On 11 January 2024, the first day US spot bitcoin ETFs traded, investors put a net 655.3 million dollars into them, according to the daily table kept by Farside Investors. On the same day 95.1 million dollars left the Grayscale Bitcoin Trust, a fund that had existed for years before it became an ETF that morning. In the five trading days from 2 to 6 November 2026, the same family of funds lost a net 1.28 billion dollars, 1.21 billion of it from BlackRock’s iShares Bitcoin Trust (IBIT), according to SoSoValue’s data; Farside’s daily rows give the same totals. IBIT still held about 60.7 billion dollars of assets on 6 November 2026, according to its issuer’s page.
A bitcoin ETF is the product behind those numbers. It is a share listed on a stock exchange whose value follows the price of bitcoin, bought and sold through an ordinary brokerage account like a share of Apple or an index fund. A product the US Securities and Exchange Commission (SEC) refused for years is now large enough that its weekly flows are read as a market signal, sometimes wrongly.
This lesson follows the previous lesson on bitcoin’s energy debate. It starts in plain words and then looks at the plumbing, from the custodian’s vault to the fee table and the European versions. If bitcoin itself is new to you, our guide to what bitcoin is covers the network, the 21 million cap and how coins move. Nothing here is investment advice.
A share that tracks bitcoin, not bitcoin in your pocket
ETF stands for exchange-traded fund: a blockchain that runs exactly as written when it is called, holding and moving funds according to its code, without an intermediary able to change the outcome.">smart contract holding reserves of two or more tokens, supplied by users, that a decentralized exchange uses to execute trades automatically at a price set by a formula.">pool of assets whose shares trade on a stock exchange all day at market prices. Our glossary entry on ETFs covers the general idea. A spot bitcoin ETF holds actual bitcoin, bought on the market and kept by a specialist company. Each share represents a slice of that pile, minus a yearly fee. When bitcoin’s price rises by 5 percent, the value of the bitcoin behind each share rises by about 5 percent too.
Several words appear around these products. The sponsor is the firm that runs the fund, BlackRock or Fidelity for example, and collects the fee. The custodian is the company that stores the fund’s bitcoin. The net asset value (NAV) is the value of the fund’s bitcoin and cash, divided by the number of shares. The market price of a share can sit slightly above the NAV (a premium) or below it (a discount).
Strictly speaking, the US funds are not ETFs in the legal sense. The SEC calls them exchange-traded products (ETPs), and they are set up as trusts. iShares says so plainly in IBIT’s annual report for 2025: “The Trust is not registered as an investment company for purposes of U.S. federal securities laws”. The practical consequence is that the protections of the Investment Company Act of 1940, which covers mutual funds and most ordinary ETFs, do not apply. The word ETF is used everywhere anyway, including in the funds’ own names.
Two other labels matter mostly in Europe. An ETN, exchange-traded note, is a debt security: the issuer owes you an amount linked to the bitcoin price. ETP is the umbrella word that covers ETFs, ETNs and similar products. With an ETN you are lending to the issuer, which is a different risk from owning a slice of a fund.
What you do not get matters as much. A fund share gives you no private key, no bitcoin address and no way to send coins to a friend or pay a merchant. You cannot normally ask the fund to hand you bitcoin: only large firms called authorised participants deal with the fund directly, as the mechanics section shows. You own a security that tracks bitcoin. You do not own bitcoin.
More than 20 refusals, then a court case: how the funds arrived
Before 2021: the SEC kept saying no
Applications for a fund holding bitcoin directly piled up for years. In his statement of 10 January 2024, then SEC Chair Gary Gensler wrote that, from 2018 under his predecessor Jay Clayton through March 2023, the Commission disapproved more than 20 exchange rule filings for spot bitcoin ETPs. Each refusal was of a stock exchange’s request to list such a fund, since an exchange needs the SEC’s approval of a rule change before listing a new kind of product.
October 2021: a futures fund comes first
The first US fund linked to bitcoin did not hold bitcoin. The ProShares Bitcoin Strategy ETF, ticker BITO, began trading on NYSE Arca in New York on 19 October 2021. Its issuer’s page today says it invests in futures and swaps and does not directly invest in bitcoin, and lists an expense ratio of 0.95 percent. The futures it holds trade on the CME, an exchange regulated by the Commodity Futures Trading Commission (CFTC).
