New Zealand shares rose on the first trading day of 2013, following gains on Wall Street, as investors drove up companies that have featured on broker lists for 2013, such as PGG Wrightson and Ryman Healthcare.

NZ company Pacific Edge Biotech is on track to roll out its product to the US, Australia, Spain and Portugal.

Dunedin-based company Pacific Edge says it has been awarded a patent in Singapore for its colorectal cancer prognostic technology.