Mastek is trading 5.02% down at INR 1,462.60 on October 28, with selling pressure linked to investor concerns following its Q2 FY27 results. - The October 23 results reported a 14.4% EBITDA margin, down 109 basis points sequentially. - 12-month backlog declined 7.7% sequentially; contemporaneous coverage linked investor concerns to these figures. - Available sources do not establish a separate October 28 announcement as the catalyst.