PubMatic (PUBM) Short Interest Ratio & Short Volume $10.93 -0.25 (-2.24%) Closing price 04:00 PM EasternExtended Trading$10.77 -0.16 (-1.46%) As of 04:42 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 PubMatic Short Interest DataPubMatic (PUBM) has a short interest of 1.69 million shares. This marks a 5.63% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.9, indicating that it would take 2.9 days of the average trading volume of 548,726 shares to cover all short positions.Current Short Interest1,690,000 sharesPrevious Short Interest1,600,000 sharesChange Vs. Previous Month+5.63%Dollar Volume Sold Short$20.87 millionShort Interest Ratio2.9 Days to CoverLast Record DateJuly 15, 2025Outstanding Shares48,530,000 sharesPercentage of Shares Shorted3.48%Today's Trading Volume818,667 sharesAverage Trading Volume548,726 sharesToday's Volume Vs. Average149% Short Selling PubMatic? Sign up to receive the latest short interest report for PubMatic and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartPUBM Short Interest Over TimePUBM Days to Cover Over TimePUBM Percentage of Float Shorted Over Time PubMatic Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 7/15/20251,690,000 shares $20.87 million +5.6%N/A2.9 $12.35 6/30/20251,600,000 shares $19.90 million -16.7%4.5%2.6 $12.44 6/15/20251,920,000 shares $20.56 million +6.7%5.4%3.2 $10.71 5/31/20251,800,000 shares $21.08 million +9.8%3.9%2.9 $11.71 5/15/20251,640,000 shares $18.94 million +3.1%3.5%2.5 $11.55 4/30/20251,590,000 shares $15.53 million +12.0%N/A2.6 $9.77 4/15/20251,420,000 shares $11.79 million -0.7%3.1%2.5 $8.30 3/31/20251,430,000 shares $13.07 million -2.7%3.1%2.8 $9.14 3/15/20251,470,000 shares $13.94 million +34.9%3.2%3.2 $9.48 2/28/20251,090,000 shares $11.59 million +15.0%2.4%2.7 $10.63 Get the Latest News and Ratings for PUBM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for PubMatic and its competitors with MarketBeat's FREE daily newsletter. 2/15/2025947,500 shares $14.88 million -12.3%2.0%3 $15.70 1/31/20251,080,000 shares $16.33 million -2.7%N/A3 $15.12 1/15/20251,110,000 shares $15.98 million +4.7%N/A3.2 $14.40 12/31/20241,060,000 shares $15.57 million +1.0%N/A3.1 $14.69 12/15/20241,050,000 shares $17.12 million -5.4%N/A3 $16.30 11/30/20241,110,000 shares $17.70 million -14.0%N/A3 $15.95 11/15/20241,290,000 shares $19.20 million -5.2%N/A3.3 $14.88 10/31/20241,360,000 shares $20.00 million -2.9%N/A3.1 $14.71 10/15/20241,400,000 shares $21.41 million +2.2%N/A2.8 $15.29 9/30/20241,370,000 shares $20.37 million +2.2%N/A2.7 $14.87 9/15/20241,340,000 shares $19.54 million -3.6%N/A2.5 $14.58 8/31/20241,390,000 shares $21.68 million -8.6%N/A2.5 $15.60 8/15/20241,520,000 shares $21.05 million +0.7%N/A2.7 $13.85 7/31/20241,510,000 shares $33.16 million -10.1%N/A3.1 $21.96 7/15/20241,680,000 shares $35.58 million -2.9%N/A4 $21.18 6/30/20241,730,000 shares $35.14 million -4.4%N/A4.1 $20.31 6/15/20241,810,000 shares $38.41 million +10.4%N/A4.5 $21.22 5/31/20241,640,000 shares $35.92 million -2.4%N/A3.8 $21.90 5/15/20241,680,000 shares $39.13 million +5.0%N/A3.1 $23.29 4/30/20241,600,000 shares $35.90 million -8.1%N/A3.1 $22.44 4/15/20241,740,000 shares $37.71 million +21.7%N/A3.4 $21.67 3/31/20241,430,000 shares $33.92 million +1.4%N/A2.8 $23.72 3/15/20241,410,000 shares $32.29 million +23.7%N/A2.8 $22.90 2/29/20241,140,000 shares $23.87 million -4.2%N/A2.5 $20.94 2/15/20241,190,000 shares $19.44 million +9.2%N/A2.9 $16.34 1/31/20241,090,000 shares $16.55 million -3.5%N/A2.9 $15.18 1/15/20241,130,000 shares $16.89 million -7.4%N/A3.1 $14.95 12/31/20231,220,000 shares $19.90 million -0.8%N/A3.5 $16.31 12/15/20231,230,000 shares $21.41 million +13.9%N/A3.6 $17.41 11/30/20231,080,000 shares $18.05 million +6.9%N/A3.2 $16.71FOUR TRILLION DOLLARS! (Ad)Nvidia just became the first company in history to hit a $4 trillion valuation—surpassing Apple and Microsoft. But one controversial analyst, known for predicting the collapses of Fannie Mae, GM, and others, is issuing a serious warning. He believes Nvidia’s rise has masked a dangerous flaw—and that the stock could fall 50% or more from current levels.Click here to watch his urgent Nvidia exposé before the hype turns to panic. 