MT Newswires -ShutterstockCommunications shares gained the most on the New Zealand Exchange, rising 1% by midday Thursday. Spark New Zealand (NZE:SPK, ASX:SPK) was the best performer in the sector, rising past 1%. Meanwhile, the industrial services sector fell 1%. Ventia Services Group (NZE:VNT, ASX:VNT) shares fell 1% in recent trade.