Tags optimism Shares surge on rising investor optimism Thursday, Apr 27, 2017 Shares traded higher on Thursday morning as rising investor optimism put the market back on track. Local business sentiment falls Thursday, Jul 25, 2013 Business optimism in Viet Nam ped by a third in the second quarter to 14 per cent, one of the lowest rates in the region, according to a quarterly global business survey by Grant Thornton.