IT major Wipro has set June 16 as the record date for its proposed buyback of Rs 12,000 crore worth of shares. Shareholders have already approved the buyback of 26.97 crore shares on a proportionate basis through a tender offer, with the shares priced at Rs 445 per share. While the timeline for the buyback is yet to be announced, 15% of the shares - or 4 crore shares - in the buyback are reserved for retail investors, who can earn between 4% and 13%, depending on the extent of the buyback offer acceptance.