Shares of Aster DM Healthcare will be in focus as the multibagger stock will trade ex-dividend for a special dividend of Rs 118 per share on Tuesday (April 23). Aster DM Healthcare stock closed 1.32% lower at Rs 513.90 on BSE on Monday. Market cap of the firm fell to Rs 25,669 crore. The stock hit a record high of Rs 558.30 on April 15 after board of the firm approved special dividend on April 12. Total 7.96 lakh shares changed hands amounting to a turnover of Rs 41.62 crore on BSE.