The index needs to move above the Tuesday session high of 11,670 to maintain the bullish momentum and it may extend its current upmove towards the levels of 11,725-11,735. On the downside, the level of 11,635 would act as an immediate support level for the index. Stocks in news: Tata Power, BHEL, KNR Construction, Sadbhav Infrastructure Project, TCS, NTPC, Vikas WSP.