The 30-share index resumed higher at 29,316.58 against last close of 29,231.41 points. The barometer firmed up further to 29,362.96 on initial buying in early trade.
However, selling in bluechips like RIL, ITC and SBI in late trade dragged the index down to 28,913.16 before ending at 28,975.11, a loss of 256.30 points or 0.88 per cent. It had lost 230 points in previous trade on Friday last.
The 50-share Nifty of NSE also moved down by 78.65 points or 0.89 per cent to finish at 8,754.95.
"Markets started on a weak note ahead of the crucial Budget week dragged by Oil & Gas and Banking Sectors," HBJ Capital Senior Analyst Aamir Mir said.
Reliance Industries fell the most by 2.53 per cent among the Sensex stocks. GAIL fell by 2.22 per cent while Axis Bank lost 2.04 per cent.
HDFC, ITC, SBI and Infosys which fell up to 2 per cent were among major losers. Tata Steel, ONGC, Hindustan Unilever, Bajaj Auto, Tata Power and Hindalco also fell up to 1.87 per cent.
"Falling crude prices, bleak economic outlook by US Fed and relief amidst tensions over Greek economy, mixed sentiments amongst domestic market players due to constant flow of news and events related to union budget kept markets volatile today," said Hiren Dhakan, Associate Fund manager, Bonanza Portfolio.
The stock market may remain volatile this week ahead of the expiry of futures and options February contract on coming Thursday and presentation of budget on Saturday, brokers said.
