Currently, when you search for stock prices on Google, the live stock quotes are supplied by ECN while the detailed results are from Yahoo Finance, MSN Money Central and Fool.com.
Google may be preparing to replace this workaround soon with Google Finance or GFinance.
Loren of SEJ is speculating that Google Finance may be nearing launch.
First, he noticed a few referrals from Google.com/finance. Second, the referrals come from computers tracked back to Google.com.
http://google.com/finance?q=goog&btng=search+finance
finance.google.com returns "Server not found" error while google.com/finance returns a 404 error.
Loren also feels that the Google Finance portal is listing either blog or news stories related to stock ticker symbols, as the referrals were pointing to his most recent stories on Google Japan and Google Page Creator.A previous Google Finance launch rumour suggested that Google wants to replicate Yahoo Finance and is in talks with data vendor Revere Data for stock information.