Marchex, Inc. (NASDAQ:MCHX - Get Free Report) was the recipient of a significant increase in short interest during the month of September. As of September 15th, there was short interest totaling 66,288 shares, an increase of 132.0% from the August 31st total of 28,578 shares. Based on an average daily volume of 36,315 shares, the short-interest ratio is presently 1.8 days. Currently, 0.2% of the company's shares are short sold.