Gravity is the center of mass of the dealer book, and in a calm regime it's a reliable magnet. But its pull depends entirely on the regime, and on a trend day the magnet doesn't just weaken — watching it fail tells you what kind of day you're in.

Why the magnet fails

Gravity pulls because positive-gamma hedging leans price back toward the center. Below the gamma flip, that hedging inverts and amplifies moves instead — so price accelerates away from gravity rather than returning to it. Even in positive gamma, a strong directional day with real order flow can overpower the pull. The magnet is a tendency, not a law.

Reversion to gravity is the calm-day base case. A clean break through it, with no snap-back, is the market telling you today isn't a calm day.

The failed magnet as a signal

This is the useful part: when price reaches gravity and keeps going — no reaction, no reversion — that failure is a trend-day tell. The level that should have pinned it didn't, which means the reversion flow isn't in control. That's your cue to stop fading and switch to a momentum posture.

How to trade it

Use gravity as a regime probe. If fades to gravity are working, you're in a range/reversion day — keep trading toward it. If price slices through it and doesn't look back, respect the trend, don't keep fading, and let the failed magnet reset your whole read of the session. A level ignored is as informative as a level respected.