Shares of Punjab & Sind Bank hit an over four-year high at Rs 40.75, as they rallied 10 per cent on the BSE in Tuesday’s intra-day trade amid heavy volumes. The stock of public sector undertaking (PSU) bank traded higher for the fourth straight day, surging 42 per cent during the period. In the past nine trading days, it has zoomed 96 per cent from Rs 20.80 on November 30.