Major heavyweight stocks drove the NZ sharemarket 133 points higher today to 12,728.35 on the NZX50, with freight and logistics group Mainfreight leading the way with a 4.5% or $3.62 rally to $83 a share after an upbeat AGM. The group’s 17 weeks (1 April-25 July) update confirmed strong trends with revenue +41% at $1.67bn. […]