Masters in Business
Masters in Business

Samara Cohen on Global Markets Insights With BlackRock

Bloomberg Radio host Barry Ritholtz speaks to Samara Cohen, senior managing director at BlackRock Inc. and chief investment officer of the firm's ETF & Index Investments. She is also a member of BlackRock's Global Executive Committee and its investment and talent subcommittees. Cohen i

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Executive Summary: The conversation centers on BlackRock ETF and index chief Samara Cohn’s case that ETFs have improved market structure by increasing transparency, resilience, and access across equities, bonds, and now Bitcoin. She argues the line between passive and active is outdated, emphasizes ETFs’ role in investor reallocation and price discovery, and frames recent growth as driven by self-directed investors and portfolio diversification rather than simple market directional flows.

Main Topics: The rise of ETFs as market infrastructure (Priority: 5/5): Cohn argues ETFs are not just products but part of market plumbing that improves transparency, liquidity, and resilience, especially during stressed markets. Active vs. index is a continuum (Priority: 5/5): She rejects the term 'passive,' saying modern index strategies now include many active-like decisions, factor exposures, and outcome-oriented designs. Investor flows and sentiment versus market direction (Priority: 4/5): The discussion distinguishes between ETF flows as indicators of sentiment, allocation, and risk management, not necessarily predictors of market direction. Fixed income ETFs modernizing bond markets (Priority: 5/5): Cohn explains how bond ETFs brought transparency, price discovery, and electronic trading into a historically opaque, bilateral market. Expansion of self-directed investing (Priority: 4/5): She points to millions of new investor accounts and increased participation by individuals as a major structural shift in markets. Bitcoin ETF launch and crypto access (Priority: 5/5): Cohn describes the rationale for a Bitcoin ETF as a better access wrapper for investors seeking custody, convenience, and institutional-grade infrastructure. Governance, voting, and ownership misconceptions (Priority: 3/5): She clarifies that ETF managers are fiduciaries, not owners of the underlying shares, and discusses new voting-choice features for some clients.

Key Arguments: ETFs have made markets more transparent, resilient, and accessible by enabling intraday trading and clear holdings disclosure. Flow data is useful for sentiment and allocation analysis, but it should not be treated as a direct forecast of market direction. Fixed income ETFs have materially improved access and pricing in a market that historically lacked transparency and electronic trading. The term 'passive' is misleading because index products now involve many strategic choices and can function as active risk benchmarks. The growth in self-directed investors shows that technology and ETFs are bringing more people into capital markets in diversified ways. Bitcoin ETFs exist because many investors prefer an ETF wrapper for custody, simplicity, and total cost of ownership over direct crypto ownership. Large ETF providers do not 'own' the shares in a corporate-control sense; they hold them as fiduciaries on behalf of investors. ETF innovation supports both retail and institutional users, including active managers who use ETFs for cash equitization or beta exposure.

Data Points: BlackRock total assets managed: $10 trillion - Described as the scale of BlackRock in the introduction Assets overseen by Samara Cohn: About $6.6 trillion - Her responsibility within BlackRock’s ETF and index platform iShares ETF count: 1,300 ETFs - Used to illustrate the breadth of BlackRock’s ETF lineup Fixed-income ETF inflows in 2022: Over $200 billion - Cohn cited strong demand for bond ETFs during the 2022 rate-reset and bond selloff Worst bond market period referenced: 50 years - 2022 described as the worst bond market in half a century New individual investor accounts: About 40 million in the last two years - Used to support the rise of self-directed investors globally New accounts versus prior decade: More than the past decade combined - Highlights acceleration in individual participation U.S. market index coverage estimate: About 17% - Broad estimate of total equity market described as indexed rather than stock-selected ETF share of U.S. equity market: About 12% to 13% - Cohn argues the '50% of fund complex' statistic is misleading for market-wide equity exposure Imputed ETF flow share in U.S. stocks: About 5% to 6% - Used to show ETFs are not the dominant driver of price formation in the stock market ETF trading versus underlying bond trading example: ETF traded 90,000 times vs. top 10 bond holdings 35 times in a day - Illustrates price discovery and liquidity in bond ETFs during stress periods Bitcoin ETF AUM: A little over $5 billion - IBIT assets shortly after launch Bitcoin ETF launch timing: Second week of January - Used to emphasize how quickly the product scaled

Pivotal Quotes: "There is nothing passive about ETF and index investing." — Samara Cohn: Her core rebuttal to the idea that index investing is simple or inert "Markets are more transparent and resilient as a result of ETFs being in them than they have ever been in history." — Samara Cohn: Her central defense of ETFs as a force for better market structure "We are a fiduciary. The investors own those stocks." — Samara Cohn: Clarifying criticism that large index providers control corporate ownership

Implications: The transcript suggests ETFs will keep gaining share as an access layer for retail, advisors, and active managers, while expanding into new asset classes like crypto. Expect more product innovation, more debate over market concentration, and continued pressure on fees and transparency.

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About Masters in Business

Barry Ritholtz speaks with the people that shape markets, investing and business.

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