MUMBAI: Indian stock markets opened on a positive note on Tuesday, continuing their upward trend.

Both benchmark indices posted early gains, although investor sentiment remains cautious as markets await clarity on major global developments, particularly the Trump administration's proposed tax cuts bill in the US.

The Nifty 50 index opened at 25,551.35, registering a gain of 34.30 points or 0.13 per cent. The BSE Sensex rose by 79.20 points or 0.09 per cent to open at 83,685.66. Despite the early gains, the overall market tone remains watchful.