1. 58.com Ticker: WUBA Short interest: 54% YTD Return: -6% Comment: 58.com, which operates an online local merchant marketplace in China, reported second quarter revenue that grew 84% from a year ago on gross margins of 94.7%2. Cheetah Mobile Ticker: CMCM Short interest: 48.1% Return since IPO: 19% Sector: Mobile Software Comment: The Chinese mobile software company, which went public in May, most recently reported revenue that rose 139% year-over-year as moile revenue gained more than 1,000%. 3. Myriad Genetics Short interest: 48.1% YTD return: 81% Sector: Biopharmaceuticals Comment: Myriad, a molecular diagnostics company, reported fourth quarter revenue in August that was up about 8% from the prior year. 4. Amtrust Financial Systems Ticker: AFSI Short interest: 43% YTD return: 31% Sector: Insurance Comment: Amtrust Financial has increased gross written insurance premiums 36% each year over the past five, but The Motley Fool recently asked if the company can sustain its growth. 5. GoPro Ticker: GPRO Short interest: 41.3% Return since IPO: 175% Sector: Consumer Electronics Comment: The wearable camera company has been the best performing IPO this year and one of the most controversial stocks in the market over the last several months. 6. Jumei International Ticker: JMEI Short interest: 39.5% Return since IPO: 2% Sector: Consumer Products Comment: Jumei, which is a China-based online retailer of beauty products, made its debut on the NYSE on May 16. 7. Zulily Ticker: ZU Short interest: 34.2% YTD return: -13% Sector: Online Retail Comment: Zulily is a daily deals site for moms, and in early August posted second quarter revenue that rose 97% year-over-year while raising its full-year revenue outlook to $1.2-$1.225 billion. 8. 3D Systems Ticker: DDD Short interest: 34.2% YTD return: -57% Sector: 3D Printing Comment: 3D Systems went crazy in 2013, gaining more than 170%. In January, hedge fund manager Whitney Tilson said the stock could tumble 90%: its more than halfway there. 9. Herbalife Ticker: HLF Short interest: 33.8% YTD return: -42% Sector: Consumer Goods Comment: Herbalife is Bill Ackman's most famous short, and has been part of the reason why his Pershing Square hedge fund has had a huge year. 10 . Autohome Ticker: ATHM Short interest: 33.6% YTD return: 10% Sector: Auto Dealers Comment: Autohome, which sells cars online in China, announced second quarter revenue in August that rose 71% from the prior year. TO BE CONTINUED... Source: http://www.businessinsider.com/