The gamma flip nobody's talking about

Most traders think 0DTE is just "fast options trading."

They're missing the real story.

The real story is gamma.

And when gamma flips, everything changes.

Positive Gamma = Sticky Markets

In positive gamma environments, dealers are net long gamma.

Their hedging dampens volatility.

When markets move higher, dealers sell futures to stay delta-neutral.

When markets move lower, dealers buy futures.

This creates the "sticky" price action we see constantly.

Markets that grind slowly with frequent reversals at technical levels.

CBOE's study shows 0DTE gamma is positive approximately 75% of trading days, reducing volatility by 0.19-2.1 percentage points daily.

This explains extended low-volatility periods despite massive 0DTE volume.

Negative Gamma = Explosive Moves

But the other 25% of days tell a different story.

When gamma flips negative, dealers become net short gamma.

Their hedging amplifies rather than dampens moves.

These negative gamma days boost volatility by up to 3.3 percentage points daily.

Or 6.4 percentage points in 30-minute windows.

Real Example

One documented case:

20-point SPX drop after a technical break where 0DTE puts trading at $0.30 exploded to $2.10 — 700% gain — within minutes.

Rapid delta hedging forced dealers to sell futures aggressively.

Amplifying what started as a modest technical break.

Understanding When Gamma Flips

These typically occur when markets break through levels where large 0DTE positioning is concentrated.

Example:

SPX trading at 6,800 with massive 0DTE call positioning at 6,800 strikes.

Dealers are likely net short those calls and long gamma.

But if SPX breaks above 6,800 and approaches 6,825, those calls move deep ITM, forcing dealers to hedge by buying futures.

This buying pushes SPX to 6,850, creating momentum-reinforcing action.

These gamma flip points are predictable based on positioning data.

You Don't Need to Trade Faster

You need to trade cleaner.

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• Why 0DTE feels chaotic — and how structure removes that feeling
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Markets aren't slowing down.

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To your success,

Don Kaufman