The Sensex is now down 276 points at 10,077.Wipro and Reliance Communications have shed nearly 5% each to Rs 447 and Rs 237, respectively.ITC, Grasim, Larsen & Toubro and NTPC have dropped over 4% each to Rs 168, Rs 1,895, Rs 2,050 and Rs 109, respectively.Out of 2,410 stocks traded so far, 1,895 have declined, 451 have advanced and the rest are unchanged.