It reached VND278,600 (US$10.57) before closing the day at VND269,900, up 3.6% from Friday, and 565% since the start of the year.

A jump in the share prices of Vingroup’s real estate and resort subsidiaries Vinhomes and Vinpearl also meant Vietnam’s benchmark VN-Index regained the key 1,700-point level.

Vingroup’s market capitalization has surpassed VND1 quadrillion and leads the market at 2.2 times the cap of the second-largest company, Vietcombank.

Forbes data shows that Vuong ranked fifth among the world’s biggest gainers on Monday. His net worth now stands at around $24.3 billion, making him the world’s 94th richest individual.

Pham Nhat Vuong was recognized by Forbes in 2013 as Vietnam’s first billionaire when he was worth about $1.5 billion and ranked 974th globally.

Vingroup’s ecosystem has been expanding rapidly. In October Vuong and his family established several companies in a range of sectors, including VinMetal (steel manufacturing), Vin New Horizon (eldercare) and V-Film (film production).

In November he founded VinSpace to enter aircraft manufacturing, spacecraft and telecommunications satellite production and air cargo transport.