Led by the shares of private sector banks, the Bombay Stock Exchange (BSE) Sensex managed to touch another peak in Thursday's trading.Languishing in red for most of the trading session, gains in private sector bank stocks such as ING Vvsya Bank and Karnataka Bank, and the buying in selective oil sector stocks helped the Sensex end at a new closing high of 6420.38, gaining 18.09 points from its previous close.The Nifty closed 4.50 points higher at 2033.20.Brokers said that the markets should consolidate at the current levels as the mood in the market is extremely cautious. Some kind of profit booking may also come in at current levels, the opined.While the current rally has been largely driven by the FII inflows, their exposure has come down in the past few days. On Tuesday, the FIIs were net buyers to the tune of Rs 182.40 crore, compared with Rs 199.70 crore on Monday.Among the private sector bank stocks, ING Vysya Bank and Karnaraka Bank registered huge gains. ING Vysya Bank was up 19.19 per cent to Rs 502.80, while Karnataka Bank stocks appreciated by 17.04 per cent to Rs 172.75 on aggressive buying after the boards of these banks approved attractively priced rights issue.A leading BSE broker said, "The buying has been limited to stocks specifics and the market is expected to see some correction, before a fresh rally."Shrugging off the sharp rise in global crude prices on Wednesday, the oil refinery stocks witnessed smart gains. The US light crude oil prices jumped $2.37 to settle at $44.19 a barrel on the New York Mercantile Exchange, following release of the weekly oil inventory data.IBP was up 5.85 per cent to Rs 606.30, IOC ended 1.23 per cent higher at Rs 510.60, Chennai Petroleum was up 2.44 per cent to Rs 229, BPCL was up 1.98 per cent to Rs 439.90, MRPL was up 1.69 per cent to Rs 51.20, and HPCL was up 1.38 per cent to Rs 378.70.In other sectors, L&T gained further ground to end 4.51 per cent higher at Rs 990.45 on Thursday.Cement pivotals also reported gains. ACC was up 2.41 per cent to Rs 320.90, Gujarat Ambuja Cements was up 1.27 per cent to Rs 387.30 and Grasim was up 0.85 per cent to Rs 1,250.70.Second-rung cement companies were major gainers on reports that cement prices in south India have increased by Rs 20-25 per bag in the last 2-3 weeks. Madras Cement was up 9.37 per cent to Rs 1,000.15, Mysore Cement was up 5.38 per cent to Rs 19.60, Dalmia Cement was up 5.95 per cent to Rs 307.30 and India Cement was up 2.95 per cent to Rs 48.90.