I'm curious - can someone explain to me how Yahoo still has a higher P/E ratio than say, Apple? For that matter, why is EBay's P/E higher than Google's?
Basically boils down to odds and the change in growth rate. Just because a company is consistently, wildly profitable does not mean they should have a high P/E ratio. P/E is often much more influenced by the growth rate for earnings. With Yahoo and eBay, investors are saying that these companies are more likely to grow very quickly than Apple and Google, which makes perfect sense since those two giants will most likely grow between some range. Investors must believe Yahoo is either be a huge hit or miss and eBay must have some reasons for people to believe they can juice their growth rate higher quickly, perhaps based on their acquisitions, room to expand their fees, acquiring new customers etc.
*Edit: Added note on Yahoo, its assets (as the Asian comment below reminded me to add) could very well be worth more than its current valuation. This article explains how: http://techcrunch.com/2011/06/24/yahoo-shareholder-bartz/