In an otherwise narrow range of trade, the 30-share index resumed lower but recovered at mid-session on firm Asian cues as well as positive European openings, reaching 20,264.90, the highest level since the close of 20,286.12 on May 17.
After L&T's Q1 results were announced, the index came off the intra-day high and settled at 20,159.12, a gain of 9.27 points, or 0.05 per cent -- its highest close since 20,215.40 on May 30. The Sensex has gained 307.89 points, or 1.55 per cent, in the past four sessions.
L&T posted a 12.46 per cent decline in standalone net profit for the quarter ended June 30 on subdued revenue growth and a drop in other income.
Marketmen said the results were disappointing, particularly growth in revenue and order book. The L&T counter accounted for a drop of 70.74 points on the Sensex.
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"Sentiment was hit after capital goods major Larsen & Toubro registered lower-than-expected Q1 FY14 earnings and worst margins in over 12 years," said Amar Ambani, head of research at India Infoline.
Refinery and power segments were under selling pressure, while auto, banking and IT sectors were in demand.
Energy major RIL ended a seven-day rally, dropping 1.59 per cent to Rs 908.50. The company posted a 19 per cent jump in first-quarter net profit on Friday, mostly on the back of higher other income.