One method divides the price (of a stock or index) by its trailing 12-month earnings.

FORBES: Bad News Usually Spells Good Buys

From there you can link to news on a specific ADR or choose to compare a stock price chart to one of a number of indexes (unfortunately, there's no emerging-market index).

FORBES: Emerging Markets

Peugeot, a founding member of the main French stock market index, the Cac-40, was demoted last year as a result of its tumbling share price.

BBC: Peugeot writes off 4bn euros as car market worsens

The stock price used here is the Morgan Stanley (nyse: MS - news - people ) World Index, which tracks 1, 869 stocks in the world's developed markets.

FORBES: Put Some Money in Japan

Over the past year the stock price of Hong Kong-listed VTech has more than doubled, at a time when the local Hang Seng index has plummeted and local real estate values have collapsed.

FORBES: The VTech phenomenon