The Afternoon Drift Into Gravity: Scalping the 2pm Pull
On a quiet, positive-gamma day, the afternoon has a gentle gravitational pull. Price that stretched in the morning tends to drift back toward the center — a slow, tradeable magnet.
On a calm, positive-gamma day, the afternoon frequently drifts price back toward gravity — the |gamma|-weighted center of the book. As the morning's move loses steam and dealer hedging keeps leaning against extension, the pull toward the center reasserts, and that slow drift is a low-drama scalp.
Why the afternoon drifts
Two forces align. In positive gamma, hedging mean-reverts price toward the center, and as expiration nears, the gamma effect intensifies the pin, so a price stretched away from gravity by the morning tends to get magnetized back in the afternoon. It's the reversion-to-gravity trade with a time-of-day tailwind.
Entry, target, stop
Entry: a rejection at the stretched extreme (a wall or expected-move edge) with gravity above/below as the target — fade the stretch. Target: gravity, the center. Stop: a decisive break of the extreme in the stretch's direction — that says the day is trending, not drifting.
On a calm day, the afternoon leans toward the center. Fade the morning's stretch back to gravity — slow, small, and repeatable.
When it fails
The drift assumes a calm regime. If price ignores gravity and keeps extending, or a regime flip hits in the afternoon, the pull is gone and you're fighting a trend. And mind the clock: this is an afternoon trade, so the theta cliff and the close are approaching — take the drift's move and don't overstay. NoVo draws gravity live so you can see whether the afternoon is drifting to it or leaving it behind.
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NoVo is a software tool for market analysis, not financial advice. This article is general education, not investment advice. Options trading involves substantial risk of loss, up to and including your entire capital. NoVo makes no guarantee of profit, win rate, or performance, and past results do not predict future outcomes. You are responsible for your own broker account, configuration, and trading decisions.
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