The zone of 10,850-10,880 will continue to act as a strong support zone for the index. However, a decisive breach of this support would result in a fall up to the level of 10,770. Stocks in news: Zen Technologies, Puravankara, Mahindra and Mahindra, Engineers India, BPCL, Kalpataru Power Transmission, NMDC, Indian Hotel, Tata Power, Bandhan Bank, Yes Bank and Bharti Airtel.