4 Indians in Fortune's '40 Under 40'

Raj Chetty:

Delhi born Chetty focused on economic mobility and is an "economist on a breakout streak."

Chetty, having been cited by Barack Obama for his research in the State of the Union address, in 2012, on the "value-added" for teachers, won him the prestigious MacArthur Foundation "genius grant."

Besides being listed on Fortune, Chetty in 2013 won the John Bates Clark Medal, better known as "baby Nobel." It is given to the best economists under the age of 40.

In his words "My biggest nightmare is always that someone is going to make an error in the thousands of lines of code that are involved in these projects and that feeds into some public policy thing," said the one who now leads a staff of 10 researchers.

Rahul Sharma:

Sharma who started Micromax as an IT software company hit upon a "winning formula" by making cheap cell phones with a month-long battery life.

Five years since he found the company, his handset sales have hiked from a mere 10,000 to 36 million and its revenue shot up to $500 million last year. Originally, the company sourced all its mobile phones from China however, since April 2014, they have started manufacturing mobile phones and tablets at their own facility.

In 2014, Micromax even surpassed Samsung to become the manufacturer shipping the most number of phones in a single quarter in India.

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