The World Health Organization reports a 75 percent jump in the number of confirmed swine flu cases worldwide since Wednesday.

VOA: standard.2009.04.30

So, there's been a number of articles that documented that stock prices tend to jump shortly after options are issued to managers.

有一些文章记载表明,在公司发给经理们股票期权之后,股票的价格往往会出现短期激涨

耶鲁公开课 - 金融市场课程节选