Markets have turned volatile in morning deals as investors will be counting on the Federal Reserve to launch only a modest scaling back of stimulus later in the day.
At 1055 hours, the Sensex was up 19 points at 19,823 and the Nifty was flat at 5,853.
The gains were aided by Reliance Industries, ITC and HUL.
In the broader markets, the mid and smallcap indioces advanced and was up 0.3-0.5%.
On the sectoral indices, IT, Power and Auto indices were the only indices in the negative.