Mirroring the strength in the global markets the Sensex is likely to open on a positive note. The index is likely to continue its upward journey as the FIIs have bought in the derviatives segment and BSE provisional figures also suggest that they were net buyers in yesterday's trading.The index is likely to face resistance around 11,975-12,000-12,025 levels. On the downside, the index may find support around 11,810-11,785-11,760 levels.According to market analyst Shah, the market is likely to be very volatile today as the bulls and bears are keen on a intense fight. The index is likely to swing in a range of 11,800 to 12,000.Stocks to watch today are Punj Loyd, ITC, IPCL, MTNL and MphasiS BFL, says Shah. He adds that one may buy NDTV and Dena Bank for investment purpose.