In the current session, eBay Inc. (NASDAQ:EBAY) is trading at $50.55, after a 2.33% increase. Over the past month, the stock increased by 11.00%, and in the past year, by 26.72%. With performance like this, long-term shareholders optimistic but others are more likely to look into the price-to-earnings ratio to see if the stock might be overvalued.

Assuming that all other factors are held constant, this could present itself as an opportunity for shareholders trying to capitalize on the higher share price. The stock is currently under from its 52 week high by 2.56%.

Most often, an industry will prevail in a particular phase of a business cycle, than other industries.

eBay Inc. has a better P/E ratio of 22.76 than the aggregate P/E ratio of 21.25 of the Internet Retail industry. Ideally, one might believe that eBay Inc. might perform better in the future than it’s industry group, but it’s probable that the stock is overvalued.

There are many limitations to P/E ratio. It is sometimes difficult to determine the nature of the earnings makeup of a company. Shareholders might not get what they're looking for, from trailing earnings.