Biography
Len Blavatnik is among the world's most closely watched billionaires from UNITED STATES, with an estimated fortune of $35.1B. The bulk of Len Blavatnik's wealth comes from Music, chemicals, closely tied to Music. Sir Leonard Valentinovich Blavatnik, born in Ukraine on June 14, 1957, is a British-American businessman and philanthropist. His diverse wealth stems from investments in music, chemicals, and other sectors. Blavatnik is the founder and chairman of Access Industries, a privately held industrial group with a global portfolio. His career began with early investments in Russian oil after emigrating to the United States from the Soviet Union in 1978. A Harvard Business School graduate, he has achieved significant success in various industries. His achievements include acquiring Warner Music Group and taking it public, and he was knighted in 2017 for his philanthropic endeavors, highlighting his commitment to giving back to society. Key career milestones include Founded Access Industries (1986); Graduated from Harvard Business School (1989); Acquired Warner Music Group (2011); Knighted by Queen Elizabeth II (2017). 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.