Taking stock: Here's why Azim Premji's stock went up & Suresh Narayanan's went down this week

A round-up of those whose worth went up or down today: Azim Premji (Up), Zhou Xiaochuan (Down) and Suresh Narayanan.

Azim Premji, Chairman, Wipro; (Up)

Premji and HCL founder Shiv Nadar are the only two Indians on Forbes's list of top 20 richest people in the world of technology.

Zhou Xiaochuan, President, People's Bank of China; (Down)

China's central bank devalued its currency on Tuesday leading to its biggest singleday loss in 20 years.

Suresh Narayanan, CEO, Nestlé India; (Down)

The government filed a class action suit against Nestle India seeking `640-crore in damages for alleged unfair trade practices, misleading advertisements and false labeling.