20212,210,000 shares $115.03 million -15.3%10.2%10.4 $52.05 5/14/20212,610,000 shares $115.78 million +7.9%N/A11 $44.36 4/30/20212,420,000 shares $113.28 million -4.0%11.2%8.3 $46.81 4/15/20212,520,000 shares $138.47 million -11.6%12.0%8.3 $54.95 3/31/20212,850,000 shares $155.10 million -2.4%13.6%8.3 $54.42 3/15/20212,920,000 shares $174.41 million +1.7%13.9%8 $59.73 2/26/20212,870,000 shares $179.06 million -0.4%13.7%7.9 $62.39 2/12/20212,880,000 shares $201.14 million +19.5%13.7%7.8 $69.84 1/29/20212,410,000 shares $137.30 million -10.1%11.7%7.2 $56.97 1/15/20212,680,000 shares $152.17 million -3.3%13.0%8.7 $56.78 12/31/20202,770,000 shares $115.65 million +4.9%13.4%9.8 $41.75 12/15/20202,640,000 shares $108.37 million -7.4%12.8%10.5 $41.05 11/30/20202,850,000 shares $101.12 million -0.7%13.8%11.6 $35.48 11/15/20202,870,000 shares $98.56 million +3.2%13.9%12.9 $34.34 10/30/20202,780,000 shares $76.81 million -3.8%13.5%12.8 $27.63 10/15/20202,890,000 shares $86.15 million -1.4%14.2%9.5 $29.81 9/30/20202,930,000 shares $77.21 million -7.9%14.7%9 $26.35 9/15/20203,180,000 shares $87.26 million -3.3%15.9%9.6 $27.44 8/31/20203,290,000 shares $80.44 million -0.9%16.5%9.6 $24.45 8/14/20203,320,000 shares $81.74 million +20.7%16.6%9.2 $24.62 7/31/20202,750,000 shares $64.90 million -1.8%13.5%7.6 $23.60 7/15/20202,800,000 shares $82.71 million -0.7%13.8%8.9 $29.54 6/30/20202,820,000 shares $75.07 million +2.2%13.9%8.6 $26.62 6/15/20202,760,000 shares $74.08 million -8.9%13.6%8 $26.84 5/29/20203,030,000 shares $78.33 million -6.8%15.0%7.4 $25.85 PI Short Interest - Frequently Asked Questions What is Impinj's current short interest? Short interest is the volume of Impinj shares that have been sold short but have not yet been covered or closed out. As of April 30th, investors have sold 3,220,000 shares of PI short. Learn More on Impinj's current short interest. What is a good short interest ratio for Impinj? 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. PI shares currently have a short interest ratio of 4.0. Learn More on Impinj's short interest ratio. Which institutional investors are shorting Impinj? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of Impinj: Cubist Systematic Strategies LLC, Caption Management LLC, PEAK6 LLC, Walleye Trading LLC, Walleye Capital LLC, Arrowpoint Investment Partners Singapore Pte. Ltd., Simplex Trading LLC, and Garde Capital Inc.. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is Impinj's short interest increasing or decreasing? Impinj saw a decrease in short interest during the month of April. As of April 30th, there was short interest totaling 3,220,000 shares, a decrease of 0.9% from the previous total of 3,250,000 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 Impinj's short interest compare to its competitors? Here is how the short interest of companies in the industry of "electronic equipment" compare to Impinj: Celestica Inc. (3.09%), Leonardo DRS, Inc. (3.27%), Credo Technology Group Holding Ltd (6.99%), Nextracker Inc. (6.31%), Universal Display Co. (3.31%), Qorvo, Inc. (6.64%), Lumentum Holdings Inc. (15.52%), SiTime Co. (5.35%), Allegro MicroSystems, Inc. (13.48%), Tower Semiconductor Ltd. (1.73%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Spotify Technology S.A. ($4.67 billion), Charter Communications, Inc. ($4.58 billion), Capital One Financial Co. ($4.47 billion), The Kroger Co. ($2.56 billion), Reddit, Inc. ($2.23 billion), Rivian Automotive, Inc. ($2.16 billion), Live Nation Entertainment, Inc. ($1.90 billion), SoFi Technologies, Inc. ($1.85 billion), Zscaler, Inc. ($1.75 billion), and Omnicom Group Inc. ($1.75 billion). View all of the most shorted stocks. What does it mean to sell short Impinj stock? Short selling PI is an investing strategy that aims to generate trading profit from Impinj as its price is falling. PI shares are trading down $3.83 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 Impinj? A short squeeze for Impinj occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of PI, which in turn drives the price of the stock up even further. How often is Impinj'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 PI, twice per month. The most recent reporting period available is April, 30 2025. More Short Interest Resources from MarketBeat Related Companies Celestica Short Squeeze Leonardo DRS Short Squeeze Credo Technology Group Short Squeeze Nextracker Short Squeeze Universal Display Short Squeeze Qorvo Short Squeeze Lumentum Short Squeeze SiTime Short Squeeze Allegro MicroSystems Short Squeeze Tower Semiconductor Short Squeeze Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:PI) was last updated on 5/21/2025 by MarketBeat.com Staff From Our PartnersMarket 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 | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. 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