Maintaining its rising streak for the fifth session in a row, the benchmark Sensex on Tuesday rose by 82 points in opening trade on heavy buying by foreign funds amid expectations of strong corporate earnings.

The 30-share index, Sensex, moved up by 82.40 points or 0.45 per cent, to 16,823.70, with shares of auto, oil and gas, metal and healthcare sectors leading the rally. The Bombay Stock Exchange barometer had gained over 527 points in the past four sessions.