A
Annualized Expected Return
The projected premium income from a call, expressed as an annual percentage of the underlying position value. Formula: (Net Credit ÷ Days to Expiration × 365) ÷ Underlying Cost. This is the primary scoring metric Tollbooth uses to compare calls across different expirations and strikes on an apples-to-apples basis.
Assignment
When the call buyer exercises their right to purchase your shares at the strike price. For covered calls, this is not a loss — you receive the strike price plus all premium collected. In Preserve Equities mode, Tollbooth is specifically designed to minimize assignment probability through delta caps, early rolling, and earnings protection.
ATR (Average True Range)
A measure of an underlying's average daily price range over a set period. Tollbooth uses the 22-day ATR to determine when a covered call is at meaningful risk — when the underlying is within ATR distance of the strike price. More reliable than fixed percentage thresholds across different underlying volatility profiles.
B
Bid-Ask Spread
The difference between the highest price a buyer will pay (bid) and the lowest price a seller will accept (ask). Wide bid-ask spreads indicate low liquidity. Tollbooth scores chains partly on bid-ask spread width and avoids placing orders where fills are unlikely or where the spread cost eats into the expected return.
Bull Put Spread
Selling an out-of-the-money put and buying a further out-of-the-money put on the same underlying and expiration. Generates income if the underlying stays flat, rises, or declines only modestly. Maximum loss is capped at the spread width minus the net credit. Does not require owning the underlying. Available on an invite-only institutional basis.
D
Delta
A number between 0.0 and 1.0 representing the approximate probability that an option expires in the money. A 20-delta call has roughly a 20% probability of expiring in the money. Also measures how much the option price moves per $1 move in the underlying stock. Tollbooth uses delta caps to control assignment risk.
DTE (Days to Expiration)
Calendar days until the options contract expires. Tollbooth favors calls expiring 7 to 35 days out (1 to 5 weeks) because they offer the highest annualized return per day of premium collected. This preference for weekly options over monthly is one of the largest contributors to outperformance versus covered call ETFs.
I
Implied Volatility (IV)
The market's forward-looking expectation of price movement, embedded in option prices. Higher IV means higher option premium — more income available for the covered call seller. Tollbooth captures approximately 15% to 30% of implied volatility as annualized income and prefers to open positions when IV is elevated relative to recent norms.
IV Crush
The sharp drop in implied volatility immediately following an earnings announcement. After earnings, options prices fall quickly because the binary uncertainty has resolved. This reduces the delta of existing calls, often pushing them further out of the money — which benefits covered call holders by reducing assignment risk. Tollbooth's earnings protection logic is designed to take advantage of this effect.
R
Reg T
Standard brokerage margin rules. For covered calls, Reg T requires owning 100 shares per contract sold. Tollbooth assumes Reg T for all non-institutional accounts — one call per 100 shares owned. A 300-share position can have three simultaneous calls; a 75-share position cannot have any.
Rolling
Closing an existing call and opening a new one at a different strike and/or expiration. Done to avoid assignment (rolling the call away from the current price), capture new premium (rolling to a fresh expiration), or both. Tollbooth always rolls for a net credit — never a net debit. The system detects when rolling is necessary using ATR-based triggers rather than fixed percentage thresholds.