The index provider has also revised the stock selection criteria for these indices.
"Effective April 2, 2018, Nifty Free float Midcap 100 and Nifty Free float Smallcap 100 indices will be renamed as Nifty Midcap 100 and Nifty Smallcap 100 respectively," IISL said in a statement today.
At the same time, IISL said it would discontinue two other indices, Nifty Full Midcap 100 and Nifty Full Smallcap 100, from April 2.
Currently, companies within the range of 75th to 90th percentile based on average freefloat market capitalisation, are ranked in descending order of average daily turnover for the last six months for final selection of midcap 100 stocks.
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Similarly, the Nifty Smallcap 100 index would include all the companies from Nifty Smallcap 50 and the remainder would be selected based on average daily turnover from top 150 firms selected based on full market capitalisation from Nifty Smallcap 250 index.
Moreover, IISL has also changed the selection criteria for Nifty 200 stocks, which represents the combined movement in large and midcap securities.
Under the revised criteria, the constituents of the index would have all the companies forming part of Nifty 100 and Nifty Midcap 100 index (Nifty Free float Midcap 100 index).
As per the existing norm, the Nifty 200 includes firms forming part of Nifty 100 and Nifty Full Midcap 100 index.
"The changes in the index composition shall come into effect from April 2, 2018," it added.
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