* Ratan Tata today retired as the chairman of Tata sons with Cyrus Mistry as new Chairman of the group.
* Infosys Ltd earns the worst performer status among blue chips, given the persistent concerns about global demand for software services.
* Indian lenders were the top performers among sectors, with the banking sub-index up nearly 57 percent. Real estate and fast-moving consumer goods (FMCG) were the next best sectoral performers.
* The RBI has held interest rates steady after a 50 basis points rate cut in April, but eased the cash reserve ratio by 175 basis points in 2012, helping banks improve margins.
* The central bank is also expected to cut the repo rate more aggressively next year.
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