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Temporary market impact vs order book liquidity

We explore slippage costs for larger notional order sizes focusing on the three most liquid and regulated exchange venues vs Coinbase Prime.

May 27, 2022

New

Trading Insights

4 min

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Written by

  • Kilian Mie (Head of Data Science) & David Duong (Head of Research)

Introduction

As institutional activity in digital assets increases, we revisit our previous work (Crypto Liquidity: What trading speed is right for you?) to explore slippage costs for larger notional order sizes (in USD terms). In this study, we focus on three of the regulated exchange venues (which we refer to anonymously below as Exchanges A, B and C), and compare them against Coinbase Prime (the aggregate of Coinbase + LMAX + Bitstamp).

Key observations

  • The flatter the slippage curve, the more liquid the venue
  • Coinbase Prime’s access to smart routing across multiple venues results in significantly lower slippage for all order sizes studied 
    • About 10 bps improvement vs Exchange B at a US$2M notional, and
    • About 30 bps improvement at a $5M notional
    • This analysis does not include Coinbase Prime's access to non-public liquidity providers
  • Exchange A also offers a competitive slippage to order size ratio, which is only ~2.5 to 3.5bps above Coinbase Prime’s level
  • BTC-USD is more liquid than ETH-USD and thus has correspondingly less slippage across all order sizes, which is in line with our expectations
  • Below a notional size of $5M, the level of slippage across exchanges seems relatively balanced regardless of the quote on the bid or ask side.
    • However, the slippage curve for Exchange B on BTC/USD is much steeper on the bid than the ask side (by roughly 18bps) once the notional grows above $5M.
    • Meanwhile, for Exchange C, slippage on ETH/USD is actually much lower on the bid than the ask side for notional sizes above $5M
    • These imbalances were affected by the recent market volatility and were not previously visible in the data of earlier periods

Methodology 

  • We source orderbook snapshots from two sources: Nomics and Cryptocompare
  • For a given period, we measure the slippage of walking up the order book from the mid-quote up to the given USD notional
  • We then compute the average slippage for each notional from April 15 to May 15, 2022, including the corresponding 25% to 75% percentile range

BTC/USD: Slippage (bps) vs Order Size (US$M) for April 15 to May 15, 2022

Filled point represents the mean slippage over time. Shaded region represents the interquartile range.

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ETH/USD: Slippage (bps) vs Order Size (US$M) for April 15 to May 15, 2022

Filled point represents the mean slippage over time. Shaded region represents the interquartile range.

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