Biography
David Sun is among the world's most closely watched billionaires from UNITED STATES, with an estimated fortune of $25.2B. The bulk of David Sun's wealth comes from Computer hardware, closely tied to Computer hardware. David Sun is a Taiwanese-American billionaire businessman, best known as the co-founder and Chief Operating Officer (COO) of Kingston Technology Corporation. Born in Taiwan in 1951, Sun immigrated to the United States in 1977. His wealth stems primarily from his ownership stake in Kingston Technology, the world's largest independent manufacturer of memory products. Sun's career in computer hardware began with early roles in hardware design. He co-founded Kingston Technology in 1987 with John Tu, launching the company from a garage to address a shortage of memory chips. His achievements include building Kingston into a global leader. Sun is also recognized for his philanthropic efforts through the Sun Family Foundation. Key career milestones include Immigrated to the United States (1977); Co-founded Kingston Technology (1987); Repurchased Kingston Stake (1999); Sold HyperX (2021). This profile documents verified holdings, career milestones, and multi-year net worth history drawn from Forbes rankings, company filings where available, and our editorial methodology. Readers use it to understand how public markets, private company stakes, and major business bets shape one of the largest personal fortunes on record. Wealth estimates move with stock prices, funding rounds, and disclosed transactions—figures on this page are research estimates, not cash balances. We publish year-by-year net worth history when verified data exists, link to primary sources, and update profiles when Forbes Real-Time Billionaires or major filings change the picture materially. For investors and researchers, the most useful reading pairs the headline number with ownership structure, geography, sector exposure, and the multi-year history chart on this page—especially during volatile markets when single-day moves can shift rankings without any operational change at the underlying companies.