Foreign institutional investors turned buyers with net purchases of Rs 345 crore on Thursday, as per provisional stock exchange data.Reliance Industries was up 2.7%. The stock hit a 27-month high of Rs 1091.40 in intra-day trade today. Mukesh Ambani, chairman of RIL on September 01 announced the launch of Reliance Jio from September 05 with an aggressive pricing structure. Reliance Jio Infocomm is a subsidiary of RIL.The banking pack was led by private lenders with Axis Bank rising over 3% followed by ICICI Bank and HDFC Bank.In the auto pack, two-wheeler majors Bajaj Auto and Hero MotoCorp were up nearly 3% each while Tata Motors, M&M and Maruti Suzuki were up over 1%-2.5% each.Other gainers include, ITC, L&T and ONGC among others.Mortgage lender HDFC and IT major TCS were trading with marginal losses.Among other shares, Nava Bharat Ventures has rallied 12% to Rs 127 on the National Stock Exchange (NSE) in intra-day trade after Reliance Mutual Fund (MF) bought more than 4% stake in the electric utilities company for Rs 44 crore through open market.Den Networks has rallied 10% to Rs 80 on the BSE in early morning trade after the company said its board will meet on Tuesday, September 20 to consider a preferential issue to one of the leading global financial investors.State-owned oil marketing companies gained on the back of increase in petrol prices. Petrol price was hiked by 58 paisa a litre while diesel rate was cut by 31 paisa per litre. HPCL was up 1.8%, Bharat Petroleum was up 1.4% while Indian Oil Corporation gained 1.9%.