Shares of brokerage firm ICICI Securities opened over 15% as the Board of Directors of ICICI Bank will meet on June 29 to consider a proposal for delisting its institutional and retail broking arm. Shree Cement shares hit a 10% lower circuit amid media reports that tax evasion to the tune of Rs 230 billion ($2.80 billion) has been found in tax searches at multiple locations of Shree Cement in Rajasthan.