ETF Revenue: Who Makes Money from ETFs

Direct answer: ETFs create revenue for multiple parties: the ETF manager earns an annual management fee (expense ratio) on assets, the index provider earns licensing fees for the benchmark, authorized participants profit from creation/redemption arbitrage, market makers earn bid-ask spreads on secondary market trades, brokers earn through order routing or account services, and custodians earn for holding ETF assets.

The ETF revenue ecosystem

An exchange-traded fund looks simple from the outside: you buy shares on an exchange, the shares track an index, and you pay a low annual fee. In practice, the ETF structure touches six to eight distinct business lines, each extracting fees for a different service. Understanding this ecosystem helps investors evaluate what they are actually paying and why fee competition has driven index ETF costs close to zero while other product types remain expensive.

The revenue flows from ETFs split into two categories: ongoing flows that accrue as long as the fund exists, and transaction-specific flows that arise only when shares are created, redeemed, or traded.

Layer 1: The ETF manager (expense ratio)

The ETF sponsor, the company that creates and manages the fund, earns the expense ratio. This fee is expressed as an annual percentage of assets under management but is deducted daily from the fund's net asset value. Shareholders never write a check; the NAV simply grows slightly more slowly than the underlying assets would justify.

For a broad index ETF like a total U.S. market fund, the expense ratio might be 0.03%. On $100 billion in AUM, that generates $30 million in annual gross revenue before costs. On a thematic ETF or an actively managed ETF, expense ratios of 0.5% to 1.0% are common, and on some alternative ETF structures they exceed 1.5%.

The expense ratio covers more than just the manager's profit. It funds the index licensing fee, fund administration, custodial costs, legal and compliance expenses, and the cost of maintaining the fund's registration. The net margin the sponsor retains depends on how efficiently those costs are managed at scale.

See: How ETF Companies Make Money

Layer 2: The index provider (licensing fee)

Most ETFs are passive vehicles that track a third-party index. The index provider, companies like S&P Dow Jones Indices, MSCI, FTSE Russell, or Bloomberg, licenses its benchmark to the ETF sponsor for an annual fee. The license fee is a contractual arrangement between the sponsor and the provider, typically calculated as a percentage of AUM in the tracking fund.

For a widely used index like the S&P 500, licensing fees are small in basis points terms but enormous in absolute dollars because of the scale of assets tracking the benchmark. Proprietary or niche indexes command higher percentage fees because there are fewer products to spread the index provider's development costs across.

See: How Index Providers Make Money

Layer 3: Authorized participants (creation/redemption arbitrage)

The ETF creation and redemption mechanism is the structural backbone of how ETF prices stay close to their net asset values. Only authorized participants, large institutional broker-dealers with signed agreements with the ETF manager, can create or redeem shares directly with the fund.

When an ETF trades at a premium to NAV, an AP can deliver a basket of the underlying securities to the ETF manager and receive newly created ETF shares, then sell those shares on the market at the higher market price, pocketing an arbitrage profit. When the ETF trades at a discount, the AP buys ETF shares on the open market and delivers them to the manager, receiving the underlying securities at their higher NAV value.

This arbitrage activity is not charity: APs earn from the spread between market price and NAV. The mechanism simultaneously keeps the ETF price anchored to NAV, which benefits ordinary shareholders.

See: Who Makes Money When an ETF Creates New Shares?, Who Makes Money When an ETF Redeems Shares?

Layer 4: Market makers (bid-ask spread)

On the secondary market, most retail investors buy and sell ETF shares not by interacting directly with the ETF manager but by trading with a market maker who quotes a continuous two-sided market. The market maker earns the bid-ask spread on each transaction.

For a liquid, large-cap equity ETF, the bid-ask spread may be one or two cents per share, representing a cost of perhaps 0.01% or less on the trade. For a less liquid ETF, a thematic fund with lower daily trading volume, or a fixed-income ETF, the spread may be wider. The spread is a cost to the investor and revenue to the market maker.

See: How Market Makers Make Money

Layer 5: Brokers (order routing and account services)

The broker through which an investor places an ETF order earns in several ways. In the U.S. retail market, many brokers receive payment for order flow (PFOF) from market makers for routing customer orders, earning a payment per share or per notional dollar of the order. Even brokers that have reduced or eliminated PFOF earn from cash sweep interest, margin lending, and premium services.

Some brokers also earn from their own proprietary ETFs by distributing them to clients and capturing the entire expense ratio internally. Fidelity's zero expense ratio index funds are funded in part by securities lending and the float on uninvested cash.

See: How Robinhood Makes Money, How Fidelity Makes Money, How Charles Schwab Makes Money

Layer 6: Custodians (safekeeping fees)

The ETF's underlying securities must be held by a custodian, a bank or trust company responsible for safekeeping, settlement, and corporate action processing. Institutional custodians like State Street, BNY Mellon, and J.P. Morgan earn custodial fees from the ETF trust. These fees are part of the expense ratio's total cost structure.

For Bitcoin ETFs and other alternative asset ETFs, specialized custodians may charge higher fees because the underlying assets require different storage and security infrastructure than traditional securities.

Layer 7: The exchange and clearinghouse (transaction fees)

When ETF shares trade on a stock exchange, the exchange charges a small transaction fee. The trade is then cleared and settled through the DTCC (Depository Trust and Clearing Corporation), which earns clearing fees and interest on collateral held during the settlement period.

These fees are tiny on a per-trade basis but significant in aggregate given the volume of ETF trading, which regularly accounts for a large share of total U.S. equity trading volume.

Special ETF structures and additional revenue layers

Some ETF structures create additional revenue participants beyond the standard model. Covered-call ETFs and other derivatives-based strategies require ongoing options market making activity, adding the options market maker's bid-ask spread as an additional cost layer. Bitcoin ETFs require specialized cryptocurrency custody, adding a layer of crypto-specific custodial fees.

• Who Makes Money When You Buy an ETF?
• Who Makes Money When You Sell an ETF?
• How ETF Companies Make Money
• Who Makes Money When an ETF Creates New Shares?
• Who Makes Money When an ETF Redeems Shares?
• Who Makes Money When You Own a Bitcoin ETF?
• Who Makes Money When You Own a Covered-Call ETF?

Frequently asked questions