The company had clocked a net profit of Rs 101.38 crore in the same quarter of the last fiscal, it said in a regulatory filing.
Net income declined to Rs 573.34 crore during the July- September quarter of the current fiscal from Rs 585.30 crore in the year-ago period.
Expenses, however, remained slightly lower at Rs 460.65 crore in the second quarter of this fiscal as against Rs 463.45 crore in the same period of the last year.
Shares of PI Industries fell 1.02 per cent to settle at Rs 781.65 apiece on BSE today.