If he's gone above the monopoly price we need to be a little bit more careful.

如果它高于垄断价格了,我们需要小心点

耶鲁公开课 - 博弈论课程节选

Some of these are still listed on The New York Stock Exchange page; on the day that a stock goes ex-dividend, they'll have a little "x" by its price.

有些还在纽约证交所的网页上,股票除息的那一天,股价前面会有个小小的"x"标记

耶鲁公开课 - 金融市场课程节选