A crypto ETF is a promise to track a coin, and the tables show how closely that promise is kept. Across the 39 spot crypto ETFs ETFIQ can measure as of September 28, 2026, the typical gap between what a fund returned and what its underlying coin returned is 0.60%, and 28 of the 39 finished within a point of the coin. That small residual is not a mystery. It is the fee, the custody arrangement, and the mechanics of creating and redeeming shares in blocks, all folded into one number that no sponsor publishes on its own.
Bitcoin funds cluster tightly. Thirteen funds hold Bitcoin, and 12 of the 12 that can be measured finished within a point of the coin's own −23.9% return. HODL, the VanEck Bitcoin ETF, showed a fund return of −23.6% against the coin's −23.9%, a difference of +0.3%, the closest reading among the group. GBTC, the Grayscale Bitcoin Trust ETF, returned −24.8% against the same −23.9% coin move, a difference of −0.9%, wider than its Bitcoin peers though still within a point. Ether funds show more spread. Ether itself returned −33.4% over the measured window, and 10 of 11 Ether funds finished within a point of that. ETH, the Grayscale Ethereum Staking Mini ETF, returned −32.6% against −33.4%, a difference of +0.7%, while ETHE, the Grayscale Ethereum Staking ETF, returned −34.4%, a difference of −1.0%, the one Ether fund outside the point band. The median difference across all 11 Ether funds is −0.5%.
Solana and XRP tell a different story. Eight Solana funds are measured, with a median difference of −0.7% and 6 of 8 within a point; VSOL, the VanEck Solana ETF, returned +57.1% against the coin's +58.3%, a difference of −1.2%. XRP funds show the widest gap in the coin table: a median difference of −3.2% and none of the three measured funds landing within a point. GXRP and XRPZ, the Grayscale and Franklin XRP trusts, both returned −3.2% against the coin, and TOXR, the 21Shares XRP ETF, returned −3.0%. Dogecoin, Litecoin, and Polkadot each show a single measured fund or a small median difference, all landing outside the one-point band as well.
Two trusts in the full list are quoted too thinly to compare in the ordinary sense, closing unchanged on more than one trading day in twenty; their differences describe the days somebody traded rather than the fund's actual tracking, and they appear in the data without being ranked against the rest. Separately, 38 fund-windows involve returns compounded over long enough periods that subtraction no longer states the gap meaningfully. ETHE since January 2020 returned +627.8% against Ether's +1,854.4%; subtracting gives −1,227 points, a number that means nothing, so the compounded gap of −62.8% is what is published for those windows instead.
A reader checking the live desk can pull today's fund and coin closes for any ticker in the second table and see whether the difference has widened or narrowed since September 28, 2026.