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The Rollover Toggle

If the rollover toggle is on, the skew will automatically shift to the next expiration series as the current options expire. For example, when the September option expires, the skew automatically shift to the October expiration. The Rollover toggle is responsive to the skews created using a wildcard. A wildcard specifies a specific relationship to the lead-month expiration, and the Rollover toggle enables you to make this relationship a part of the skew definition. However, you dont have to enter a wildcard to use the rollover toggle. You can create a rollover using any volatility skew definition by toggling Rollover to on.