Regime Shifting: Gamma Regime Transition Signal

This signal builds on two concepts already covered: the Long Gamma Regime and the Short Gamma Regime (/docs/long-gamma-vs-short-gamma-regime), and the Flip (/docs/gamma-flip-explained). It helps to have those clear before continuing.

It applies the same way for any index, future, or stock whose net gamma you follow on the platform.

What Regime Shifting Is

Regime Shifting is the signal indicating that the market is transitioning from one gamma regime to another, in the zone near the Flip. It marks the moment when the dealer's hedging dynamic starts to move between the Long Gamma Regime and the Short Gamma Regime.

Why It Happens Near the Flip

The Flip is the price where the market's net gamma changes sign. Above it, the market operates in the Long Gamma Regime, with hedging that stabilizes price. Below it, it operates in the Short Gamma Regime, with hedging that amplifies movement. The band around the Flip concentrates the biggest shift in dealer behavior, and that is where the Regime Shifting signal appears.

stateDiagram-v2
    [*] --> LongGammaRegime
    LongGammaRegime --> RegimeShifting: Price approaches the Flip
    RegimeShifting --> ShortGammaRegime: Price crosses the Flip downward
    ShortGammaRegime --> RegimeShifting: Price approaches the Flip
    RegimeShifting --> LongGammaRegime: Price crosses the Flip upward

How to Read the Signal

The Regime Shifting signal gains relevance in three situations: when the underlying's price crosses the Flip repeatedly within the same session, when it approaches the Flip as net gamma nears zero, or when net gamma changes sign between consecutive sessions.

A sustained cross above the Flip moves the market toward the Long Gamma Regime, with tighter ranges and mean-reversion reactions. A sustained cross below moves the market toward the Short Gamma Regime, with wider ranges and momentum reactions.

What to Watch in Practice

Three things are worth tracking alongside the signal: the distance between price and the Flip, the speed at which net gamma approaches zero, and how price behaves around Call Resistance, Put Support, Long-wall, and Short-fuel while the transition unfolds. Those intraday levels tend to move first and hint at which regime the session is leaning toward.

Key idea: Regime Shifting is a transition signal that appears in the zone where the market moves from one gamma regime to the other, around the Flip.

With the Flip, Call Wall, Put Wall, Long-wall, Short-fuel, Call Resistance, Put Support, Expected Move, Buy/Sell Pressure, and Regime Shifting, the platform's full map of levels and signals is covered.