New Delhi, March 8 -- Equity benchmark indices Sensex and Nifty surrendered early gains to close almost flat in a volatile trade on Friday as uncertainties over the global trade war sapped investors' risk appetite. Benchmark index Nifty 50 logged its best week in three months, led by heavyweight Reliance Industries and metal stocks, as losses in the past three weeks triggered bargain buying.

On the day, the Nifty 50 rose 0.03% to 22,622.5, while the BSE Sensex ended 0.01% lower at 74,332.58.

The Nifty rose about 1.9% this week, its best in three months, while the Sensex gained 1.6% and logged its highest weekly gains since January-end.

Besides, a bearish trend in global markets and persistent foreign fund outflows also hit investor sen...