Shares of Smartlink Network Systems will remain in focus, as Wednesday is the cut-off date for its shareholders to participate in the proposed buyback offer. Smartlink plans to buy a maximum of 74.545 lakh shares at a price not exceeding ₹110 a share totalling ₹82 crore. The offer is on a proportionate basis through the tender offer route. Promoters and promoter group company will also participate in the buyback. Thursday will be the ex-date for the offer.