Punjab National Bank (PNB) shares traded at Rs 123.92, up 6.55 per cent. Punjab National Bank shares were the top gainers among PSU banking stocks during the session, rising as much as 7.7 per cent earlier in the day following the bank’s Q2 results. Public sector banking stocks traded higher on Monday (October 19), led by PNB and Canara Bank, amid positive investor sentiment following the banks’ Q2 results.