Nasdaq has released an iPhone app that enables users to track the performance of their portfolio, access share price information and search for the latest tweets on particular stocks.

The QFolio App is designed for the average novice investor to the active trader, says Nasdaq. It offers access to real-time pre-market, regular session and after hours trading data alongside a stock search facility.

Users can monitor the performance of their portfolio and set up watch lists to track particular stocks of interest.

The app also comes with a built-in StockTwits feature for users to drill down into the real-time Twitter buzz on particular stocks.