PTC India's scrip plummeted by 10.57 per cent to Rs 83.70 on the BSE.
On the NSE, it tumbled 10.86 per cent to Rs 83.65.
PTC India's net profit for the third quarter this fiscal plunged to Rs 7 crore due to one-time provision of Rs 33 crore. It had reported Rs 91 crore profit the year-ago period.
Total income from operations increased by 5 per cent to Rs 2,823.24 crore during the third quarter, from Rs 2,751.47 crore in the corresponding period of the last financial year, PTC India had said in a BSE filing yesterday.