11/15/20231,010,000 shares $16.15 million -4.7%N/A2.9 $15.99 10/31/20231,060,000 shares $11.95 million -7.0%N/A2.6 $11.27 10/15/20231,140,000 shares $13.69 million -21.4%N/A2.9 $12.01 9/30/20231,450,000 shares $17.55 million +5.1%N/A3.7 $12.10 9/15/20231,380,000 shares $17.29 million -14.8%N/A3.5 $12.53 8/31/20231,620,000 shares $22.52 million +8.0%N/A3.9 $13.90 8/15/20231,500,000 shares $19.28 million +26.1%N/A3.5 $12.85 7/31/20231,190,000 shares $23.79 million -9.2%N/A2.6 $19.99 7/15/20231,310,000 shares $25.15 million -5.1%N/A2.9 $19.20 6/30/20231,380,000 shares $25.23 million -1.4%N/A3 $18.28 6/15/20231,400,000 shares $27.01 million +7.7%N/A3 $19.29 5/31/20231,300,000 shares $22.82 million -26.1%N/A2.8 $17.55 5/15/20231,760,000 shares $26.19 million +1.2%N/A3.4 $14.88 4/30/20231,740,000 shares $23.77 million -13.9%N/A3.7 $13.66 4/15/20232,020,000 shares $28.79 million +6.3%N/A4.6 $14.25 3/31/20231,900,000 shares $26.26 million -7.3%N/A4.3 $13.82 3/15/20232,050,000 shares $27.16 million +2.5%N/A4.3 $13.25 2/28/20232,000,000 shares $30.36 million +1.0%N/A4 $15.18 2/15/20231,980,000 shares $33.54 million +0.5%N/A4.5 $16.94 1/31/20231,970,000 shares $30.20 million -3.0%N/A4.1 $15.33 1/15/20232,030,000 shares $28.81 million -2.4%N/A4 $14.19 12/30/20222,080,000 shares $26.64 million -8.0%N/A4.1 $12.81 12/15/20222,260,000 shares $29.40 million -2.6%N/A4.2 $13.01 11/30/20222,320,000 shares $36.35 million -4.5%N/A4.2 $15.67 11/15/20222,430,000 shares $39.78 million -2.8%N/A4.3 $16.37 10/31/20222,500,000 shares $43.50 million -0.4%N/A4.2 $17.40 10/15/20222,510,000 shares $41.87 million +6.8%N/A4 $16.68 9/30/20222,350,000 shares $39.08 million -12.0%N/A3.5 $16.63 9/15/20222,670,000 shares $48.59 million -16.6%N/A3.4 $18.20 8/31/20223,200,000 shares $62.62 million -7.5%N/A3.8 $19.57 8/15/20223,460,000 shares $78.47 million -16.6%N/A3.9 $22.68 7/31/20224,150,000 shares $68.85 million -12.1%N/A4.2 $16.59 7/15/20224,720,000 shares $73.35 million -5.8%N/A5 $15.54 6/30/20225,010,000 shares $79.61 million +53.7%N/A5.2 $15.89 6/15/20223,260,000 shares $61.68 million +14.8%N/A3.4 $18.92 5/31/20222,840,000 shares $56.63 million +10.5%N/A3.3 $19.94 5/15/20222,570,000 shares $57.26 million No ChangeN/A2.7 $22.28 4/30/20222,570,000 shares $58.00 million +14.2%N/A2.7 $22.57 4/15/20222,250,000 shares $54.97 million -5.5%N/A2.3 $24.43 3/31/20222,380,000 shares $62.17 million +10.2%N/A2.3 $26.12 3/15/20222,160,000 shares $41.93 million +1.4%N/A2 $19.41 2/28/20222,130,000 shares $65.18 million +10.4%N/A1.9 $30.60 2/15/20221,930,000 shares $61.35 million +12.9%N/A1.6 $31.79 1/31/20221,710,000 shares $41.98 million +13.3%N/A1.1 $24.55 1/15/20221,510,000 shares $39.56 million +14.4%N/A1 $26.20 12/31/20211,320,000 shares $44.95 million -36.5%N/A0.8 $34.05 12/15/20212,080,000 shares $73.09 million -14.1%N/A1.3 $35.14 11/30/20212,420,000 shares $95.28 million +3.0%N/A1.6 $39.37 11/15/20212,350,000 shares $90.01 million +2.6%N/A1.7 $38.30 10/29/20212,290,000 shares $65.45 million +2.2%N/A2.2 $28.58FOUR TRILLION DOLLARS! (Ad)Nvidia just became the first company in history to hit a $4 trillion valuation—surpassing Apple and Microsoft. But one controversial analyst, known for predicting the collapses of Fannie Mae, GM, and others, is issuing a serious warning. He believes Nvidia’s rise has masked a dangerous flaw—and that the stock could fall 50% or more from current levels.Click here to watch his urgent Nvidia exposé before the hype turns to panic. 