Public sector lender Punjab National Bank (PNB) reported a 327 per cent year-on-year (YoY) rise in net profit at Rs 1,756 crore for the September quarter compared with Rs 411.27 crore in the corresponding quarter of the last fiscal. Net interest income (NII), the difference between the interest earned from lending activities and the interest paid, rose to Rs 9923 crore in the September quarter of the current fiscal.