Infrastructure finance company IDFC's net profit rose by 21% to Rs. 469 crore while its revenue rose 25% to Rs. 1,975 crore for the third quarter from October-December 2012, compared to the corresponding period last year.

However, its stock ended up one of the major losers on the Bombay Stock Exchange (BSE) on Monday, falling 5.7% to Rs. 158.65 on the BSE.

Although its gross loan book increased by 22% at Rs. 54,104 crore, the company said its net interest margin fell to 4.2% from 4.3% and non-interest income decreased 28% to Rs. 519 crore in the financial year so far.

Meanwhile, IDFC's income from principal gains decreased  by 82% to Rs. 58 crore.