Gravity is the |gamma|-weighted center of the dealer book — the price positioning pulls toward in a stabilizing regime. Its magnetism is strongest precisely when the market is calm, so a quiet, positive-gamma day is where trading toward it shines.

Why quiet days favor the magnet

On a low-volatility day, dealers are long gamma and hedging leans against every push — selling strength, buying weakness. That flow is exactly what drags a stretched price back toward the center. There's no strong trend to overpower it, so gravity behaves like a genuine mean-reversion target rather than a level price blows past.

Boredom is the setup. A calm, positive-gamma tape is when gravity actually pulls — and when fading the edges back to it pays.

The play

When price stretches toward the call or put wall on a quiet day, gravity is the natural objective for a fade back toward the middle. Enter at the extreme, target gravity, and stop beyond the wall where the idea is wrong. When price is sitting on gravity, expect chop and stand aside — the book is balanced and there's little pull either way.

The one condition

This works because the regime is calm. The moment the day turns into a trend or price crosses below the gamma flip, the magnet weakens and fading toward gravity becomes fighting the tape (see when price ignores gravity). Check the regime first; gravity is a reversion tool for a reversion market, not a reason to fade a trend.