StockViz

The WordPress shortcode plugin allows you to pull in the latest stock price from within your post.
Simply surround the stock symbol by the shortcode: stockquote and you are all set!

For example, to insert the latest quote for INDUSINDBK, simply put:
[stockquote]INDUSINDBK[/stockquote]
inside your post.

Note: This only works for stocks listed in the Indian National Stock Exchange (NSE)