New Delhi, May 24 -- The combined market valuation of 6 of the top-10 most valued firms surged by Rs.74,111.57 crore last week, with Reliance Industries emerging as the biggest gainer.

Last week, the BSE benchmark climbed 177.36 points, or 0.23 per cent.

"Markets ended the week with marginal gains amid a highly volatile and range-bound trading environment. Benchmark indices witnessed sharp intraday swings throughout the week, driven by persistent rupee weakness, mixed global cues, sectoral rotation, and continued uncertainty around inflation and interest rates," Ajit Mishra - SVP, Research, Religare Broking Ltd, said.

From the top-10 pack, Reliance Industries, ICICI Bank, Tata Consultancy Services (TCS), Bajaj Finance, Larsen & Toubro,...