Market wrap: GAS, banks pull down stocks. The VN-Index had its biggest drop in five weeks on Wednesday, closing down 1.7%. GAS (-6.1%) fell for a second day and was the biggest contributor to the market’s sell-off as investors took profits after a 39% rally over the previous six weeks. Banks tumbled again, led by VCB (-3.5%), TCB (-2.6%), BID (-2.3%) and VPB (-2.6%).