The Spread Is the ProductWide moat
BlackRock (BLK) — moat facet
An institution pays the spread on every trade and the fee once a year, which is why the cheaper fund keeps losing to the more liquid one.
An institution rebalancing a $500 million allocation pays the bid-ask spread on the way in and again on the way out. At two basis points that is $200,000 for the round trip. At six, it is $600,000. The management fee on the same position, held for six months at three basis points, is $75,000.
This arithmetic is why the ETF fee war has been simultaneously ferocious and largely irrelevant to who wins. For a retail buyer holding for twenty years the annual fee dominates and the spread is noise. For the institutional and adviser flow that moves the largest funds, it is the other way around, and the ranking by total cost of ownership is a ranking by liquidity.
BlackRock is unusually well placed to exploit this because roughly half of its equity assets sit in international and emerging-market strategies1, where the underlying securities are genuinely harder to trade and the liquidity advantage of the wrapper is therefore largest. Those strategies also carry higher fee rates than US equity2. The categories where depth matters most are the categories that pay best — which is a happier arrangement than any planner could have designed.
The uncomfortable corollary is that BlackRock's revenue is levered to international markets in a way that a US-centric competitor's is not. When emerging markets are out of favour, the mix shifts toward the cheapest end of the book, and the effective fee rate falls without a single client leaving.
The arithmetic has not changed and will not: institutions pay the spread on every trade and the fee once a year. What moves is the mix of where BlackRock's assets sit, and roughly half of the equity book remains in international strategies where the liquidity advantage is largest.
Investors pay the trading spread on every trade and the management fee once a year, and the deepest funds have the tightest spreads. Base fees growing faster than rivals' shows the liquidity advantage paying.
Source: BlackRock Form 10-Q, Q2 2026 ↗- ReportedBlackRock is unusually well placed to exploit this because roughly half of its equity assets sit in international and emerging-market strategies, where the underlying securities are genuinely harder to trade and the liquidity...BlackRock, Inc. Form 10-K, FY2025, regulation and risk factors — "BlackRock competes with investment management firms, mutual fund complexes, insurance companies, banks, brokerage firms, financial technology providers and other financial institutions"; key competitive factors "include investment performance track records, the efficient delivery of beta for index products, investment style and discipline"; in 2025 the SEC clarified guidance on when a 5% shareholder's engagement "could lead to the shareholder being considered to hold shares with the 'purpose or effect of changing or influencing control of the issuer'", noting engagement that "exerts pressure on management to implement specific measures or changes to a policy" may be considered influencing control; on proxy voting reform, "in 2025, the SEC indicated that they are considering regulatory changes related to proxy voting" and "such reforms could increase regulatory scrutiny and uncertainty for BlackRock and affect its business or operating activities"; the EU Digital Operational Resilience Act, applicable in 2025, "focuses on direct regulation of providers and users of technology and data services" and "introduced additional governance, risk management, incident reporting, resilience testing and information sharing requirements" — FY2025 · publ. February 2026 · source ↗
- ReportedThose strategies also carry higher fee rates than US equityBlackRock, Inc. Form 10-K, FY2025, Item 1 Business — assets under management of $14.0 trillion at 31 December 2025 (long-term $12,960,786M plus cash management $1,080,732M); equity $7,793,875M, fixed income $3,272,021M, multi-asset $1,223,625M, alternatives $423,614M, digital assets $78,435M, currency and commodities $169,216M; five-year AUM CAGR 10%, alternatives 22%, multi-asset 13%, equity 12%, currency and commodities 17%, fixed income 4%; by style, active $3,432,743M, non-ETF index $4,060,333M, ETFs $5,467,710M; approximately 24,900 employees in more than 30 countries serving clients in over 100 — FY2025 · publ. February 2026 · source ↗