In today's (Oct 24) lecture I mentioned the notion "material disclosure" - the requirement for public firms to reveal important information so that "insiders" don't have non-public information they can use to make money by buying or selling their stock. We also mentioned the 180 day "lockup" period after a company goes public during which employees can't sell stock, which has some of the same motivation. In today's Wall Street Journal there is a front page story about how a lot of luxury merchants in Silicon Valley are counting down the days to November 21, when LinkedIn's lo