The stock plummeted 11.66 per cent to close at Rs 379.30 on BSE. During the day, it plunged 16.71 per cent to Rs 357.60 -- its 52-week low.
On NSE, it tumbled 11.58 per cent to end at Rs 379.45.
Following the sharp sell-off in the stock, the company's market valuation also declined by Rs 4,849.8 crore to Rs 36,972.20 crore.
Tech Mahindra on Friday reported a 31 per cent decline in its consolidated net profit to Rs 588 crore for the fourth quarter ended March 2017.
The company had posted a net profit of Rs 854.8 crore in the same period a year ago.
Consolidated revenue of Tech Mahindra increased by 8.8 per cent to Rs 7,495 crore in the reported quarter, from Rs 6,883.8 crore in the same period of 2015-16.