Mark Wiedman

Mark Wiedman served as the Global Head of iShares at BlackRock, where he oversaw the growth of the world's largest ETF franchise. iShares, which BlackRock acquired from Barclays Global Investors in 2009 for approximately $13.5 billion, grew under his leadership to manage over $3 trillion in assets across hundreds of ETFs globally. The growth of iShares during this period represented one of the most dramatic shifts in financial markets — the mass migration of investment assets from actively managed mutual funds to passive index products. Wiedman subsequently took on a broader strategy and development role at BlackRock. His work helped cement BlackRock's position as the world's largest asset manager and made iShares the standard infrastructure for passive investing globally, with implications for market structure, corporate governance, and price discovery.