Sarath Ratanavadi
Energy · Bangkok
Net worth
$17.2B
Today
+$117K+0.00%Past month
+$736M+4.47%As of Nov 11, 2026, 1:50 PM EST
Sarath Ratanavadi is CEO of Gulf Development, one of Thailand's largest conglomerates with interests in telecommunications and digital infrastructure. Gulf Development was established in 2025 following a merger between power producer Gulf Energy Development and telecom giant InTouch Holdings, the biggest shareholder of Advanced Info Service (AIS). In 2024, Gulf Energy's joint venture with Binance launched a crypto exchange in Thailand. Gulf bought a stake in Kasikornbank in May 2025 and continued to raise its shares to become the second largest shareholder of Thailand's third largest bank by assets. Gulf's joint venture with Singtel and AIS to set up data centers in Thailand commenced operations in 2025.
Net worth over time
Principal holdings
3 positions| Company | Industry | Share | Value |
|---|---|---|---|
Gulf Development THAILAND: GULF-TH | Energy | 98.7% | $17.0B |
Private and other holdings | Energy | 1.3% | $222M |
i-Tail Corporation THAILAND: ITC-TH | Energy | 0.1% | $10M |
Also known for
- He went to college in Bangkok, then moved to the U.S. for a masters degree in engineering.
- Sarath is the former managing director of Thailand Golf Championship.
- Gulf Energy has a 70:30 joint venture with state-owned oil and gas firm PTT to build a $1.3 billion LNG terminal and port on Thailand's east coast.