The 30-share index pared gains to trade 19.98 points, or 0.05 per cent, higher at 40,365.06.
Financial markets will resume trading on Wednesday, November 13.
The domestic stock market will remain shut on Tuesday, 12 November 2019, for Gurunanak Jayanti.
The 30-share index pared some losses to trade 4.57 points, or 0.01 per cent, lower at 40,319.04.
At the interbank foreign exchange, the rupee opened at 71.36 against the US dollar.
Coal India Ltd, Hindalco Industries and NMDC are among the major companies set to announce their earnings this week.
Moody's has changed India's outlook ratings to 'negative' from 'stable.'
The 30-share Sensex briefly turned positive to hit a fresh intra-day high of 40,749.33
In tandem with a weak trend in gold, silver prices also tumbled Rs 956 to Rs 45,498 per kg from Rs 46,454 per kg in the previous trade.
The fall in crude oil futures was mostly due to trimming of positions by traders in line with weak global cues, analysts said.