ETF construction on CRIX

doi:10.1186/s40854-025-00762-3

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ETF construction on CRIX

2025-03-03

Konstantin Häusler *

Wolfgang Karl Härdle

DOI：10.1186/s40854-025-00762-3

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Abstract

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We construct an exchange-traded fund (ETF) based on the CRyptocurrency IndeX (CRIX), which closely maps nonstationary cryptocurrency (CC) dynamics by adapting the weights of its constituents dynamically. Our scenario analysis considers the fee schedules of regulated CC exchanges, spreads obtained from order book data, and investment in- & outflows to the ETF are modelled stochastically. The scenario analysis yields valuable insights into the mechanisms, costs, and risks of this innovative financial product: i) although the composition of the CRIX ETF changes frequently (from 5 to 30 constituents), it remains robust in its core, as the weights of Bitcoin (BTC) and Ethereum (ETH) are robust over time; ii) on average, 5.2% needs to be rebalanced on the rebalancing dates; iii) trading costs are low compared with traditional assets; iv) the liquidity of the CC sector increases significantly during the analysis period; spreads occur, especially for altcoins and increase with the size of the transactions. However, because BTC and ETH are the most affected by rebalancing, the cost of spreads remains limited.

Keywords:

Cryptocurrency

ETF

CRIX

Market dynamics

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