Rebalancing of the BSE's banking index, the S&P BSE Bankex, would now depend on the weightage of the index constituent spilling over 22 per cent.
BSE on Friday announced a change in the methodology of index calculation for the exchange's banking index. "Effective at the open of January 27, 2015, the index will follow modified market capitalization methodology, capping maximum weight of constituents to 22% at each rebalance," said the release from the exchange.