Infosys was trading 37.30 points down to 3,156.05 at 10.30 am. The company shares had opened at 3,280 from previous close of 3,193.35.
The Infosys stock was up 2.7 percent in pre-open trading, adding to a 6.9 per cent surge over the previous two sessions.
Sikka will take over on Aug. 1 from S.D. Shibulal, one of the engineers who founded Infosys, the company said in a statement to the stock exchanges.