OpenTable's stock has lost more than a fifth of its peak value, and short interest on the stock is rising, suggesting bearish investors are betting on further declines to come.
OpenTable的股价已较高点回落逾1/5，股票卖空额在上升，这说明看跌者正在赌股价进一步下跌。
Here's the basic idea: According to expected utility theory, people make risky decisions by balancing the value of all possible outcomes. So let's say that you're betting on the flip of a coin.
其基本思想如下：根据期望效用理论，人们的风险决策是在权衡所有可能产出后得到的结果。
Some investors are more creative. Mark Hart of Corriente Advisors, a hedge fund, has bought put options on the yuan, betting that the value of the currency will decline.
有些投资者表现的更加激进，沃思堡顾问公司的马克·哈特，已经在使用看跌期权做空人民币。
Some investors are more creative. Mark Hart of Corriente Advisors, a hedge fund, has bought put options on the yuan, betting that the value of the currency will decline.
有些投资者表现的更加激进，沃思堡顾问公司的马克·哈特，已经在使用看跌期权做空人民币。
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