Bank Nifty index fell for fifth straight session on October 26 and was trading near the psychologically important 54,000-mark with PSU banks leading the losses. Among individual counters, AU Small Finance Bank, IDFC First Bank led the losses by falling 7.5% and 1.2%, respectively, as a reaction to their Q2 results. At 1 pm on October 26, Bank Nifty was trading 0.5% lower at 54,029.25 while Nifty PSU Bank index was trading nearly 1% lower.