I have published a yahoo stock gem. The gem provides an interface to
yahoo finance to get stock related data. For instance, latest trade
related data, volume, 50 day moving average, market cap, stock history,
etc.
There is a blog post about the gem here
:Ruby gem for stock / finance data – Nasir Jamal
The gem is here: GitHub - nas/yahoo_stock: Provides an interface to yahoo finance to get stock related data