Theta Explained: Meaning, Types, Process, and Risks
Theta is the option risk measure that shows how much a derivative’s value is expected to change as time passes, assuming other inputs stay unchanged. Traders often call it *time decay*, but in risk management, controls, and compliance, theta is more than a trading idea: it affects pricing, hedging, P&L forecasting, governance, and limit monitoring. If you use, approve, audit, or study options, understanding Theta helps you see how the clock itself creates risk and opportunity.