Delta surpasses US$100bn market value on Thailand Stock Exchange

2026-02-25 - 03:13

BANGKOK — 24 February 2026, Thailand’s biggest listed company has crossed a milestone never before reached on the local stock market, with Delta Electronics (Thailand) PCL surpassing a market value of US$100 billion. Delta has surged in recent months, lifting the company’s market value to levels never before seen on the Stock Exchange of Thailand (SET). At its recent peak, Delta’s market capitalisation surpassed US$100 billion, making it the largest publicly traded company in Thailand by a wide margin. To put that into perspective: Delta is now worth more than twice as much as some of Thailand’s other corporate giants, including energy and telecom heavyweights that have traditionally dominated the exchange. What does Delta actually do? Despite its stock market dominance, Delta is not a household name for many Thais. The company manufactures power management systems and electronic components used in data centres, electric vehicles, industrial automation and telecommunications infrastructure. Its cooling systems and power supplies are particularly important for large data centres that support artificial intelligence (AI) services and cloud computing. As global demand for AI infrastructure has accelerated, investors have poured money into companies seen as supplying critical hardware behind that expansion — and Delta has been one of the beneficiaries. Why has the stock jumped? Part of the recent rally followed a ruling by the Supreme Court of the United States that reduced uncertainty surrounding certain tariff measures affecting global trade. The decision eased concerns that higher trade barriers could disrupt supply chains for technology manufacturers with international exposure. The climb has been supported by strong earnings. In the fourth quarter of 2025, Delta reported revenue of US$1.8 billion, up 50% from a year earlier, while net profit surged 252% to US$224 million. For the full year, revenue reached US$6.0 billion and net profit rose 42% to US$754 million. Sales Revenue Source: Delta Electronics (Thailand) PCL. Q1/25 Press Announcement Delta generates a significant portion of its revenue overseas, so developments in U.S. trade policy can have an outsized impact on investor sentiment toward the stock. Shares have climbed sharply this year, building on strong gains in 2025. The rise has helped drive trading activity on the SET and, at times, influenced the direction of Thailand’s benchmark index due to Delta’s heavy weighting. Regulatory scrutiny and volatility Delta’s dramatic swings have also drawn attention from the SET’s market regulators. The recent surge in Delta’s share price has triggered automatic safeguards from the SET. Earlier this week, they placed a derivative warrant linked to Delta under its Level 1 market surveillance measures, a routine step taken when trading activity becomes unusually heavy or volatile. Under those rules, investors must pay fully in cash to trade the flagged security, rather than buying on credit. The measures are temporary and are part of the exchange’s standard toolkit to cool excessive speculation and keep trading orderly. While they do not amount to a trading halt, they can influence short-term activity by limiting leverage during periods of sharp price swings. Delta has been subject to similar oversight in the past when its shares moved rapidly. The exchange says such surveillance tools are designed to keep trading orderly and protect investors during sharp price swings. In practice, however, tighter trading rules can also slow momentum in stocks that are rising quickly, particularly those attracting heavy speculative interest. A symbol of changing market leadership For decades, Thailand’s largest listed firms were dominated by energy, banking and telecommunications groups. Delta’s ascent reflects a shift toward technology-linked manufacturing and global supply chains. Its rise also underscores how Thai-listed companies are increasingly tied to international economic forces. Court rulings in Washington, AI demand in Silicon Valley and semiconductor supply chains in Asia can now move the Thai stock market within hours. Whether Delta can maintain its lead will depend on continued earnings growth and sustained global demand for AI-related infrastructure. For now, however, the company stands as the clearest example of how rapidly investor priorities and Thailand’s market landscape can change. The SET building on Ratchadaphisek Road in Bangkok’s Din Daeng district.