The Sensex opened 16 points lower over its previous close at 6,324. The market was extremely range-bound in the first-half following a lacklustre trading activity in most of the counters.Hectic activity was witnessed since the mid-noon trades as strong buying in heavyweights lifted the index from the lower levels to a high of 6,359. The index, however, failed to hold on to gains and plunged deep into the red to touch a low of 6,258 as the markets came under the grip of a fresh selling pressure towards the closing hours.The Sensex finally signed off the session with a fall of 61 points at 6,278. The Nifty, too, after a mixed outing, lost 12 points to close at 1,935.Reliance shed 1.48% (Rs 8) to Rs 539 despite reporting strong earnings figure, while ONGC tumbled 1.91% (Rs 16) to Rs 832. Infosys, continuing from its overnight US fall, dropped 2% (Rs 39) to Rs 1,920. While Satyam was down 1.35% (Rs 6) at Rs 410, Wipro ended a per cent lower (Rs 6) at Rs 636.ICICI Bank tumbled 4.77% (Rs 19) to Rs 384. While SBI was down a per cent (Rs 4) at Rs 620, HDFC Bank ended with a small gain of Rs 2 at Rs 540.ACC fell 2.41% (Rs 9) to Rs 362. While Gujarat Ambuja lost 1.89% (Rs 8) to Rs 423, Grasim gained 1.28% (Rs 16) to Rs 1,235.HPCL slipped 1.57% (Rs 5) to Rs 321. While Reliance Energy fell 1.42% (Rs 7) to Rs 494, Tisco shed 2.47% (Rs 9) to Rs 350.Maruti plunged nearly 3% (Rs 12) to Rs 419. Hero Honda and Tata Motors ended with marginal losses at Rs 504 and Rs 432, respectively. Bajaj, however, moved up 1.58% (Rs 17) to Rs 1,100.HLL flared up 3.59% (Rs 5) to Rs 143, while ITC gained 1.57% (Rs 22) to Rs 1,401.Cipla added 4.49% (Rs 11) to Rs 255. While Dr. Reddy's dipped 1.49% (Rs 10) to Rs 656, Ranbaxy was down a per cent (Rs 7) at Rs 908.