10/15/20212,240,000 shares $65.27 million -20.9%N/A2.2 $29.14 9/30/20212,830,000 shares $74.57 million +18.9%N/A2.9 $26.35 9/15/20212,380,000 shares $68.00 million -5.9%N/A2.3 $28.57 8/31/20212,530,000 shares $73.75 million -9.3%N/A2.2 $29.15 8/13/20212,790,000 shares $82.75 million +3.3%N/A2 $29.66 7/30/20212,700,000 shares $80.22 million +3.1%39.3%2.1 $29.71 7/15/20212,620,000 shares $79.78 million +0.8%36.7%2.2 $30.45 6/30/20212,600,000 shares $101.58 million -9.1%36.4%2.2 $39.07 6/15/20212,860,000 shares $96.32 million -24.3%41.6%2.7 $33.68 5/28/20213,780,000 shares $111.77 million +9.6%55.0%4.3 $29.57 5/14/20213,450,000 shares $118.40 million +6.5%N/A4.9 $34.32 4/30/20213,240,000 shares $174.77 million +10.6%50.4%4.8 $53.94 4/15/20212,930,000 shares $155.58 million -2.3%45.6%4.3 $53.10 3/31/20213,000,000 shares $148.17 million +23.5%49.6%4 $49.39 3/15/20212,430,000 shares $139.29 million +23.4%40.6%3.2 $57.32 2/26/20211,970,000 shares $128.90 million +4.2%32.9%2.1 $65.43 2/12/20211,890,000 shares $87.24 million +25.2%80.4%2.1 $46.16 1/29/20211,510,000 shares $54.74 million +11.0%70.2%1.6 $36.25 1/15/20211,360,000 shares $40.79 million No Change63.3%1.4 $29.99 PUBM Short Interest - Frequently Asked Questions What is PubMatic's current short interest? Short interest is the volume of PubMatic shares that have been sold short but have not yet been closed out or covered. As of July 15th, investors have sold 1,690,000 shares of PUBM short. Learn More on PubMatic's current short interest. What is a good short interest ratio for PubMatic? 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. PUBM shares currently have a short interest ratio of 3.0. Learn More on PubMatic's short interest ratio. Which institutional investors are shorting PubMatic? As of the most recent reporting period, the following institutional investors, funds, and major shareholders have reported short positions of PubMatic: Parallax Volatility Advisers L.P., Walleye Trading LLC, Walleye Capital LLC, and Simplex Trading LLC. These positions are disclosed in Form 13F filings with the Securities and Exchange Commission. Is PubMatic's short interest increasing or decreasing? PubMatic saw a increase in short interest in the month of July. As of July 15th, there was short interest totaling 1,690,000 shares, an increase of 5.6% from the previous total of 1,600,000 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 PubMatic's short interest compare to its competitors? Here is how the short interest of companies in the industry of "computer software" compare to PubMatic: Magnite, Inc. (13.42%), Sprinklr, Inc. (10.48%), Appian Corporation (9.60%), VNET Group, Inc. - Unsponsored ADR (8.92%), EverCommerce Inc. (4.90%), Sharplink Gaming Inc. (5.42%), BigBear.ai Holdings, Inc. (24.61%), AvidXchange Holdings, Inc. (2.37%), Coursera, Inc. (4.30%), Formula Systems (1985) Ltd. (0.00%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Coinbase Global, Inc. ($5.11 billion), Charter Communications, Inc. ($4.76 billion), Reddit Inc. ($2.84 billion), SoFi Technologies, Inc. ($2.79 billion), Seagate Technology Holdings PLC ($2.79 billion), Live Nation Entertainment, Inc. ($2.67 billion), Rocket Lab Corporation ($2.49 billion), AST SpaceMobile, Inc. ($2.12 billion), Moderna, Inc. ($2.09 billion), and Omnicom Group Inc. ($2.04 billion). View all of the most shorted stocks. What does it mean to sell short PubMatic stock? Short selling PUBM is an investing strategy that aims to generate trading profit from PubMatic as its price is falling. PUBM shares are trading down $0.25 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 PubMatic? A short squeeze for PubMatic 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 PUBM, which in turn drives the price of the stock up even further. How often is PubMatic'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 PUBM, twice per month. The most recent reporting period available is July, 15 2025. More Short Interest Resources from MarketBeat Related Companies Magnite Short Interest Sprinklr Short Interest Appian Short Interest VNET Group Short Interest EverCommerce Short Interest Sharplink Gaming Short Interest BigBear.ai Short Interest AvidXchange Short Interest Coursera Short Interest Formula Systems (1985) 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:PUBM) was last updated on 8/8/2025 by MarketBeat.com Staff From Our PartnersTrump set to Boost Social Security Checks by 400%?If you're collecting or planning to collect social security... 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