The definition of breakeven on an options spread — the underlying price at which the trade results in zero P&L at expiration.

The definition of expected move on an underlying — the implied one-sigma range derived from option prices, scaled to time.

The definition of implied move from ATM premium — the simple shortcut for estimating an underlying's expected range.

The definition of mark price in options trading — the broker's mid-price reference, and why it can mislead on wide-spread options.

The definition of the natural price of an options order — the bid (to sell) or ask (to buy) you'd pay to fill right now.

The definition of a payoff curve in options trading — the P&L line plotted against underlying price at a given moment.

The definition of probability of profit (POP) — the chance a spread closes above breakeven at expiration, given assumptions.

The definition of the risk budget per trade used inside the 0DTE tools — and how the calculators apply it.

The definition of a risk graph in options trading — the broader chart that shows profit zones, loss zones, and breakevens at once.

The definition of trade plan export inside the 0DTE Solutions tools — the PDF/CSV output and the fields it includes.