MUMBAI: Indian stock markets opened flat on Tuesday as foreign portfolio investor (FPI) outflows continued to weigh on sentiment.

The Nifty 50 index opened at 22,963.65, marking a marginal gain of 4.15 points or 0.02 percent, while the BSE Sensex edged up by 31.98 points or 0.04 percent to open at 76,028.84.

Market experts noted that foreign outflows are unlikely to ease in the near term, keeping the markets under pressure. They expect a sideways to negative trading session for Indian equities.