Bitcoin ETFs explained: spot ETFs, European ETNs and CFDs compared

A spot bitcoin ETF is an exchange-traded fund that holds actual bitcoin with a custodian and issues shares that trade on a stock exchange, so an investor gets bitcoin price exposure through an ordinary brokerage account without handling private keys. The US Securities and Exchange Commission approved the first such funds on 10 January 2024, and they began trading the next day. In the EU, retail investors generally get similar exposure through exchange-traded notes (ETNs or ETPs) instead, which work differently in one important way: they are debt of the issuer.

This guide explains how these products are built, what they cost, why the EU market looks different from the US one, and how an ETF or ETN compares with buying coins or trading a bitcoin CFD. For background on the asset itself, start with Bitcoin explained.

Risk warning: bitcoin is highly volatile. Wrapping it in an ETF, ETN or CFD does not reduce price risk, and leveraged products such as CFDs can lose money quickly. Most retail CFD accounts lose money. You can lose all of the money you invest.

What "spot" means and why it mattered

Before 2024, the regulated US routes to bitcoin exposure were mostly indirect. CME bitcoin futures have traded since December 2017, and US funds that held those futures were allowed from 2021. A futures-based fund has to roll its contracts forward each month, and when later-dated futures trade above the nearer ones (a situation known as contango) that roll costs money over time. The fund can drift away from the bitcoin price for reasons unrelated to bitcoin itself.

A spot ETF avoids that problem by holding the coins. Each share is backed by a fixed amount of bitcoin, minus fees. The SEC had rejected spot applications for years, citing concerns about manipulation in the underlying market. After a federal appeals court ruled in 2023 that the SEC's rejection of Grayscale's application to convert its bitcoin trust into an ETF had not been adequately explained, the agency approved 11 spot bitcoin products on 10 January 2024. The SEC's chair stated at the time that approving the products was not an endorsement of bitcoin.

Spot ether ETFs followed: the SEC approved the necessary exchange rule changes in May 2024, and the funds began trading on 23 July 2024.

How a spot bitcoin ETF works

The structure has four moving parts.

• The fund (sponsor). The company that runs the ETF, sets the fee and publishes holdings.
• The custodian. A regulated firm that holds the fund's bitcoin, mostly in offline cold storage. Investors never touch private keys. Our guide to crypto wallets and custody explains why custody matters so much in crypto.
• Authorised participants. Large trading firms that can create new ETF shares by delivering cash or bitcoin to the fund, or redeem shares for cash or bitcoin. This is what keeps the share price close to the value of the bitcoin held.
• The stock exchange. Where ordinary investors buy and sell shares from each other during market hours.

Creation, redemption and the premium or discount

Every day the fund calculates its net asset value (NAV): the value of its bitcoin minus accrued fees, divided by shares outstanding. During trading hours the share price can move slightly above (a premium) or below (a discount) that value. If shares trade at a premium, authorised participants can create new shares and sell them; if they trade at a discount, they can buy shares and redeem them. That arbitrage normally keeps the gap small for the large funds. The ETFs explained guide walks through creation arbitrage step by step.

The gap can widen when the bitcoin market moves while the ETF's exchange is closed, or during very fast markets when market makers widen their quotes.

The fee shrinks the bitcoin per share

An ETF does not send you a fee invoice. It sells a small amount of its bitcoin over the year to pay the sponsor, so the bitcoin backing each share slowly declines.

Worked example: the fee over four years

Illustrative numbers only. Suppose one ETF share starts out backed by 0.000500 BTC and the fund charges 0.25% a year.

• After one year: 0.000500 x (1 - 0.0025) = 0.00049875 BTC per share.
• After four years: 0.000500 x 0.9975 x 0.9975 x 0.9975 x 0.9975, which is about 0.00049501 BTC per share.
• That is roughly 1.0% less bitcoin per share than at the start.

If bitcoin's price were unchanged over the four years, the share would be worth about 1% less. At a 1.5% annual fee, the same calculation leaves about 0.00047067 BTC per share after four years, about 5.9% less. Fee differences that look small on a factsheet add up over long holding periods.

Why EU investors usually cannot buy US bitcoin ETFs

If you are an EU retail investor, your broker will normally refuse to sell you a US-listed ETF, bitcoin or otherwise. Two sets of rules are behind that.

• PRIIPs. Packaged products sold to EU retail investors must come with a key information document (KID) in a prescribed format. US ETF sponsors generally do not produce one, so EU brokers cannot offer the funds to retail clients. Our guide on how to read a key information document explains what a KID shows.
• UCITS. Most European ETFs are UCITS funds, which may only hold certain eligible assets and must diversify. Single crypto assets are not eligible assets for a UCITS fund, so a European UCITS ETF that simply holds bitcoin is not available in the way a US spot ETF is.

