Taking cues from the bearish US markets, Asian stocks started the session on a negative note. The Nikkei 225 index tumbled 1.3 per cent, while Hang Seng Index slipped 0.3 per cent. Both the Nifty and the Sensex started the session on a weak note. The Nifty futures contract opened at 9,977 levels. After marking an intra-day low of 9,950 levels, the contract turned volatile and recorded an int...