Futures contracts expire, so a futures fund has to sell the expiring contract and buy the next one every month. When later contracts cost more than the current one, that roll eats into returns, which is one reason a futures fund can trail the bitcoin price over long periods.
29 August 2023: Grayscale beats the SEC in court
Grayscale ran the Grayscale Bitcoin Trust (GBTC) long before any bitcoin ETF existed, as a fund traded over the counter, often at a price far from the value of its bitcoin. It asked to convert the trust into an ETF, the SEC refused in 2022, and Grayscale took the SEC to court. On 29 August 2023 the US Court of Appeals for the D.C. Circuit ruled in Grayscale Investments v. SEC (No. 22-1142).
The court did not order the SEC to approve anything. As Gensler later summarised it, the court held that the Commission failed to adequately explain its reasoning in rejecting a spot fund while it had already accepted futures funds based on the same CME market. It vacated the SEC’s order and sent the case back. Refusing again would have meant writing a new explanation that a court might strike down a second time.
10 and 11 January 2024: approval, then trading
On 10 January 2024 the SEC approved the listing and trading of spot bitcoin ETP shares. Gensler wrote that staff had reviewed the registration statements of 10 spot bitcoin ETPs at the same time, to give issuers a level start, and Grayscale’s trust converted alongside them. Trading opened on 11 January 2024. Gensler added two lines that the issuers did not put in their marketing: “we did not approve or endorse bitcoin”, and bitcoin is “primarily a speculative, volatile asset”.
Grayscale’s trust carried a 1.50 percent annual fee into its new life, far above the newcomers. Holders who had waited years for the conversion could finally sell at the value of the bitcoin, and many did: the 95.1 million dollars that left GBTC on day one was the start of an exit that reached about 28.1 billion dollars by 6 November 2026, according to Farside’s cumulative row.
2024 to 2026: options, in-kind baskets and faster listings
The rules kept moving after launch. Options on IBIT started trading on 19 November 2024, and Nasdaq reported 353,716 contracts on the first day. On 29 July 2025 the SEC voted to allow in-kind creations and redemptions by authorized participants for crypto asset exchange-traded product (ETP) shares, meaning baskets of shares could be swapped for bitcoin rather than only for cash. The same release raised option position limits on certain bitcoin funds to up to 250,000 contracts.
On 17 September 2025 the SEC approved generic listing standards proposed by three exchanges: a product holding a spot commodity, digital assets included, can now be listed without its own rule filing if it meets the standards. That is why the number of crypto funds grew quickly afterwards. Morgan Stanley’s own fund, the Morgan Stanley Bitcoin Trust (MSBT), began operations on 7 April 2026, according to its quarterly report.
| Date | Event | Source |
|---|---|---|
| 2015 | Bitcoin Tracker One lists on Nasdaq Stockholm (issuer: XBT Provider) | XBT Provider (CoinShares) statement on Nasdaq |
| 19 Oct 2021 | BITO, a bitcoin futures fund, starts trading in New York | ProShares |
| 29 Aug 2023 | D.C. Circuit vacates the SEC’s refusal of Grayscale’s conversion | SEC Chair’s statement |
| 10 Jan 2024 | SEC approves spot bitcoin ETPs | SEC |
| 11 Jan 2024 | First trading day; net inflow 655.3 million dollars | Farside |
| 19 Nov 2024 | Options on IBIT start trading | Nasdaq |
| 29 Jul 2025 | SEC allows in-kind creations and redemptions | SEC release 2025-101 |
| 17 Sep 2025 | SEC approves generic listing standards | SEC release 2025-121 |
| 8 Oct 2025 | UK lifts the retail ban on crypto ETNs | FCA |
| 7 Apr 2026 | Morgan Stanley Bitcoin Trust begins operations | MSBT quarterly report |
How a bitcoin ETF works inside: trust, custodian and authorised participants
Who holds the coins
Take IBIT, the largest fund, as the worked case. Its 2025 annual report names Coinbase Custody Trust Company as the custodian of the trust’s bitcoin and Anchorage Digital Bank as an additional custodian. Coinbase, Inc., an affiliate of the custodian, buys and sells bitcoin for the trust as prime execution agent, and The Bank of New York Mellon keeps the cash and does the accounting. The sponsor and the trustee are BlackRock subsidiaries.
