Mean Reversion Speed

Mean reversion speed measures how quickly an asset price returns to its historical average or fair value after a deviation. In options trading, this concept is central to pricing volatility, as mean-reverting processes are often assumed for implied volatility levels.

If an asset price deviates significantly from its mean, a trader might bet on a reversal, expecting the price to converge back over time. The speed of this reversion is critical; if it happens too slowly, the cost of carry or margin requirements may erode potential profits.

In crypto markets, mean reversion is often disrupted by sudden liquidity shocks or structural shifts in tokenomics. Understanding the specific velocity of this reversion helps traders time their entries and exits more effectively.

It is a key input for Ornstein-Uhlenbeck models used in pricing derivatives. A faster reversion speed implies lower risk for mean-reversion strategies, while a slower speed suggests higher duration risk.