Blackstone IIFL Finance Deal: IIFL Finance promoters Nirmal Jain and R Venkataraman will invest ₹1,200 crore alongside Blackstone's proposed ₹5,000 crore investment. US alternative investment management company Blackstone is set to invest around ₹5,000 crore for a 15 per cent stake in IIFL Finance, according to a report in The Economic Times.