Other funds use different arrangements. Fidelity’s FBTC keeps its bitcoin with Fidelity Digital Assets, an affiliate of the sponsor, according to its quarterly report of November 2026. The Morgan Stanley trust names Coinbase Custody and BNY together as its bitcoin custodians. Each fund’s prospectus lists its own chain of service providers, and that list is worth reading before buying, because every firm on it is a party you depend on.
How shares are created and destroyed
Ordinary investors never deal with the fund. They buy shares from other investors on the exchange. New shares are created only by authorised participants (APs), large broker-dealers with a contract with the sponsor, and only in blocks. For IBIT a block, called a basket, is 40,000 shares.
Here is a simplified example with round numbers, not live figures. Say each IBIT share is backed by bitcoin worth 42.90 dollars, so a basket of 40,000 shares is worth about 1.72 million dollars. If buyers push the share price on the exchange to 43.10 dollars, an AP can deliver 1.72 million dollars to the fund, receive a new basket, and sell those shares on the exchange for about 1.72 million plus the gap. The extra supply pushes the price back toward the NAV. If shares trade below the NAV, the AP does the reverse: it buys shares cheaply, hands a basket back and receives the value of the bitcoin.
At launch the SEC allowed only cash baskets: the AP brought dollars and the fund bought bitcoin itself. Since the July 2025 orders, baskets can also be settled in bitcoin, which spares the fund trades and can lower costs. Each fund sets out in its own documents how it uses that option. In October 2026 Grayscale went a step further by letting eligible investors contribute crypto directly for shares of ten of its funds, through an AP, as our report on Grayscale’s in-kind subscriptions explains.
NAV, premium, discount and the weekend gap
IBIT values its bitcoin once a day, as soon as practicable after 4:00 p.m. New York time, using the CME CF Bitcoin Reference Rate (New York variant), according to its annual report. The shares trade on Nasdaq during US market hours on weekdays. Bitcoin trades every minute of every day.
That mismatch has a cost. A sharp bitcoin move on a Saturday shows up in the share price only when the exchange opens on Monday, and in the first minutes of trading the share price can drift from the value of the coins behind it. The arbitrage of the APs keeps the gap small during market hours. It cannot work while the stock market is closed.
What a bitcoin ETF costs: the fees of the US spot funds
The fee, called the sponsor fee or expense ratio, is taken every day from the fund’s assets, so you never see a bill: the value of each share simply falls slightly behind the price of bitcoin. The table below gives the fee stated by each trust in its latest filing with the SEC, read on 9 November 2026. Names are the registered names of the trusts.
| Ticker | Fund | Annual fee | Note |
|---|---|---|---|
| MSBT | Morgan Stanley Bitcoin Trust | 0.14% | began operations 7 April 2026 |
| BTC | Grayscale Bitcoin Mini Trust ETF | 0.15% | Grayscale’s low-fee fund |
| EZBC | Franklin Bitcoin ETF (Franklin Templeton) | 0.19% | |
| BITB | Bitwise Bitcoin ETF | 0.20% | |
| HODL | VanEck Bitcoin ETF | 0.20% | fee waiver on the first 2.5 billion dollars ended 31 July 2026 |
| ARKB | ARK 21Shares Bitcoin ETF | 0.21% | |
| IBIT | iShares Bitcoin Trust ETF (BlackRock) | 0.25% | launch waiver to 0.12% has ended |
| FBTC | Fidelity Wise Origin Bitcoin Fund | 0.25% | |
| BTCO | Invesco Galaxy Bitcoin ETF | 0.25% | |
| BRRR | CoinShares Bitcoin ETF | 0.25% | |
| BTCW | WisdomTree Bitcoin Fund | 0.25% | |
| GBTC | Grayscale Bitcoin Trust ETF | 1.50% | the older Grayscale trust, converted in January 2024 |
Small percentages add up. As an illustration that ignores any price change and any waiver: on 10,000 dollars held for ten years, a 1.50 percent fee takes about 1,400 dollars, a 0.25 percent fee about 250 dollars and a 0.14 percent fee about 140 dollars. Your broker may add a commission and the bid-ask spread on each trade, which the fee does not include.
