Asia's super rich suddenly have lots of time on their hands.

The coronavirus has forced many of them to work from home, cancel travel and avoid the golf course. That's left them more time to trade stocks amid the turmoil, boosting revenue for Citigroup Inc. and other banks in the region.

"Clients are getting restless," said Jyrki Rauhio, South Asia head of private banking for Citigroup. "They're traveling less and have more time to look at the markets and review their portfolios."