The Sensex is now down 189 points at 17,635.The NSE Nifty is down 65 points at 5,225.Bharti Airtel has plunged 2.7% to Rs 822. Hindalco and Tata Motors have tumbled 2.3% each to Rs 199 and Rs 695, respectively.Wipro and Tata Steel have slipped around 2% each to Rs 437 and Rs 807, respectively.ICICI Bank and ONGC are down nearly 2% each to Rs 1,083 and Rs 1,020, respectively.ITC has gained 1% at Rs 204.Out of 2,309 stocks traded so far, 1,238 have advanced, 999 have declined and 72 are unchanged.