The Australian sharemarket is having a choppy start to the week and is tracking 1.4% lower before noon, erasing Friday's 1.3% gain. However, for the month of April, the market is still up 6.4%.

In Australia, investors will be watching: the Energy sector, Caltex (ASX:CTX), Fortescue Metals (ASX:FMG) and the Staples sector.

Looking at the biggest stock moves: AP Eagers (ASX:APE), Nine Entertainment (ASX:NEC), Domain (ASX:DHG) and Southern Cross Media (ASX:SXL).