IT major Infosys has commenced its Rs 18,000 crore share buyback program, approved by shareholders on November 6. The program will repurchase up to 10 crore shares at a fixed price of Rs 1,800 each, representing a premium of approximately 17% to the current market price. The buyback window is open from November 20 to November 26, with special provisions for small shareholders. Promoters, including Nandan M Nilekani and Sudha Murty, have decided not to participate.