21Shares moves seven U.S. crypto funds to FTSE benchmarks

Seven U.S.-listed cryptocurrency funds sponsored by 21Shares began using FTSE Russell pricing indices at the Aug. 27 market open, replacing or standardizing the benchmarks used to measure their underlying digital assets.

The affected products are the ARK 21Shares Bitcoin ETF (ARKB), 21Shares Ethereum ETF (TETH), 21Shares Solana ETF (TSOL), 21Shares XRP ETF (TOXR), 21Shares Sui ETF (TSUI), 21Shares Dogecoin ETF (TDOG) and 21Shares Polkadot ETF (TDOT). Each now maps to the corresponding FTSE single-asset index.

The change matters because a pricing benchmark helps determine a fund’s daily net asset value and provides the reference against which its performance is evaluated. It does not replace the cryptocurrency held by a physically backed product or change the number of coins represented by a share.

What changed at the market open

FTSE Russell and 21Shares announced the scheduled transition on Aug. 26, one day before it took effect. Current 21Shares product records reviewed on Aug. 27 identify the FTSE Bitcoin Index as ARKB’s pricing benchmark and the FTSE Ethereum Index as TETH’s benchmark, supporting that the switch moved beyond a future plan.

The issuer said the products’ underlying asset exposures, legal structures, custodians, primary exchange listings and fee schedules were unchanged. The verified event is therefore an infrastructure change rather than a fund conversion, new product launch or portfolio reallocation.

ARKB’s earlier benchmark arrangement provides a clearer view of the mechanics. A July 7 SEC filing disclosed that 21Shares had notified CF Benchmarks on June 30 that it would terminate its license for the CME CF Bitcoin Reference Rate—New York Variant effective Aug. 31. The filing said the reference rate was used to value ARKB shares daily and calculate net asset value. It also said the sponsor intended to enter a licensing agreement with FTSE on or about Aug. 24.

The dates should not be conflated: June 30 was the notice date, July 7 was the SEC filing date, Aug. 24 was the anticipated FTSE licensing date, Aug. 26 was the public partnership announcement and Aug. 27 was the stated benchmark-transition date. The former CF licensing agreement’s disclosed Aug. 31 termination date is later than the operational switch.

Why benchmark administration matters

A crypto fund needs a repeatable process for converting transactions across eligible trading venues into a reference price. Index rules can differ in venue selection, data screening, calculation windows, weighting and responses to disrupted or anomalous markets. Those differences can produce modest divergences between benchmarks even when they measure the same asset.

That does not mean the fund automatically buys or sells cryptocurrency whenever its index provider changes. A single-asset spot product can continue holding the same asset while adopting a different calculation methodology for valuation and performance measurement.

The transition also extends a benchmark framework that 21Shares said it had already introduced across core European and Australian products in March. Applying the framework to the seven U.S. listings gives the issuer a more consistent index provider across regions, although the funds remain separate legal products governed by their own offering documents.

What remains unmeasured

Neither the announcement nor the reviewed records establish that the benchmark change altered investor demand, secondary-market liquidity, tracking differences or trading prices on Aug. 27. No cryptocurrency, fund-price, return or trading-volume claim is included because a causal market response was not demonstrated.

Investors and market observers will need subsequent net-asset-value calculations, closing market prices and tracking data to assess whether the change produces any measurable difference. Updated prospectuses and future regulatory filings will also clarify the complete methodology and contractual details for individual funds beyond ARKB.