The Sensex and Nifty traded on a flat note during the Tuesday morning trade session ahead of the key macro-economic data release.
Analysts said that caution ahead of the Consumer Price Index (CPI) and Index of Industrial Production (IIP) kept the investors from participation.
IT and consumer durables declined while the energy and power sector logged strong gains.
Investors will also be looking for the third quarter earning outcomes to be announced later in the day by companies like Coal India, Hindalco and Sun Pharmaceutical.
The Sensex of the BSE opened at 36,405.72 from its previous close at 36,395.03 on Monday.
At 9.19 am, the Sensex traded at 36,440.56 higher by 45.53 points or 0.13 per cent.
The Nifty of the National Stock Exchange (NSE) opened lower at 10,879.70 after closing at 10,888.80 on Monday.
The Nifty traded at 10,896.90 during the morning trade session, up 8.10 points and 0.07 per cent.
On Monday, both foreign institutional investors (FIIs) and the domestic institutional investors (DIIs) were net sellers.
FIIs stocks sold Rs 125.05 crore while the DIIs sold to the tune of Rs 232.55 crore.