The Bombay Stock Exchanges’s (BSE) benchmark 30-share Sensitive Index (Sensex) rose 1.02 per cent today as banks gained on easing concerns of a global credit squeeze and further domestic interest rate rises, but uncertainty remained after a volatile week in global markets.The Sensex added 152.70 points to close at 15,138.40, with 24 components rising, but still ended down 0.63 per cent on the week — its second consecutive weekly fall. The index dropped 3.96 per cent on Wednesday, its biggest single day loss in four months, as stocks were caught in a world-wide sell-off of equities.“A volatile market gives a lot opportunities also. You can pick a stock or a sector, which you had missed earlier. So wherever we see a good value-buying opportunity, we are buying,” said BoB Asset Management fund manager Dipak Acharya.The country’s top lender, State Bank of India gained 2.7 per cent, while second largest bank ICICI Bank rose 1.7 per cent.