Mastek is trading at INR 1801.80 (-5.24%), with the ex-dividend adjustment a possible contributor.

  • Mastek went ex-dividend on August 31, 2026, for a ₹16 final FY26 dividend; the NSE lists August 31 as the ex-date.
  • The dividend adjustment is substantially smaller than the reported move.
  • No new Mastek-specific earnings, contract, guidance or analyst announcement was identified; confidence is medium because the full decline remains unexplained.