Mumbai, July 22 -- Indian stock markets ended flat in a volatile session on Tuesday, as many investors opted to book profits amid ongoing quarterly results volatility, and investors remained cautious ahead of uncertainty surrounding the India-US trade agreement.

"This movement reflects the caution in the market, with many investors opting to book profits amid ongoing quarterly result volatility," according to Ashika Institutional Equities.

At the end of the trading session, the Sensex was down 13.53 points or 0.02 per cent at 82,186.81, and the Nifty was down 29.80 points or 0.12 per cent at 25,060.90.

All sectoral indices ended in red, highlighting broad-based weakness. Notably, Nifty Media and Nifty PSU Bank were among the worst hit....