BITB: the Bitcoin ETF that lets you check its own homework

What BITB is

The Bitwise Bitcoin ETF is a spot fund holding bitcoin directly, launched on 11 January 2024 alongside the rest of the first wave. Structurally there is nothing exotic here: a grantor trust under the Securities Act of 1933, coins in cold storage at a qualified custodian, a 0.20% sponsor fee taken out of the holdings, no futures and no leverage. If that framework is unfamiliar, start with what a Bitcoin ETF is.

By assets it is mid-sized. Third-party data puts it near $3.0bn and about 41,500 BTC as of 27 August 2026 — we have not been able to verify those figures against issuer disclosure, so treat them as approximate rather than authoritative. That is enough to make BITB the largest fund outside the big four, and comfortably clear of the smallest survivors on the US spot Bitcoin ETF list, several of which sit in the low hundreds of millions.

Bitwise itself is the odd one out among the sponsors. It is not a trillion-dollar asset manager with a crypto side project; it is a crypto-native firm that got a fund approved alongside BlackRock and Fidelity. That shows up in how the product is presented, which is where this page's real subject begins.

NYSE Arca, not Cboe BZX

A small factual correction first, because it appears in a lot of comparison tables and it is wrong in most of them. BITB is listed on NYSE Arca, not Cboe BZX.

The authoritative source is SEC Release 34-99306, dated 10 January 2024 — the order that approved the first batch of US spot Bitcoin ETFs. That order places Bitwise under NYSE Arca Rule 8.201-E, the commodity-based trust shares standard, and its exchange assignments are definitive in a way that no aggregator's database is. Several widely copied tables list BITB under Cboe BZX, probably because most of the January 2024 cohort did list there, and the error propagates because everyone copies everyone.

Does it change your outcome as an investor? Not materially — order routing and execution quality do not hinge on which primary listing venue a large ETF uses. But it is a useful test of a source. A table that gets BITB's exchange wrong is a table built from other tables, and you should assume its fee and asset figures came from the same place. We take exchange assignments from the SEC order on every page of this site, including the issuers and custodians breakdown.

The transparency argument

Here is what makes BITB genuinely different. Bitwise publishes the on-chain addresses that hold the fund's bitcoin. Anyone with a block explorer and five minutes can look up the balances and confirm the coins are where the fund says they are. No login, no relationship with the issuer, no waiting for a report.

Every other major US spot Bitcoin ETF asks you to take an attestation on trust. The custodian confirms the holdings, an auditor reviews the process, filings report the totals, and the chain of assurance is entirely made of institutions vouching for one another. That chain is not weak — these are regulated entities under real obligations — but it is exactly the kind of arrangement bitcoin was designed to make unnecessary. Bitwise is the only issuer in this category that has taken the point seriously enough to act on it.

Bitwise also directs a share of its profits from the fund to Bitcoin open-source development. That is a values proposition rather than a financial one and it will land differently depending on the reader, but it is a real commitment and not a marketing slogan attached to nothing.

Now the counterweight, because transparency deserves an honest accounting. Being able to see the coins does not mean you control them, and it does not protect you if the custodian holding them fails — Coinbase Custody holds BITB's bitcoin, along with roughly 80% of all bitcoin inside US ETFs. Published addresses answer the question "do the coins exist?" and leave "what happens if the custodian is compromised?" exactly where it was. Verification is not the same as control, and neither is a substitute for cost or tracking quality. An investor who buys BITB purely on the transparency case, and never checks what it does to their returns, has made a decision on one variable out of three.

Verification

Fee, spread and tracking

BITB charges 0.20% a year, with no waiver in force — the 0% introductory rate on the first $1bn expired long ago, which puts it in the same category as several rivals whose headline launch pricing has since lapsed. At 0.20% it undercuts IBIT and FBTC, both at 0.25%, and sits above the Grayscale Mini Trust at 0.15% and Morgan Stanley's MSBT at 0.14%. On a $25,000 position, the gap between BITB and the Mini Trust is roughly $13 a year.

Its median bid-ask spread is around 0.03% on third-party data, level with the large funds, so execution is not a problem for ordinary order sizes.

Tracking is the issue. Third-party estimates put BITB's tracking difference near 0.15%, against roughly 0.03% for IBIT and FBTC. If that holds, the gap in tracking is larger than the entire fee advantage BITB has over them — you would be saving five basis points on the sponsor fee and giving back more than that in return shortfall. This is the fund's clearest weakness and there is no way to argue around it.

Two caveats in fairness. Tracking difference is a noisy measure over short windows, it is sensitive to how and when it is computed, and the figures here are third-party rather than issuer-verified. It is also not as bad as the worst in the category — Franklin's EZBC is reported near 0.42%. But the direction is clear enough that anyone choosing BITB primarily on cost should look at total cost rather than the expense ratio alone. The fees and costs page works through why fee, spread and tracking have to be added together before a comparison means anything.

Custody and authorised participants

Coinbase Custody holds the bitcoin, per third-party sources. That places BITB inside the category's dominant custody arrangement rather than outside it, and it is worth being blunt about the tension: the most transparent fund in the group still relies on the same custodian as almost everyone else. If custody concentration is the risk you care about, the answers are FBTC, which self-custodies through a Fidelity affiliate, and ARKB, which splits across three providers.

Seven authorised participants were named as of 23 May 2025: Jane Street, Marex Financial, Macquarie USA, Goldman Sachs Group, Citadel, Virtu Americas and BNY Mellon. All of them except Marex and BNY may transact in-kind. That is a notably high in-kind ratio — five out of seven — compared with IBIT, where only four of thirteen APs have executed in-kind agreements, because in-kind creation requires an affiliate that can actually hold bitcoin.

BITB is covered by the SEC's in-kind order of 29 July 2025, Release 34-103571, under NYSE Arca Rule 8.201-E. The mechanism, and why it tends to support tighter tracking, is explained in how Bitcoin ETFs work. Given that BITB's reported tracking is the wide end of the big funds, this is one to watch rather than one to assume has been solved.

Who should own BITB

BITB fits an investor who wants a spot Bitcoin ETF, cares about how the product is run and not only what it charges, and is willing to accept a slightly weaker tracking record in exchange for holdings they can verify and a sponsor whose commitments to the underlying protocol are concrete. That is a real constituency and it is underserved elsewhere on this list.

It is a poor fit if you are optimising purely for cost, where the Grayscale Mini Trust at 0.15% with tighter tracking is the better answer, or purely for liquidity and options, where IBIT is not seriously challenged. And as with every fund here, it is the wrong instrument entirely if what you want is bitcoin you can withdraw and hold — see the fund versus the coin. Our picks by investor type put BITB against its rivals directly, and how to buy a Bitcoin ETF covers the practical steps once you have chosen.