Infosys has fixed November 14 as the record date for its upcoming equity share buyback, worth ₹18,000 crore, the biggest in its history. Its promoters and promoter group, including Nandan M Nilekani, Narayana Murthy and Sudha Murty, won't participate in the buyback. Infosys will buy 10 crore fully paid-up equity shares of a face value of ₹5 each.