The source hierarchy
Not all sources are equal, and the differences matter more in this category than in most. We work down this order and stop at the first level that answers the question:
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SEC filings and orders
Annual reports on Form 10-K, quarterly reports on Form 10-Q, prospectuses filed under Rule 424(b) and the Commission's own approval orders. This is the only tier where a figure is under a legal obligation to be accurate. Exchange listing assignments, for example, come from Release No. 34-99306 of 10 January 2024 rather than from any comparison table — which is how we know Bitwise's BITB is on NYSE Arca and not on Cboe BZX, as several widely copied tables have it.
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The issuer's own published pages
Fund pages, factsheets and fee schedules published by BlackRock, Fidelity, Grayscale, Bitwise, 21Shares, VanEck and the rest. Reliable for fees, custodians, inception dates and daily holdings. Several issuer sites block automated access, so some of this is read manually and some of it we simply cannot reach — in which case we drop a tier and say so.
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Exchange and regulator sources
The rulebooks and securities lists published by Nasdaq, NYSE Arca, Cboe BZX, HKEX, the TSX and their equivalents, plus primary regulatory material from the SEC, the IRS, FinCEN, ESMA and the FCA. Hong Kong stock codes on this site, for instance, come from HKEX's own list of securities rather than from any secondary summary — which is why we can say with confidence that only ChinaAMC's funds carry renminbi counters.
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Recognised third-party aggregators
Used only where the tiers above are unavailable, and always labelled. Aggregator data is useful and frequently correct, but it is also where most of the errors that circulate in this category originate. When two aggregators disagree materially — as they do on the assets of Grayscale's Ethereum Mini Trust, where reported figures differ by more than half — we publish the disagreement rather than choosing a side.
What we will not do
We do not estimate a number to fill a gap in a table. If a sponsor does not publish its coin holdings, the cell says so. If we could not confirm a custodian, the page says the position is unresolved and tells you to check the prospectus. A blank that is honest is more useful than a figure that looks authoritative and is a guess.
Why every figure carries a date
A spot Bitcoin ETF is, functionally, one asset in a wrapper. Its assets under management therefore move with the bitcoin price rather than with investor behaviour, and bitcoin is capable of moving 25% in a month — as it did in August 2026. An undated assets figure in this category is not a fact, it is a snapshot pretending to be one.
That is why we publish coin holdings alongside dollar assets wherever a sponsor discloses them. Coin counts only change when investors actually buy or sell, which makes them the far more informative number for judging whether money is arriving or leaving. Where a figure is computed rather than reported, we say so and give the reference price used — currently $77,275.3 as of 1 September 2026.
How we label confidence
Three levels appear across the site. A figure taken from an issuer page or an SEC filing is published plainly. A figure derived from verified coin holdings at a stated reference price is marked with a tilde and described as computed. A figure available only through a third-party aggregator is described as such in the table caption or in the surrounding prose, with its date. Anything we could not establish at all is written as not published, or not confirmed, and never estimated.
Inclusion rules
The main Bitcoin ETF list includes a fund only if it holds bitcoin directly through a qualified custodian and trades on a US national securities exchange. That excludes funds holding futures, funds holding other funds, leveraged and inverse products, covered-call funds and equity funds that invest in miners. Each of those categories has its own page, because they behave differently enough that comparing them side by side would mislead.
Funds that have closed stay on the site rather than disappearing, because people still search the tickers and deserve an answer. Hashdex's DEFI, the first US spot Bitcoin ETF ever to wind down, is documented on the main list with the dates of its liquidation.
How rankings and "best" pages work
Our best Bitcoin ETFs and best crypto ETFs pages are opinion, and they are structured as picks by investor situation rather than as a single league table — because there is no single right answer. A fund that suits someone trading options weekly is the wrong choice for someone contributing $200 a month and never looking at it again.
The criteria we weigh are stated on those pages: sponsor fee after any expired waiver, bid-ask spread, tracking difference where reliable data exists, assets and liquidity as a proxy for closure risk, custody arrangements, and structural features such as in-kind creation or an options market. Where we pick a fund, we also state what you give up by choosing it. No sponsor is consulted, paid or notified.
The commercial arrangement, in full
This site earns money from outbound links to a cryptocurrency exchange. If you open an
account after following one, we may be paid a fee. Every such link carries
rel="nofollow noopener" so it passes no search-engine credit, and opens in a
new tab.
Three things follow from that, and we would rather state them than have you infer them. First, the arrangement is with a trading venue and not with any fund sponsor, so it creates no incentive to favour one ETF over another. Second, it does create an incentive to recommend buying crypto directly, and the honest counterweight is that we say repeatedly and in detail where the ETF is the better wrapper — inside a tax-advantaged account, for anyone who does not want key-management responsibility, and for anyone who wants their bitcoin exposure to sit alongside the rest of a portfolio at one broker. That case is made at length on ETF versus owning bitcoin.
Third, we publish the criticisms alongside the link. On where to buy crypto you will find that the venue we link to does not disclose its trading fee rates before you register, that it publishes no proof of reserves, and that its European service is currently restricted. Those are real weaknesses and they belong next to the recommendation, not buried.
Corrections policy
When we find a material error we fix it and update the page's modified date. Where the error changed the sense of something — a fee, a ranking, a regulatory claim — we note the change on the page rather than silently editing it. Reports to contact@bitcoinetf.directory are welcome from anyone, and particularly from issuers whose funds we have described.
What this methodology cannot do
It cannot make this site a substitute for a prospectus. Fee schedules change, waivers lapse, sponsors rename and restrategise funds mid-year — Bitwise's BITC stopped being an optimum-roll fund in December 2024 and CoinShares' WGMI stopped being a pure miner fund in August 2026, both while keeping their tickers. Before you commit money, read the fund's own current documents. Everything here is a map, not the territory, and none of it is financial advice.