In a survey by Money and Banking magazine, as of September 30, the value of his 19.1-per-cent stake in Bangkok Dusit Medical Services was Bt54.78 billion, of 0.8 per cent in Nonthavej Hospital Bt42.46 million and of 18.2 per cent of Bangkok Airways Bt7.5 billion.
The carrier was listed in November last year.
In the survey, Prasert remains the richest millionaire in stocks for the third successive year.
He is also the 663rd-richest billionaire in the world and the fifth-richest in Thailand in Forbes’ ranking.
His fortune rose despite the gloomy condition in the Stock Exchange of Thailand.
In an overview of Thai stock millionaires as of September 30, 6,712 individuals were holding equity of more than 0.5 per cent in each listed company. The combined value of the stocks was Bt1.8 trillion, falling 1.6 per cent, or Bt29.96 billion, from last year.
Their combined dividends also declined by 0.6 per cent to Bt51.49 billion from last year.
The millionaires’ wealth this year eroded considerably as the SET Index experienced a turbulent year.
In the individual ranking, Thongma Vijitpongpun, vice chairman and founder of Pruksa Real Estate, was second with stock holdings worth Bt35 billion, followed by Sompoch Ahunai, chief executive officer of Energy Absolute, with holdings worth Bt32 billion.
In the Thai magazine’s survey, the Prasarttong-Osoth family also became the richest in the country, with family-owned stocks surging 34.9 per cent to Bt88 billion from last year.
Last year’s champion, the Chirathivat family, was ranked second, with holdings slipping 15.6 per cent to Bt58.55 billion.
Ranked third is the Kanjanapas, with holdings decreasing 8.8 per cent to Bt45 billion.