This company has been marked as potentially delisted and may not be actively trading. Stamps.com (STMP) Short Interest Ratio & Short Volume Add Compare Share Share Short Interest Stock AnalysisBuy This Stock Stamps.com Short Interest DataStamps.com (STMP) has a short interest of 1.14 million shares, representing 6.52% of the float (the number of shares available for trading by the public). This marks a 3.64% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.7, indicating that it would take 2.7 days of the average trading volume of 366,674 shares to cover all short positions.Current Short Interest1,140,000 sharesPrevious Short Interest1,100,000 sharesChange Vs. Previous Month+3.64%Dollar Volume Sold Short$374.78 millionShort Interest Ratio2.7 Days to CoverLast Record DateSeptember 15, 2021Outstanding Shares18,426,000 sharesFloat Size17,480,000 sharesShort Percent of Float6.52%Today's Trading Volume0 sharesAverage Trading Volume366,674 sharesToday's Volume Vs. Average0% Short Selling Stamps.com? Sign up to receive the latest short interest report for Stamps.com and its competitors with MarketBeat's FREE newsletter. Email Address Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartSTMP Short Interest Over TimeSTMP Days to Cover Over TimeSTMP Percentage of Float Shorted Over Time Stamps.com Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 9/15/20211,140,000 shares $374.78 million +3.6%6.5%2.7 $328.75 8/31/20211,100,000 shares $361.79 million -2.7%6.3%2.8 $328.90 8/13/20211,130,000 shares $369.35 million +10.8%6.5%2.9 $326.86 7/30/20211,020,000 shares $333.30 million +142.1%5.9%2.6 $326.76 7/15/2021421,300 shares $136.59 million -41.9%2.4%1.2 $324.22 6/30/2021724,500 shares $145.11 million -6.3%4.1%2.4 $200.29 6/15/2021772,800 shares $154.07 million -2.1%4.5%3.6 $199.36 5/28/2021789,500 shares $148.17 million -1.7%4.6%3.5 $187.68 5/14/2021803,400 shares $133.59 million +11.0%4.7%2.8 $166.28 4/30/2021723,900 shares $153.03 million -9.9%N/A2.1 $211.39 Get the Latest News and Ratings for STMP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Stamps.com and its competitors with MarketBeat's FREE daily newsletter. 4/15/2021803,200 shares $170.88 million -9.2%N/A2.3 $212.75 3/31/2021884,200 shares $170.80 million +3.1%N/A2.5 $193.17 3/15/2021857,900 shares $163.20 million -20.6%N/A2.3 $190.23 2/26/20211,080,000 shares $199.05 million +84.6%N/A2.8 $184.31 2/12/2021585,200 shares $160.46 million -22.5%N/A1.6 $274.20 1/29/2021755,200 shares $181.57 million -26.0%N/A2.1 $240.42 1/15/20211,020,000 shares $216.61 million -4.7%N/A2.9 $212.36 12/31/20201,070,000 shares $223.12 million +1.9%N/A3.2 $208.52 12/15/20201,050,000 shares $208.13 million +13.4%N/A3.1 $198.22 11/30/2020926,200 shares $170.27 million -2.3%N/A2.8 $183.84 11/15/2020948,300 shares $175.64 million +12.4%N/A2.9 $185.22 10/30/2020843,800 shares $195.45 million -6.8%N/A2.7 $231.63 10/15/2020905,600 shares $246.86 million -12.1%5.4%2.8 $272.59 9/30/20201,030,000 shares $248.18 million +17.1%6.1%3.1 $240.95 9/15/2020879,500 shares $187.69 million +8.2%5.2%2.5 $213.40 8/31/2020812,900 shares $202.69 million -2.3%4.8%2.4 $249.34 8/14/2020831,600 shares $228.39 million -23.0%4.9%2.5 $274.64 7/31/20201,080,000 shares $281.10 million +3.9%6.6%3.1 $260.28 7/15/20201,040,000 shares $205.41 million +5.9%6.4%3.2 $197.51 6/30/2020982,300 shares $174.11 million +1.7%6.0%3.1 $177.25 6/15/2020965,600 shares $164.91 million -4.4%5.9%3.1 $170.78 5/29/20201,010,000 shares $200.13 million -9.0%6.2%2.7 $198.15 5/15/20201,110,000 shares $216.68 million -12.6%6.8%2.6 $195.21 STMP Short Interest - Frequently Asked Questions What is Stamps.com's current short interest? Short interest is the volume of Stamps.com shares that have been sold short but have not yet been closed out or covered. As of September 15th, traders have sold 1,140,000 shares of STMP short. 6.52% of Stamps.com's shares are currently sold short. Learn More on Stamps.com's current short interest. What is a good short interest ratio for Stamps.com? 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. STMP shares currently have a short interest ratio of 3.0. Learn More on Stamps.com's short interest ratio. What is a good short interest percentage for Stamps.com? 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. 6.52% of Stamps.com's floating shares are currently sold short. Is Stamps.com's short interest increasing or decreasing? Stamps.com saw a increase in short interest in September. As of September 15th, there was short interest totaling 1,140,000 shares, an increase of 3.6% from the previous total of 1,100,000 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. What is Stamps.com's float size? Stamps.com currently has issued a total of 18,426,000 shares. Some of Stamps.com's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Stamps.com currently has a public float of 17,480,000 shares. How does Stamps.com's short interest compare to its competitors? 6.52% of Stamps.com's shares are currently sold short. Here is how the short interest of companies compare to Stamps.com: VeriSign, Inc. (2.06%), Akamai Technologies, Inc. (4.65%), SPS Commerce, Inc. (3.20%), Yelp Inc. (5.67%), Ziff Davis, Inc. (6.47%), Cimpress plc (8.12%), Liquidity Services, Inc. (6.78%), QuinStreet, Inc. (5.67%), Opendoor Technologies Inc. (11.74%), Angi Inc. (7.39%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Block, Inc. ($9.12 billion), S&P Global Inc. ($7.79 billion), Advanced Micro Devices, Inc. ($6.62 billion), Charter Communications, Inc. ($6.07 billion), Wayfair Inc. ($4.53 billion), Zoom Video Communications, Inc. ($3.45 billion), Uber Technologies, Inc. ($3.08 billion), Canadian Pacific Kansas City Limited ($2.97 billion), Palo Alto Networks, Inc. ($2.74 billion), and MongoDB, Inc. ($2.61 billion). View all of the most shorted stocks. What does it mean to sell short Stamps.com stock? Short selling STMP is an investing strategy that aims to generate trading profit from Stamps.com as its price is falling. 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 Stamps.com? A short squeeze for Stamps.com 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 STMP, which in turn drives the price of the stock up even further. How often is Stamps.com'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 STMP, twice per month. The most recent reporting period available is September, 15 2021. More Short Interest Resources from MarketBeat Related Companies VRSN Short Interest Data AKAM Short Interest Data SPSC Short Interest Data YELP Short Interest Data ZD Short Interest Data CMPR Short Interest Data LQDT Short Interest Data QNST Short Interest Data OPEN Short Interest Data ANGI 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:STMP) was last updated on 5/5/2025 by MarketBeat.com Staff From Our PartnersElon’s Terrifying Warning Forces Trump To Take ActionElon Musk has avoided two major financial crises before. He pulled Tesla and SpaceX back from the brink of col...American Hartford Gold | SponsoredTrump’s Bitcoin Reserve is No Accident…Bryce Paul believes this is the #1 coin to buy right now The catalyst behind this surge is a massive new b...Crypto 101 Media | SponsoredMost traders are panicking. 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