US spot bitcoin exchange-traded products began trading in January 2024, after a decade in which every application had been rejected and following a federal appeals court ruling that the regulator's reasoning for refusing one was arbitrary. Spot ether products followed later the same year. The instrument itself is unremarkable: a fund holds the asset with a custodian and issues shares that trade on a stock exchange.
What it changed was access. A pension fund, an insurer, a registered investment adviser and a retail investor with only a brokerage account can all buy a listed security; most of them cannot open an account at a crypto exchange, and many are prohibited from holding an asset without a qualified custodian. The product did not create demand so much as remove the operational and compliance obstacles standing between existing demand and the asset — which is why the flows in the first year were substantial and why they came predominantly through advisory channels rather than from crypto-native holders.
The mechanics are worth understanding because they change what on-chain data means. Creation and redemption happen in blocks through authorised participants, and the resulting purchases are executed by the fund's trading desks, often through over-the-counter venues rather than public order books. So a day of large inflows may leave little trace on exchange order books and none in the metrics that watch exchange balances. At the same time, coins moving into a custodian's cold storage register on-chain as an outflow from circulation, which several long-standing indicators were not designed to distinguish from accumulation by individuals.
The second change is the character of the flow. ETF demand is allocation demand: it responds to model portfolios, adviser platform approvals, quarterly rebalancing and the risk appetite of institutions whose decisions have nothing to do with the network. That makes a portion of demand correlated with broad financial conditions in a more direct way than before, and it means flows can reverse for reasons that have no crypto-specific explanation at all. Daily flow figures are published by the issuers, which is a genuinely new source of near-real-time demand data in a market that has never had one.
It also concentrated custody. A small number of qualified custodians hold the assets behind most of these products, which is a centralisation of a different kind from the one the sector usually discusses: not of block production, but of ownership. The counterparty is regulated and audited, which is the point, and the concentration is real.
The reasonable summary is that the wrapper changed distribution, reporting and custody, and changed nothing about the asset. Holders of shares do not hold coins, cannot transfer them, and are exposed to the fund's fee and to its custodian. What the market gained is a large, visible, daily-reported demand channel; what it should not conclude is that the arrival of that channel makes the asset something different from what it was.