Professional clients and some non-EU investors may have different access, and rules are different again in the UK. Check what your own broker and regulator allow.

European bitcoin ETNs and ETPs

What European exchanges list instead are exchange-traded products, often called ETPs or ETNs, that track bitcoin. Many are physically backed: the issuer holds bitcoin with a custodian to cover the notes it has issued. They trade on exchanges such as Xetra, Euronext or SIX during exchange hours, and they come with a KID, so EU retail investors can usually buy them.

The legal structure is the key difference:

• An ETF is a fund. Its assets are held for the fund's investors and are generally ring-fenced from the sponsor's own balance sheet.
• An ETN is a debt security. You hold a claim on the issuer, usually secured on the bitcoin it holds. If the issuer failed, you would depend on that security arrangement and the trustee or collateral agent to get value back.

Physically backed, collateralised ETNs are built to reduce that issuer risk, but it does not disappear. The prospectus explains how the collateral is held, who the custodian is, and what happens if the issuer defaults. If you cannot find or follow that information, treat it as a warning sign.

Some crypto ETPs are not physically backed, track a basket or index of coins, or apply leverage. Read the product name and KID carefully: a "2x" or "short" product behaves very differently from a plain tracker over time.

ETF or ETN vs coins vs CFD

The same bitcoin price exposure can be held four main ways. They differ on who holds the bitcoin, when you can trade, what it costs and what can go wrong.

Owning coins

You buy bitcoin on an exchange or app and either leave it there or move it to your own wallet.

• Custody: you, or the exchange if you leave it there.
• Hours: 24 hours a day, seven days a week.
• Costs: trading fees and the spread when you buy and sell, possibly withdrawal fees; no ongoing fee if you self-custody.
• Main risks: price, exchange failure, losing your keys, scams.

A spot ETF or a European ETN

You buy a share on a stock exchange through a securities account.

• Custody: the fund's or issuer's custodian.
• Hours: exchange hours only, typically weekdays.
• Costs: broker commission, the bid-ask spread on the share, currency conversion if the product is priced in another currency, and the annual fee.
• Main risks: price, weekend gaps, tracking differences, and for ETNs, issuer risk.

A bitcoin CFD

You open a leveraged contract with a broker that pays or charges the difference in price. You never own bitcoin. See what is a CFD for the mechanics.

• Custody: none; you have a contract with the broker.
• Hours: set by the broker; often near 24/7, sometimes with weekend closures or maintenance windows.
• Costs: spread, plus overnight financing on the full position value every night it is held.
• Leverage: capped at 2:1 for retail clients in the EU under ESMA-based rules, so you put up 50% margin. Leverage magnifies losses as well as gains.
• Main risks: price, margin close-out, financing costs, gaps if the broker closes at weekends, broker counterparty risk.

Worked example: one year of exposure, three ways

Illustrative numbers only. The rates below are assumptions for the example, not quotes from any product. Suppose you want 10,000 euros of bitcoin exposure for one year and the price ends the year exactly where it started.

ETN route. You buy 10,000 euros of a euro-denominated physically backed ETN.

• Broker commission: assume 5 euros to buy and 5 euros to sell, so 10 euros.
• Bid-ask spread on the ETN: assume 0.20% round trip, so 20 euros.
• Annual fee: assume 0.25%, so about 25 euros.
• Total: about 55 euros.

Coins route. You buy 10,000 euros of bitcoin on an exchange and sell it a year later.

• Trading fees and spread: assume 0.30% each way, so 30 euros in and about 30 euros out, 60 euros in total.
• Withdrawal to your own wallet and back to the exchange: assume about 10 euros in network and withdrawal fees.
• Total: about 70 euros, plus the time and risk of managing keys yourself.

CFD route. You open a 10,000 euro bitcoin CFD position at 2:1, so 5,000 euros of margin.

• Spread: assume 0.50% round trip, so 50 euros.
• Overnight financing: assume 0.05% of the position value per night, charged every night including weekends. That is 5 euros a night, and over 365 nights about 1,825 euros.
• Total: about 1,875 euros.

The exact figures vary a great deal between providers, but the shape of the result does not: for holding periods measured in months or years, nightly financing usually dominates the cost of a CFD. CFDs are built for short-term trading, and the crypto CFD overnight fees guide shows how to check the real rate. Over a few days, the comparison can come out the other way, because the CFD has no commission and you avoid the share's spread and conversion costs.

The ETN figure also leaves out one cost that does not appear on an invoice: if the ETN is priced in US dollars or Swiss francs, your broker may charge a currency conversion fee each way. Our guide to currency conversion and account base currency shows how much that can add.

