Bearish traders are adding to bets against social networking companies, despite a surge in share prices of groups like LinkedIn and Renren after Facebook’s announcement of flotation plans last week, the FT reports. LinkedIn, the professional networking website, and Renren, the Chinese social network, have seen the number of their shares borrowed and sold, a proxy for short selling, reach the highest levels since their public debuts last year. Short selling in Groupon and Zynga also touched post-initial public offering highs last week, according to Data Explorers, which collects stock-lending data. Bearish bets on social networking groups have risen as many traders worry that valuations of companies such as Groupon and Zynga were artificially inflated after each group’s IPO floated only a small percentage of shares, often about 10 per cent. Groupon and Zynga have just 2.2 per cent and 2.5 per cent of their total shares sold short. But because a large portion are not publicly traded, this means that over 90 per cent of their available shares are utilised for shorting, according to Data Explorers. Read more
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