Looking for a free source for information on current and historical
price-to-earnings (PE) ratios for various global financial market
indices and/or asset classes.

E.g., the PE ratio of the S&P 500 is 18.2, the PE of the "emerging
markets" asset class is 25.4.  Optimal would be historical time-series
of the ratios (e.g., a chart or table showing how the PE ratio has
varied over time).

I've been to Reuters and Yahoo! Finance, but haven't found what I'm looking for.

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Request for Question Clarification by wonko-ga on 06 Feb 2006 14:42 PST

Judging from the following, you would probably have to purchase that
type of data from the entity managing that particular index.  See, for
example, the sources noted in the S&P500 PE ratio chart at
http://flagship5.vanguard.com/VGApp/hnw/VanguardViews?FW_Event=vviewsnewsletters&chunk=/freshness/News_and_Views/news_ITVwinter2005_ALL_mktbarom_ALL.html&Season2=Winter&Year2=2005.

Sincerely,

Wonko