Can I insert stock quotes details into articles ?

You can quickly insert symbol trading information to your Joomla articles by using the content plugin available in the Ekonomys extension

Below you can see an usage example of Ekonomys content plugin displaying chart and financial details for Google. The financial details displayed are configured from the Ekonomys component backend - from there you can select/deselect the fields you want to show/hide.

All you have to do is add the symbol to the component from the component's symbols list, then insert the chart and content to the article as

{Ekonomys symbol='GOOG'}

See the full article and inserted financial details here