Metal shares up on positive global trend in commodities. "The current weakness in the dollar is benefitting commodity prices, as investors globally go in for non-dollar assets," says analyst at foreign brokerage; adds, higher global metal prices also benefit Indian metal companies as local prices pegged international prices. Other news helping local metal shares are hike in overseas steel prices, consolidation trend in sector highlighted by Alcoa's pursuit of Alcan. Hindalco (500440.BY) +0.7% at INR146, Tata Steel (500470.BY) +1.7% at INR561.50; Sterlite (500900.BY) +0.8% at INR540.30.