How Digital Option Vault Auctions Can Affect Market Maker Volatility

Summary

The commentary explains how scheduled digital option vault auctions can shape implied volatility in crypto options. When market makers know auction timing and size in advance, they may sell options beforehand, then seek to buy options from the vault at a discount. The selling can push implied volatility lower, while the strategy exposes market makers to short gamma if spot moves. They may need to cover short option exposure in the market if they cannot obtain the expected vault allocation.

The article uses an auction incident in which some large market makers could not bid as an example: prior volatility selling was followed by a rise in implied volatility as participants sought to cover, while a spot decline increased short gamma risk. It also discusses possible auction design changes, such as varying timing or smoothing supply, and notes collateral risk when vault and exchange positions offset each other imperfectly. This is an explanatory account, not a quantified study; the source gives no full trade data or measured causal estimates, and its account of the incident is qualified as an interpretation.

Key ideas

• Advance disclosure of vault auction schedules can let market makers position ahead of expected option supply.
• Pre-auction option selling may depress implied volatility, but leaves sellers exposed to short gamma.
• If market makers cannot buy in an auction, covering risk on an exchange may contribute to volatility rising.
• Spot moves through option strikes can amplify the risk of offsetting vault and exchange positions.
• Changing auction timing or smoothing supply are proposed ways to reduce market impact.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.