Affymax (AFFY) Short Interest Ratio & Short Volume $0.0008 0.00 (0.00%) As of 09/5/2025 Add Compare Share Share Short Interest Stock AnalysisChartShort InterestBuy This Stock Affymax Short Interest DataAffymax (AFFY) has a short interest of 32,800 shares. This marks a 0.00% change in short interest from the previous month. The short interest ratio (days to cover) is 328.0, indicating that it would take 328.0 days of the average trading volume of 729 shares to cover all short positions.Current Short Interest32,800 sharesPrevious Short Interest32,800 sharesChange Vs. Previous MonthNo ChangeDollar Volume Sold Short$26.24Short Interest Ratio328.0 Days to CoverLast Record DateAugust 15, 2025Today's Trading Volume10 sharesAverage Trading Volume729 sharesToday's Volume Vs. Average1% Short Selling Affymax? Sign up to receive the latest short interest report for Affymax and its competitors with MarketBeat's FREE newsletter. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartAFFY Short Interest Over TimeAFFY Days to Cover Over TimeAFFY Percentage of Float Shorted Over Time Affymax Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/15/202532,800 shares $26.24 No ChangeN/A328 $0.00 7/31/202532,800 shares $26.24 No ChangeN/A36.4 $0.00 7/15/202532,800 shares $26.24 No ChangeN/A3 $0.00 6/30/202532,800 shares $26.24 No ChangeN/A4.6 $0.00 6/15/202532,800 shares $26.24 No ChangeN/A21.9 $0.00 5/31/202532,800 shares $26.24 No ChangeN/A328 $0.00 5/15/202532,800 shares $26.24 No ChangeN/A6.4 $0.00 4/30/202532,800 shares $26.24 No ChangeN/A23.4 $0.00 4/15/202532,800 shares $26.24 No ChangeN/A5.8 $0.00 3/31/202532,800 shares $26.24 No ChangeN/A36.4 $0.00 Get the Latest News and Ratings for AFFY and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Affymax and its competitors with MarketBeat's FREE daily newsletter. 3/15/202532,800 shares $22.96 No ChangeN/A328 $0.00 2/28/202532,800 shares $26.24 No ChangeN/A5.9 $0.00 2/15/202532,800 shares $22.96 No ChangeN/A54.7 $0.00 1/31/202532,800 shares $26.24 No ChangeN/A36.4 $0.00 1/15/202532,800 shares $26.24 No ChangeN/A0.7 $0.00 12/31/202432,800 shares $26.24 No ChangeN/A0.8 $0.00 12/15/202432,800 shares $26.24 No ChangeN/A0.6 $0.00 11/30/202432,800 shares $26.24 No ChangeN/A54.7 $0.00 11/15/202432,800 shares $78.72 No ChangeN/A27.3 $0.00 10/31/202432,800 shares $26.24 No ChangeN/A9.4 $0.00 10/15/202432,800 shares $26.24 No ChangeN/A3.4 $0.00 9/30/202432,800 shares $22.96 No ChangeN/A10.9 $0.00 9/15/202432,800 shares $22.96 No ChangeN/A6.1 $0.00 8/31/202432,800 shares $22.96 No ChangeN/A16.4 $0.00 8/15/202432,800 shares $22.96 No ChangeN/A14.3 $0.00 7/31/202432,800 shares $22.96 No ChangeN/A41 $0.00 7/15/202432,800 shares $22.96 No ChangeN/A65.6 $0.00 6/30/202432,800 shares $68.88 No ChangeN/A65.6 $0.00 6/15/202432,800 shares $22.96 No ChangeN/A328.1 $0.00 5/31/202432,800 shares $22.96 No ChangeN/A10.9 $0.00 5/15/202432,800 shares $24.60 No ChangeN/A4.1 $0.00 4/30/202432,800 shares $22.96 No ChangeN/A3.2 $0.00 4/15/202432,800 shares $22.96 No ChangeN/A0.4 $0.00 3/31/202432,800 shares $22.96 No ChangeN/A328 $0.00 3/15/202432,800 shares $22.96 No ChangeN/A25.2 $0.00 2/29/202432,800 shares $68.88 No ChangeN/A46.9 $0.00 2/15/202432,800 shares $22.96 No ChangeN/A3.6 $0.00 1/15/202432,800 shares $22.96 No ChangeN/A36.4 $0.00 12/31/202332,800 shares $19.68 No ChangeN/A3.6 $0.00 12/15/202332,800 shares $19.68 No ChangeN/A12.1 $0.00 11/30/202332,800 shares $19.68 No ChangeN/A12.6 $0.00 11/15/202332,800 shares $19.68 -0.3%N/A328 $0.00 10/31/202332,900 shares $9.87 No ChangeN/A5.4 $0.00 10/15/202332,900 shares $6.58 No ChangeN/A12.2 $0.00 9/30/202332,900 shares $138.18 No ChangeN/A109.7 $0.00 9/15/202332,900 shares $138.18 No ChangeN/A13.7 $0.00 8/31/202332,900 shares $144.76 No ChangeN/A87.4 $0.00 8/15/202332,900 shares $144.76 No ChangeN/A9.4 $0.00 7/31/202332,900 shares $138.18 -5.7%N/A5.1 $0.00 7/15/202334,900 shares $150.07 No ChangeN/A87.3 $0.00 6/30/202334,900 shares $143.09 No ChangeN/A31.7 $0.00 6/15/202334,900 shares $143.09 No ChangeN/A19.4 $0.00 5/31/202334,900 shares $143.09 No ChangeN/A4.3 $0.00 5/15/202334,900 shares $143.09 No ChangeN/A10.9 $0.00 4/30/202334,900 shares $143.09 No ChangeN/A3.6 $0.00 4/15/202334,900 shares $139.60 No ChangeN/A87.3 $0.00 3/31/202334,900 shares $139.60 No ChangeN/A1.9 $0.00 3/15/202334,900 shares $139.60 No ChangeN/A116.3 $0.00 2/28/202334,900 shares $139.60 No ChangeN/A2.5 $0.00 2/15/202334,900 shares $349.00 No ChangeN/A349 $0.01 1/31/202334,900 shares $349.00 No ChangeN/A349 $0.01 1/15/202334,900 shares $349.00 No ChangeN/A5.6 $0.01 12/30/202234,900 shares $139.60 No ChangeN/A6.7 $0.00 12/15/202234,900 shares $226.85 No ChangeN/A11.6 $0.01 11/30/202234,900 shares $216.38 No ChangeN/A69.8 $0.01 11/15/202234,900 shares $216.38 No ChangeN/A8.1 $0.01 10/31/202234,900 shares $216.38 No ChangeN/A17.5 $0.01 10/15/202234,900 shares $34.90 No ChangeN/A5.2 $0.00 9/30/202234,900 shares $216.38 No ChangeN/A116.3 $0.01 9/15/202234,900 shares $216.38 No ChangeN/A15.9 $0.01 8/31/202234,900 shares $216.38 No ChangeN/A174.5 $0.01 8/15/202234,900 shares $251.28 No ChangeN/A58.2 $0.01 7/31/202234,900 shares $216.38 No ChangeN/A1.7 $0.01 7/15/202234,900 shares $216.38 No ChangeN/A29.1 $0.01 6/30/202234,900 shares $216.38 No ChangeN/A0.8 $0.01 6/15/202234,900 shares $216.38 No ChangeN/A69.8 $0.01 5/31/202234,900 shares $216.38 No ChangeN/A8.7 $0.01 5/15/202234,900 shares $223.36 No ChangeN/A1 $0.01 4/30/202234,900 shares $216.38 No ChangeN/A3.6 $0.01 4/15/202234,900 shares $216.38 No ChangeN/A349 $0.01 3/31/202234,900 shares $216.38 No ChangeN/A1.5 $0.01 3/15/202234,900 shares $216.38 No ChangeN/A16.6 $0.01 2/28/202234,900 shares $212.89 No ChangeN/A349 $0.01 2/15/202234,900 shares $216.38 No ChangeN/A349 $0.01 1/31/202234,900 shares $216.38 No ChangeN/A34.9 $0.01 1/15/202234,900 shares $209.40 No ChangeN/A2.9 $0.01 12/31/202134,900 shares $209.40 No ChangeN/A0.4 $0.01 12/15/202134,900 shares $209.40 No ChangeN/A2.7 $0.01 11/30/202134,900 shares $174.50 No ChangeN/A0.9 $0.01 11/15/202134,900 shares $139.60 No ChangeN/A0.5 $0.00 10/29/202134,900 shares $69.80 No ChangeN/A18.4 $0.00 10/15/202134,900 shares $69.80 No ChangeN/A23.3 $0.00 9/30/202134,900 shares $698.00 -4.4%N/A1.7 $0.02 9/15/202136,500 shares $839.50 -21.2%N/A1.5 $0.02 8/31/202146,300 shares $1.48 thousand -19.2%N/A0.4 $0.03 8/13/202157,300 shares $2.35 thousand +64.2%N/A0.3 $0.04 7/30/202134,900 shares $1.38 thousand -2.8%N/A1.3 $0.04 7/15/202135,900 shares $1.44 thousand +0.8%N/A0.3 $0.04 6/30/202135,600 shares $2.05 thousand +0.3%N/A0.6 $0.06 6/15/202135,500 shares $2.66 thousand No ChangeN/A1.1 $0.07 5/28/202135,500 shares $2.13 thousand No ChangeN/A1.8 $0.06 5/14/202135,500 shares $2.13 thousand -53.5%N/A0.6 $0.06 4/30/202176,400 shares $7.64 thousand +16.1%N/A1.7 $0.10 4/15/202165,800 shares $5.92 thousand +54.1%N/A0.8 $0.09 3/31/202142,700 shares $2.99 thousand +20.3%N/A1.9 $0.07 3/15/202135,500 shares $3.10 thousand -11.9%N/A0.3 $0.09 2/26/202140,300 shares $3.63 thousand +13.5%N/A0.5 $0.09 2/12/202135,500 shares $2.84 thousand -25.0%N/A0.4 $0.08 1/29/202147,300 shares $4.26 thousand +22.5%N/A0.3 $0.09 1/15/2021106,800 shares $12.82 thousand +22.3%N/A1 $0.12 12/31/202035,500 shares $3.81 thousand -66.8%N/A0.2 $0.11 12/15/2020106,800 shares $18.16 thousand +22.3%N/A1 $0.17 11/30/202087,300 shares $17.90 thousand +46.0%N/A0.3 $0.21 11/15/202059,800 shares $8.91 thousand No ChangeN/A0.8 $0.15 10/30/202059,800 shares $7.77 thousand -25.5%N/A0.3 $0.13 10/15/202080,300 shares $16.86 thousand -55.9%N/A0.5 $0.21 9/30/2020182,000 shares $42.04 thousand +188.0%N/A1 $0.23 9/15/202063,200 shares $5.06 thousand -40.7%N/A0.4 $0.08 AFFY Short Interest - Frequently Asked Questions What is Affymax's current short interest? Short interest is the volume of Affymax shares that have been sold short but have not yet been covered or closed out. As of August 15th, traders have sold 32,800 shares of AFFY short. Learn More on Affymax's current short interest. What is a good short interest ratio for Affymax? 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. AFFY shares currently have a short interest ratio of 328.0. Learn More on Affymax's short interest ratio. How does Affymax's short interest compare to its competitors? Here is how the short interest of companies in the industry of "biotechnology" compare to Affymax: Amgen Inc. (2.02%), Gilead Sciences, Inc. (1.47%), Vertex Pharmaceuticals Incorporated (1.45%), Regeneron Pharmaceuticals, Inc. (2.30%), Alnylam Pharmaceuticals, Inc. (2.62%), Biogen Inc. (2.84%), Incyte Corporation (4.98%), Neurocrine Biosciences, Inc. (4.01%), United Therapeutics Corporation (6.54%), BioMarin Pharmaceutical Inc. (2.58%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks. What does it mean to sell short Affymax stock? Short selling AFFY is an investing strategy that aims to generate trading profit from Affymax 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 Affymax? A short squeeze for Affymax 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 AFFY, which in turn drives the price of the stock up even further. How often is Affymax'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 AFFY, twice per month. The most recent reporting period available is August, 15 2025. More Short Interest Resources from MarketBeat Related Companies AMGN Short Interest GILD Short Interest VRTX Short Interest REGN Short Interest ALNY Short Interest BIIB Short Interest INCY Short Interest NBIX Short Interest UTHR Short Interest BMRN Short Interest Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (OTCMKTS:AFFY) was last updated on 9/7/2025 by MarketBeat.com Staff From Our PartnersYour Bank Account Is No Longer SafeWhat If Washington Declared That: YOUR Money ISN'T Actually Yours? 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