Reuters Market Eye - Tech Mahindra Ltd slumps 5.1 percent after April-June-quarter net profit lags estimates.
The fall in the company's operating margins to 18.1 percent from 21.2 percent in Jan-March is also seen as disappointing.
Tech Mahindra shares had gained 19 percent compared to a 15 percent gain in the Sensex over previous three months.
As of 10:41 a.m., the stock was trading 3.5 percent lower.
($1 = 60.7250 rupees)
(Reporting by Aabhishek Vishnoi)