Since May 22, when the announcement was made by BSE, shares of Tata Power have lost nearly 5%, while Lupin gained 4.6%.
Besides, a host of changes would also be effective in various other indices, where Adani Power would be dropped from the BSE 100 index.
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The BSE-100, an index of the top-100 listed companies in the country, would see Aurobindo Pharma and Tata Motors (DVR) coming in, while BSE-200 would get five new entries -- Ajanta Pharma, Suzlon Energy, Dewan Housing, NCC India and Tata Motors (DVR).
Those moving out of BSE-100 include Sanofi India, Hindustan Copper, Amtek Auto and Jaiprakash Power Ventures.
The reconstitution in BSE indices will be effective from June 22, BSE had said in a statement last month.
Further, a host of changes would also be effective in various other indices such as BSE 200 and BSE 500.