The Intermediaries Who Own the RelationshipNarrow moat

BlackRock (BLK) — moat facet

A quarter of the base fees arrive through advisers and platforms BlackRock does not employ and cannot control.

BlackRock's most profitable channel is the one it has least control over. Retail is 10% of long-term assets and 25% of long-term base fees1, and retail investors are served principally through intermediaries: broker-dealers, banks, trust companies, insurance companies and independent financial advisers2.

Who does what in the retail chainBlackRockmanufactures the fund — 10% of AUM, 25% of feesPlatformsets the approved list — and often makes its ownAdviserpicks the fund — owns the clientInvestorholds it — never meets BlackRock
BlackRock's most profitable channel is the one where it controls the least. That is what the analytics and model tools are for.

BlackRock manufactures. Somebody else advises, holds the account, and owns the client. The adviser decides which fund goes in the portfolio; the platform decides which funds the adviser may choose from; and BlackRock's role is to be sufficiently compelling to both that its ticker appears on the list.

The composition makes it more valuable and more precarious. Roughly 70% of retail long-term assets are in active products, and active and index mutual funds together are about $860 billion, or 70% of the retail long-term book3. Active mutual funds sold through advisers carry the highest fee rates in the firm, and are also the most substitutable — an adviser replacing one active manager with another is doing something entirely routine.

BlackRock's response has been to get closer to the point of decision without owning it: analytics on the adviser's desktop, model portfolios, separately managed accounts, and the tooling that shapes how a portfolio is constructed in the first place. Its own description names the strategy — technology solutions, digital distribution tools and a shift toward portfolio construction are increasing the number of advisers and end-retail investors using its products4.

Rated narrow and narrowing. The channel is worth a great deal, the influence within it is real, and the leverage keeps consolidating into a smaller number of platforms that increasingly manufacture product themselves.

Moat trajectory: Narrowing

The wealth platforms that route BlackRock's best-paid money keep consolidating, and more of them now manufacture competing product. Influence at the point of decision is rising; control over the approved list is not.

The number that tests this moat
Reported
Retail assets in mutual funds
$860 billion, about 70%

The remainder is separately managed accounts and private funds. A book dominated by adviser-sold mutual funds is the highest-fee money BlackRock has and the money it has least control over.

Source: BlackRock Form 10-K, fiscal year 2025 ↗
References
  1. ReportedRetail is 10% of long-term assets and 25% of long-term base fees, and retail investors are served principally through intermediaries: broker-dealers, banks, trust companies, insurance companies and independent financial advisers
    BlackRock, Inc. Form 10-K, FY2025, Item 1 Business — Aladdin Enterprise, Aladdin Risk, Aladdin Wealth, eFront, Preqin and Cachematrix; "while Aladdin is a multi-asset system, the majority of positions managed on the platform are fixed income"; the March 2025 Preqin acquisition "added private markets data capabilities to its existing Aladdin and eFront workflow offerings, creating a preeminent private markets technology and data provider" and "as clients' private market allocations continue to grow, they will require more standardized and transparent data on their investments, creating an additional growth opportunity for Preqin"; index AUM within or above applicable tolerance of 95%, 96% and 99% across the disclosed periods; retail investors "are served principally through intermediaries, including broker-dealers, banks, trust companies, insurance companies and independent financial advisors" and "technology solutions, digital distribution tools and a shift toward portfolio construction are increasing the number of financial advisors and end-retail investors using BlackRock products" — FY2025 · publ. February 2026 · source ↗
  2. ReportedRetail is 10% of long-term assets and 25% of long-term base fees, and retail investors are served principally through intermediaries: broker-dealers, banks, trust companies, insurance companies and independent financial advisers
    BlackRock, Inc. Form 10-K, FY2025, Item 1 Business — Aladdin Enterprise, Aladdin Risk, Aladdin Wealth, eFront, Preqin and Cachematrix; "while Aladdin is a multi-asset system, the majority of positions managed on the platform are fixed income"; the March 2025 Preqin acquisition "added private markets data capabilities to its existing Aladdin and eFront workflow offerings, creating a preeminent private markets technology and data provider" and "as clients' private market allocations continue to grow, they will require more standardized and transparent data on their investments, creating an additional growth opportunity for Preqin"; index AUM within or above applicable tolerance of 95%, 96% and 99% across the disclosed periods; retail investors "are served principally through intermediaries, including broker-dealers, banks, trust companies, insurance companies and independent financial advisors" and "technology solutions, digital distribution tools and a shift toward portfolio construction are increasing the number of financial advisors and end-retail investors using BlackRock products" — FY2025 · publ. February 2026 · source ↗
  3. ReportedRoughly 70% of retail long-term assets are in active products, and active and index mutual funds together are about $860 billion, or 70% of the retail long-term book
    BlackRock, Inc. Form 10-K, FY2025, Item 1 Business — share of long-term AUM against share of long-term base fees and securities lending revenue: ETFs 42% of AUM and 45% of fees; institutional index $3.7 trillion, 29% of AUM and 6% of fees, with $119 billion of net outflows "driven primarily by a single client's partial redemptions"; institutional active 19% of AUM and 24% of fees; retail 10% of AUM and 25% of fees, of which active and index mutual funds are approximately $860 billion or 70% of retail long-term AUM and approximately 70% of retail long-term AUM is in active products; equity 61% of long-term AUM and 50% of long-term base fees. "Institutional non-ETF index assignments tend to be very large (multi-billion dollars) and typically reflect low fee rates. Net flows in institutional index products generally have a small impact on BlackRock's revenues and earnings." — FY2025 · publ. February 2026 · source ↗
  4. ReportedIts own description names the strategy — technology solutions, digital distribution tools and a shift toward portfolio construction are increasing the number of advisers and end-retail investors using its products
    BlackRock, Inc. Form 10-K, FY2025, Item 1 Business — Aladdin Enterprise, Aladdin Risk, Aladdin Wealth, eFront, Preqin and Cachematrix; "while Aladdin is a multi-asset system, the majority of positions managed on the platform are fixed income"; the March 2025 Preqin acquisition "added private markets data capabilities to its existing Aladdin and eFront workflow offerings, creating a preeminent private markets technology and data provider" and "as clients' private market allocations continue to grow, they will require more standardized and transparent data on their investments, creating an additional growth opportunity for Preqin"; index AUM within or above applicable tolerance of 95%, 96% and 99% across the disclosed periods; retail investors "are served principally through intermediaries, including broker-dealers, banks, trust companies, insurance companies and independent financial advisors" and "technology solutions, digital distribution tools and a shift toward portfolio construction are increasing the number of financial advisors and end-retail investors using BlackRock products" — FY2025 · publ. February 2026 · source ↗
Sources
Generated September 23, 2026