Market wrap: Stocks jump led by VHM and GAS. The VN-Index jumped in afternoon trading on Friday to close up 1.1%. However, the index was down two tenths of a percent for the week. VHM (+2.4%) was the leading contributor to the gain as it experienced its biggest single-day increase in a month. GAS (+3.2%) bounced back after falling 2.2% on Thursday. Energy and petroleum tickers were strong with POW (+1.9%), PVD (+2.4%), PPC (+2.5%) and PVS (+4.1%) posting gains.