He did business in Thailand, and was a shareholder in Siam City Bank, before moving to Hong Kong.
There, in 1963, he founded Stelux Holdings, whose business grew from producing Seiko watches.
Most of the family settled in Hong Kong under the name Wong, though Anant and Keeree moved back to Thailand during the 1980s–1990s for business opportunities.
Anant headed real estate developer Bangkok Land, while Keeree led Tanayong (later known as BTS Group Holdings, BTSG), the developer of Bangkok's first mass transit system, the BTS Skytrain.
Both companies suffered heavy losses from the 1997 Asian financial crisis, but the family managed to retain the businesses.