Fee waivers come and go. Several funds launched in 2024 with a zero or reduced fee for a few months or for the first billions of assets, and those offers ended. A sponsor can waive fees again, and it must tell shareholders, so the figure in the table is a date-stamped snapshot, not a promise.
Who holds what: assets and flows since January 2024
Money moving into or out of the funds is called flow. A net inflow means APs created more shares than they redeemed that day; an outflow means the reverse. Farside Investors publishes the figures fund by fund each day in millions of dollars. The table sums every day of its all-data table from 11 January 2024 to 6 November 2026, as read on 9 November 2026.
| Fund | Net flow since launch (million dollars) |
|---|---|
| IBIT | +65,101 |
| FBTC | +10,275 |
| BTC (Grayscale Mini) | +2,879 |
| BITB | +2,027 |
| HODL | +985 |
| ARKB | +951 |
| MSBT | +814 |
| BRRR | +329 |
| EZBC | +303 |
| BTCO | +139 |
| BTCW | +74 |
| GBTC | -28,110 |
| All funds | +55,766 |
Read the total with care: it hides two opposite stories. IBIT gathered about 65.1 billion dollars, GBTC lost about 28.1 billion. Year by year, the funds took in a net 35.2 billion dollars in 2024 and about 21.4 billion in 2025, according to Farside’s daily table. In 2026 the direction turned: by our own sum of Farside’s daily totals the funds lost a net 828 million dollars from 1 January to 6 November, while SoSoValue put the year’s outflow at about 914 million. The week of 2 to 6 November alone turned the year from small net inflows to net outflows.
Flows are not the same as assets. Assets also move with the price of the bitcoin a fund already holds. IBIT’s net asset value was 67.03 billion dollars on 30 September 2026, according to its quarterly report, and about 60.7 billion on 6 November 2026 on the iShares page. The gap between the two reflects both the price of bitcoin and the flows of those five weeks.
Reading a flow table without being fooled
Farside’s table has a date in the first column, one column per fund and a total at the end. Brackets mean an outflow. The column headed BTC is Grayscale’s Mini Trust, not bitcoin itself. The MSBT column is empty before April 2026 because the fund did not exist. Aggregators such as SoSoValue publish their own totals, and small gaps between sources are normal; for the week of 2 to 6 November 2026, Farside’s daily rows add up to -1,281.7 million dollars, in line with SoSoValue’s weekly figure of -1.282 billion. For the whole period since January 2024, SoSoValue counted about 55.7 billion dollars of net inflows, close to Farside’s 55.8 billion.
Weekly headlines also need context. The 681 million dollars that left the funds in the week of 5 to 9 October 2026, which we reported at the time, followed months of net inflows. A single week says little about a three-year trend.
Flows and price: a link that runs both ways
It is tempting to read inflows as a forecast: money comes in, the price must rise. The data do not support that shortcut. Flows and price move together partly because price moves bring flows: after a rally, more investors want exposure and APs create shares; after a fall, some holders sell. The causality runs in both directions, and other buyers and sellers of bitcoin, on exchanges around the world and 24 hours a day, are far larger than the funds on most days.
Flows do tell you something factual: how much bitcoin the funds had to buy or sell through their APs on a given day, and which funds investors prefer. They do not tell you where the price is going, and the reasons given in the press for a week of outflows, inflation or interest rates for example, are opinions until someone shows the link.
Options, futures funds and the rest of the family
Options on IBIT let traders buy the right to purchase or sell fund shares at a set price by a set date. They are used for hedging and for speculation, and an option bought can expire worthless. BlackRock has also filed for a fund that would hold options on IBIT and bonds rather than bitcoin, to limit losses in exchange for a cap on gains. Under the procedure BlackRock chose, that filing can take effect on 2 January 2027 at the earliest, and the fee and the cap were still blank in it, as our report on BlackRock’s PBIT filing explains.
Futures funds such as BITO still exist alongside spot funds, along with leveraged and inverse products that aim to return a multiple, or the opposite, of a day’s move. The SEC’s generic listing standards of September 2025 do not cover leveraged or inverse products, which still need their own rule filing. Their daily reset makes their long-term results drift far from a simple multiple of bitcoin’s return, and they are built for short-term trading.
