Rometty took over as IBM's CEO in January of 2012 after running Big Blue's sales operations. A longtime IBMer, Rometty made Fortune's list even before becoming CEO. The publication noted Thursday that Rometty is devoting resources to commercializing Watson, IBM's Jeopardy-playing supercomputer, as well as pushing into developing markets such as Africa.
Another familiar face on the list is Facebook Chief Operating Officer Sheryl Sandberg at No. 5. … Read more