The two new billionaires have total asset value of $3 billion.
The fast-growing private airline has brought the total number of aircraft it ordered from Boeing to 200.
Oil prices have approached $70 a barrel and Vietjet Air will have to adjust its profit plan in case they exceed this threshold.
At the end of the first trading session in this April, the total market capitalization of VietJet Aviation Joint Stock Company, currently coded as VJC reached roughly $4.5 billion one year after its listing.
Vietjet Air has recently signed a strategic cooperation agreement worth $6.5 billion with Safran - CFM and a $800 million - financing agreement with GECAS France.
In Vietnam, still many billionaires are hidden as their business activities are not transparent and listed on bourse, according to Doctor Nguyen Van Thuan from the HoChiMinh City Marketing and Financial University.
Being a billionaire by owning billions of dollar of assets, many Vietnamese businesses use these assets to secure their loans or related companies at banks.
Besides Pham Nhat Vuong and Nguyen Thi Phuong Thao, there are two Vietnamese businessmen's names placed in the World’s Billionaires list 2018 just announced by the reputable Forbes.
HDBank, formally known as Ho Chi Minh City Development Joint Stock Commercial Bank, plans to list its shares on the Ho Chi Minh Stock Exchange (HOSE) on January 5 at a reference price of VND33,000 (US$1.46) per share.
VietJet Aviation Joint Stock Co. is in talks to become the first company in Vietnam to list its shares on a stock exchange overseas.