The market regulator has put on hold the approval of the initial public offering of Aditya Birla Asset Management Company Ltd.The company’s draft red herring prospectus has been put in abeyance, according to information on the website of the Securities and Exchange Board of India. The regulator hasn’t cited any reason and emailed queries to SEBI remained unanswered.The IPO approval has been put on hold for 30 days since SEBI has issu...