PNB Housing Finance reported a 64% rise in consolidated net profit at Rs 279 crore in the quarter ending March 31 over Rs 170 crore in the year ago period. Net interest income rose 57% to Rs 593 crore, while net interest margin increased to 3.74%. Pre provision operating profit rose 32% year-on-year to Rs 487 crore, but was 22% lower sequentially. Its total loan portfolio grew 2% to Rs 59,273 crore at the end of March