Cognizant has had the best stock market performance among the IT services and BPM (business process management) firms globally in the past ten years. The company's share price rose by 364 percent in this period. Which means, if you had invested USD 1,000 in Cognizant a decade ago, the same would have been worth USD 4,648, according to calculations by IT consulting and research firm HfS.

At the No. 2 spot is Canadian IT services player CGI, whose scrip rose 363 percent. CGI is followed by Accenture (328 percent), TCS (212 percent), Mindtree (209 percent), HCL (208 percent) and France-based Atos (158 percent).

After this are three pure-play BPM companies -- EXL, Genpact and WNS, which grew 156 percent, 125 percent and 115 percent respectively.

For Infosys, it is just a 47 percent increase, and for Wipro 27 percent. Tech Mahindra, Fujitsu, HP and Unisys bring up the rear, according to HfS. You would have been much better off putting your money in fixed deposits than in these companies.

The returns were calculated as of November. It takes into consideration HCL and Tech Mahindra's share bonus and stock split.

Phil Fersht, CEO of HfS Research, said Cognizant has kept its competitors on the edge with competitive pricing, lower margins, and aggressive and effective sales. – TOI