Nykaa parent FSN E-Commerce Ventures Ltd. and Eternal Ltd. witnessed high trading activity ahead of MSCI rebalancing.MSCI's May rebalancing event involves adjustments to various indices, including Nykaa being added to the MSCI Global Standard Index.The MSCI India Domestic Index saw additions of Coromandel and GMR Airports Ltd., while exclusion of Sona BLW Precision Forgings Ltd. occurred.The reduction of Zomato's weightage in MSCI indices is expected to trigger an outflow of $460 million by or on May 30.