Other crypto-assets followed bitcoin into the same wrapper. The SEC’s July 2025 release on in-kind baskets covers spot ether funds too, and the same day as the generic listing standards it approved a Grayscale fund holding several digital assets based on the CoinDesk 5 index. Funds tracking ether and other crypto-assets work the same way as the bitcoin funds described here, and a later lesson of the institutions path, on crypto ETFs and ETPs, covers them in detail.
Europe, the UK and Switzerland: ETPs and ETNs instead of ETFs
The first one was Swedish
Europe was earlier than the US. Bitcoin Tracker One, issued by XBT Provider, now part of CoinShares, listed on Nasdaq Stockholm in 2015; the issuer describes it as the first bitcoin-referenced security available on a regulated exchange. Its audited statements describe certificates designed to track the bitcoin price synthetically, less a fee: the holder relies on the issuer, not on a pile of coins set aside for each certificate.
Why a European fund cannot just hold bitcoin
Most European ETFs are UCITS funds, a framework built for diversified portfolios of securities, with strict rules on how much one asset can weigh. A fund holding only bitcoin does not fit. In its advice to the European Commission of 26 June 2025, the European Securities and Markets Authority (ESMA) wrote that “Crypto-assets are not explicitly eligible for direct investments under the current UCITS framework”, It added that changing the directive to allow direct investment in crypto-assets such as bitcoin might trigger wider changes, from diversification to valuation and safekeeping rules. ESMA only advises: the directive itself has not been changed.
So European issuers sell exchange-traded products structured as debt securities instead. In a physically backed ETP, the issuer buys bitcoin to cover the notes and holds it with a custodian as collateral; in a synthetic one, such as the early Swedish certificate, the issuer hedges in other ways. Either way you hold a claim on an issuer, which adds issuer risk to bitcoin risk. Read the prospectus to see what backs the notes and who holds it.
European investors therefore buy European-listed ETPs, quoted in euros, dollars, pounds or Swiss francs depending on the listing. Physical crypto ETPs in Europe took a net 288.9 million dollars of new money in August 2026, according to the monthly flows report of the issuer 21Shares, a figure that covers every crypto-asset, bitcoin among them.
MiCA or MiFID: which rulebook applies
The EU’s crypto-asset regulation, MiCA, does not apply to crypto-assets that qualify as financial instruments; ESMA recalls it in the same June 2025 report. An ETN listed on a stock exchange is a financial instrument, so securities law applies: MiFID for the firms selling it, prospectus rules for the issuer. Our MiCA guide explains what that regulation covers. MiCA still matters around the edges. In France, the AMF changed its policy on complex products on 11 December 2025 so that crypto-linked ETNs meeting four conditions, including custody by a MiCA-authorised provider, can be marketed to the public, while warning that they are still complex products and are not suitable for all investor profiles.
The UK: retail access since October 2025
The Financial Conduct Authority (FCA) banned the sale of crypto ETNs to retail clients in January 2021. It lifted that ban from 8 October 2025, for notes traded on a UK Recognised Investment Exchange. Financial promotion rules and the Consumer Duty apply, the ban on retail crypto derivatives stays, and the FCA states that there is no coverage from the Financial Services Compensation Scheme.
Tax wrappers changed twice. HMRC’s policy paper says crypto ETNs could be held in registered pension schemes from 8 October 2025 and were first eligible for stocks and shares ISAs, but from 6 April 2026 they became qualifying investments of the Innovative Finance ISA instead, with notes already held moved across on that date. The government says it keeps the question under review, with a view to returning them to the stocks and shares ISA later.
Switzerland: a retail fund that holds bitcoin
Switzerland has listed crypto ETPs for years on the SIX exchange. On 20 October 2026 the regulator FINMA went further and approved the country’s first fund for retail investors that invests directly in bitcoin, with an exemption from the usual diversification rules and custody conditions, as we reported on the FINMA decision. FINMA did not name the issuer, the fee or a listing date.
ETF or bitcoin you hold yourself?
