One reason to this is pressure on policy rates? Few months back, almost everybody expected a rate cut soon. But now most of the guys are asking whether CBSL can afford a rate cut soon, as rupee depreciated bit fast, though the reason is beyond CBSL control (USD outflows due to fears of early tapering in monthly bond purchases). There are few who are expecting an increase in policy rates tomorrow, though very very unlikely at this stage.
US Policy makers will decide at their Sept. 17-18 meeting whether the economy is strong enough to begin tapering $85 billion in monthly bond purchases. Most probably they will not announce the early tapering in this month as they are unclear about who will lead the FED in the future.
Will CBSL give us a hint tomorrow, on when they will go for the next rate cut? If it is happening at least in December, sentiments will clearly become possitive.