How Do Crypto ETFs Work?

A crypto ETF (exchange-traded fund) is an investment product that tracks the price of a cryptocurrency such as bitcoin or ether and trades on a regular stock exchange. Instead of buying coins and holding them in a wallet, investors buy shares of the fund through a brokerage account, while the fund’s assets are held by a custodian. It gives exposure to crypto prices without opening an exchange account or managing private keys.

In the United States, the Securities and Exchange Commission cleared the first spot bitcoin products to trade in January 2024, and spot ether products followed in July 2024. They quickly became one of the main routes for traditional investors into crypto.

How does a crypto ETF work?

A spot bitcoin ETF uses investors’ money to buy BTC and holds it with a custodian. The share price follows the value of the bitcoin the fund holds. Large institutions known as authorised participants can create new shares or redeem existing ones with the fund, and that creation and redemption process keeps the market price close to the fund’s net asset value (NAV).

As an investor, you simply buy and sell shares through your broker during exchange hours, like any other stock. You never touch the bitcoin itself.

Spot vs futures crypto ETFs

• Spot ETFs hold the cryptocurrency directly. After fees, their returns closely follow the coin’s price. BlackRock’s iShares Bitcoin Trust (IBIT) is an example.
• Futures ETFs hold bitcoin futures contracts instead of bitcoin. Contracts are rolled forward before they expire, and price differences between expiries can make returns drift away from spot over time. ProShares’ BITO, which began trading in October 2021, was the first US bitcoin ETF and is futures-based.
• Crypto equity ETFs hold shares of companies such as miners or exchanges. They do not track the price of bitcoin one-for-one.

Leveraged and inverse products target a multiple of the daily return and rebalance every day, so over longer periods their performance is not simply a multiple of bitcoin’s return.

Crypto ETF vs buying bitcoin directly

• Ownership: with an ETF you own fund shares. You cannot send BTC to an address, pay with it or withdraw it to your own crypto wallet.
• Custody: the fund’s custodian is responsible for custody. Buying directly, you keep coins on an exchange or in your own wallet.
• Trading hours: bitcoin trades 24/7; ETF shares only trade while the stock exchange is open.
• Costs: ETFs charge an annual expense ratio; buying directly involves exchange fees, spreads and network fees.
• Accounts and taxes: ETFs can often be held in existing brokerage or retirement accounts, which some investors find simpler for record-keeping.

If you want to use bitcoin on-chain, an ETF does not do that job. Our guide on how to buy bitcoin covers the direct route.

Why doesn’t one ETF share equal one bitcoin?

Each share represents a small slice of the fund’s total holdings. A hypothetical fund holding 100 BTC with 100,000 shares outstanding has 0.001 BTC per share. If bitcoin were at $100,000, NAV would be about $100 per share. Because the expense ratio is deducted from fund assets daily, the amount of BTC behind each share shrinks very slightly over time.

The market price can trade a little above NAV (a premium) or below it (a discount). For large, liquid spot ETFs that gap is usually small in normal conditions.

How much do crypto ETFs cost?

The main cost is the expense ratio. It is not billed separately but deducted from fund assets every day. On a $10,000 holding, a 0.25% expense ratio costs about $25 a year if the value stays flat. Add brokerage commissions, the bid-ask spread and, if you invest from another currency, conversion costs. Always check the current expense ratio on the issuer’s official page; several issuers launched with temporary fee waivers.

Advantages and limits of crypto ETFs

ETFs take operational risks such as lost private keys, transfers to the wrong network or a hacked exchange account off the investor’s plate. Trading within a regulated structure with institutional custody is a real advantage for many investors. Bitcoin’s volatility, however, comes along unchanged; an ETF changes only how you access it. The expense ratio is also deducted every year, and you give up the ability to use your crypto on-chain.

Weekends and price gaps

Bitcoin keeps trading at weekends, but ETF shares cannot be bought or sold while the exchange is closed. If bitcoin falls sharply on a Saturday, the ETF may open on Monday with a gap that reflects the move. Being able to watch the price does not mean you can exit your position at that moment.

How to read ETF flow data

Headlines about “net inflows into bitcoin ETFs” refer to the difference between shares created and shares redeemed on a given day. Net inflows generally require funds to buy BTC. Trading volume, by contrast, is existing shares changing hands between investors, which does not require the fund to buy anything. Do not read $1 billion of daily ETF volume as $1 billion of bitcoin purchases. Total assets under management change with both net flows and the bitcoin price.

What to check before choosing a crypto ETF

1. The underlying exposure: spot crypto, futures contracts or company shares?
2. The expense ratio and when any fee waiver ends.
3. The custodian and how assets are held.
4. Daily trading volume and the typical bid-ask spread.
5. The legal structure and risks set out in the prospectus.

Sources

• SEC Investor.gov: Bitcoin and Ether ETPs
• iShares Bitcoin Trust: product documents and features
• ProShares: Bitcoin product based on futures