Both routes give exposure to the same price. They differ in almost everything else: who controls the coins, when you can trade, what you pay and what you can do with what you own. The table sets them side by side; it does not say which is better, because that depends on what you want the bitcoin for.
| Question | Spot ETF share (US) | Bitcoin you hold yourself |
|---|---|---|
| Who holds the keys | The fund’s custodian | You, or the exchange if you leave coins there |
| Where you buy | Any brokerage account | A crypto exchange or broker, then your own wallet |
| Trading hours | Stock market hours, weekdays | Every day, around the clock |
| Yearly cost | 0.14% to 1.50% (US funds, 9 Nov 2026) | No yearly fee; trading and network fees |
| Can you send or spend it | No | Yes |
| Main risks besides price | Custodian, sponsor, market closed when bitcoin moves | Losing keys, theft, scams, exchange failure |
| Tax reporting (US) | Broker reports sales on Form 1099-B | You track every disposal yourself |
Holding coins yourself means managing a private key, and with it the risk of losing it. Our guide to private and public keys and the glossary entry on self-custody explain what that involves. A fund removes that job, and with it the possibility to use bitcoin as money or to check your own coins on the blockchain.
Choosing between funds is a matter of criteria, not of a name. The fee comes first for a long holding. Size and trading volume matter for the spread you pay. The custodian and the structure tell you whom you depend on, and whether the product is a trust holding bitcoin, a futures fund, a leveraged product or a debt note. For a European or UK investor, the questions are what the issuer holds as collateral, which exchange lists the product and which tax wrapper accepts it.
Taxes: the wrapper changes the paperwork
In the United States, fund shares are securities held in a brokerage account. When you sell, your broker files Form 1099-B, the form a broker must file for each person for whom they sold stocks, commodities and other securities. The gain is long-term if you held the shares for more than a year and short-term if you held them for a year or less, as IRS Topic 409 explains.
There is a twist. IBIT’s annual report says each shareholder is treated, for federal income tax, as the owner of an undivided interest in the bitcoin held in the trust, assuming the trust is treated as a grantor trust, and that each sale of bitcoin by the trust to pay its expenses generally will be a taxable event for shareholders. The filing also warns that the tax rules for digital assets remain uncertain. Our guide to US crypto taxes covers bitcoin held directly, which is property for the IRS.
In the UK, the point to check is the wrapper: crypto ETNs go into an Innovative Finance ISA or a registered pension scheme, not a stocks and shares ISA, since 6 April 2026. In France, gains on digital assets sold directly are taxed at the flat 31.4 percent rate (PFU) for 2026, with an exemption when total sales in the year do not exceed 305 euros, according to impots.gouv.fr; that page covers direct disposals of digital assets only, so an ETN held in an ordinary securities account (compte-titres) falls under the rules for securities instead. It cannot go into a PEA, because that plan accepts company shares and funds invested more than 75 percent in shares, as service-public.fr lists, and a bitcoin note is neither. In Italy, gains on crypto-assets held directly are taxed at 33 percent from 1 January 2026 with no exemption threshold, according to the Agenzia delle Entrate; an ETP is a listed security rather than a crypto-asset held directly, and how it is taxed depends on its legal classification, which a broker or tax adviser can confirm.
Risks and mistakes to avoid
The first mistake is thinking a share is safer than bitcoin. If bitcoin falls by half, the share falls by about half: the fund changes the wrapper, not the price risk.
Custody is concentrated. Coinbase Custody holds the bitcoin of several of the largest funds, IBIT and the Morgan Stanley trust among them. The custodian agreements and insurance terms are in each fund’s filings, and a security incident at one custodian would touch several funds at once. IBIT’s own risk factors say that security threats to its account at Coinbase Custody could halt the trust’s operations and cause a loss of its assets.
For ETNs, add the issuer: if it fails, you are a creditor, and the UK compensation scheme does not cover these products. For leveraged or inverse products, read how the daily reset works before buying, because their returns over weeks can be very different from what the headline multiple suggests. And beware of fake platforms that use the words bitcoin ETF to sell nothing at all: a real fund share is bought through a regulated broker, under a ticker you can check on the exchange’s website.
Fees are the last trap. On 9 November 2026 the cheapest US spot fund charged 0.14 percent a year and the most expensive 1.50 percent, and GBTC, the dearest, still held about 10.6 billion dollars of bitcoin on 30 September 2026, according to its quarterly report.
