Updated 2026-08-26 · General education
Why prices become more variable
New information, concentrated positioning, changing liquidity, policy decisions, market structure, and emotion can all increase price movement. The same event may affect assets differently.
Historical and implied measures
Historical volatility summarizes past movement. Implied volatility reflects option-market pricing and assumptions. Both depend on inputs and time windows; neither is a promise.
Liquidity matters alongside volatility
A quoted price can be misleading when little volume is available. Wider spreads and shallow order books may increase execution costs exactly when a fast exit feels most urgent.
Adapt the process, not the story
When conditions change, reassess size, leverage, order type, correlation, and monitoring frequency. Avoid simply rewriting the narrative to justify an unchanged position.
Use scenarios
Consider ordinary movement, a sharp adverse move, a gap, and an extended outage. Scenario work exposes operational needs that a single forecast can hide.