Hours, weekends and gaps

Bitcoin trades every hour of every day. A US ETF or European ETN trades only when its stock exchange is open. When bitcoin moves on a Saturday, the share price catches up on Monday morning, often in a single jump.

Worked example: a weekend gap

Illustrative numbers only. An ETN closes on Friday at 50.00 euros, and you have a stop-loss order on it at 48.50 euros, 3% below. Over the weekend, bitcoin falls 8%. On Monday the ETN opens at about 46.00 euros. Your stop triggers at the open and fills near 46.00, not 48.50: a loss of about 8% instead of the 3% you planned.

The same thing happens on bitcoin CFDs at brokers that stop quoting at weekends, as explained in our guide to bitcoin trading hours and weekends and the broader gap risk and weekend risk guide. A coin owner can at least trade on the Saturday, although weekend liquidity is thinner.

What the US approval did and did not change

The approval made bitcoin exposure available inside retirement accounts, wealth platforms and ordinary brokerage accounts in the US, and the funds attracted large inflows in their first year. ETF flows are now one of the things market commentators watch, alongside interest rates and risk sentiment.

What it did not change:

• Volatility. Bitcoin still moves far more than shares or major currencies. See crypto volatility and risk.
• Correlation. Bitcoin has at times moved with technology shares and at other times on its own. A wrapper does not change that.
• The underlying market. ETF custodians and authorised participants still buy and sell bitcoin on the same exchanges and over-the-counter desks that everyone else uses.
• Regulatory protection of the asset. An ETF's investors are protected by securities law in how the fund is run, not against bitcoin falling.

How to evaluate a bitcoin ETF or ETN

If you are comparing products, work through the same questions for each one.

1. Structure. Is it a fund (ETF) or a debt security (ETN or ETP)? If an ETN, is it physically backed, and how is the collateral held?
2. Custodian. Who holds the bitcoin, and is that disclosed? Are holdings published?
3. Annual fee. Check the ongoing charge in the KID or factsheet, not just in marketing.
4. Tracking. Compare the product's performance with the bitcoin price over a full year, which captures both the fee and any other drag.
5. Liquidity. Look at the typical bid-ask spread and trading volume on the exchange you would use. Small products can have wide spreads.
6. Currency. Which currency is it priced in, and which exchange will your broker route to?
7. Leverage or shorting features. Make sure you are buying a plain tracker if that is what you want.
8. Tax treatment. ETFs, ETNs, coins and CFDs can be taxed differently depending on where you live. Check local rules or ask a tax adviser.

Common mistakes

• Assuming an ETN is the same as an ETF. An ETN carries issuer risk. Read how the collateral works.
• Ignoring the annual fee. It looks small, but it compounds over years and is taken whether or not the price rises.
• Using a CFD for long-term holding. Nightly financing on the full position value can cost more in a year than the other routes cost in a decade. CFDs suit short-term trading, and even then most retail accounts lose money.
• Placing tight stops over weekends on exchange-traded products. A Monday gap can fill your stop well below its level.
• Buying a leveraged or inverse crypto ETP by mistake. These reset daily and can drift far from a simple multiple of bitcoin's move over longer periods.
• Thinking regulation protects the price. Approval of the product is about disclosure and structure, not about whether bitcoin is a good investment.
• Forgetting currency risk. A dollar-priced product exposes a euro investor to EUR/USD as well as bitcoin.

Frequently asked questions

When were spot bitcoin ETFs approved in the US?

The SEC approved 11 spot bitcoin exchange-traded products on 10 January 2024, and trading began on 11 January 2024. Spot ether ETFs began trading on 23 July 2024.

Can I buy a US spot bitcoin ETF from the EU?

Usually not as a retail client. EU brokers can only offer packaged products to retail investors if a PRIIPs key information document is available, and US sponsors generally do not provide one. EU investors typically use European-listed bitcoin ETNs or ETPs instead.

Is a bitcoin ETN safer than holding bitcoin myself?

It removes the risk of losing your own keys or being scammed out of them, and you hold it in a regulated securities account. In exchange you take on issuer and custodian risk, pay an annual fee, and can only trade during exchange hours. The bitcoin price risk is the same.

Does a bitcoin ETF pay dividends or interest?

No. A spot bitcoin ETF holds bitcoin, which produces no income. The fund sells a small amount of bitcoin to pay its fee, so the bitcoin behind each share falls slightly over time.

Is a bitcoin CFD cheaper than a bitcoin ETF?

For a few days, it can be, because there is no commission or annual fee. For holding periods of weeks or longer, overnight financing on the full position value usually makes the CFD far more expensive. Use the position size calculator and your broker's financing rate to check before you trade.

Do bitcoin ETFs trade at weekends?

No. They trade only when their stock exchange is open. Bitcoin itself trades all weekend, so the ETF often opens on Monday at a different level from Friday's close.