New Delhi, May 26 -- The Indian stock market benchmark indices traded largely flat on Tuesday, tracking mixed global cues amid lingering uncertainty over the US-Iran peace talks. The frontline indices - Sensex and Nifty 50 - fluctuated between gains and losses in a lacklustre trading session.

However, broader markets outperformed the benchmark indices, supported by gains in midcap and smallcap stocks. The Nifty Midcap 100 index touched a record high, with the majority of its constituents trading in positive territory.

The Nifty Smallcap 100 index rose as much as 1.04% to 18,393.10, while the Nifty Midcap 100 index gained up to 0.57% to hit a fresh all-time high of 62,324.20.

On a year-to-date (YTD) basis, the Nifty Midcap 100 index has...