Shares of Tech Mahindra hit over 3-1/2-year low as Q4 profit misses analysts' estimate.
The software services provider stock fell as much as 16.9 per cent to Rs 356.65, its lowest since October 2013.
The company posted a 33 per cent fall in consolidated profit for the March-quarter, missing analysts' estimate.
“Muted commentary and lack of confidence suggests that a pick-up in revenue and margin is likely skewed towards 2HFY18," according to Jefferies analysts.
The stock posted its biggest intraday percentage fall since February 2009.
The stock was down 12.2 per cent this year as of last close on Friday.