Gamma Scalping Explained: Profiting From Movement, Not Direction
Gamma scalping is how long-options traders monetise volatility by re-hedging delta as the underlying moves. Here's the intuition and the mechanics.
Short answer: Gamma scalping means holding long options (positive gamma) and repeatedly re-hedging delta as the underlying moves — buying low and selling high mechanically — to capture profit from realised movement. It pays off when the market actually moves more than the option's implied volatility predicted.
The intuition
A long-options position has positive gamma: as spot rises, your delta rises; as spot falls, your delta falls. If you keep flattening that delta with the underlying (or futures), you're systematically selling into strength and buying into weakness — locking in small gains from each swing.
The cost
You pay theta (time decay) to hold those long options. Gamma scalping is profitable only when the cash captured from re-hedging exceeds the theta you bleed. In short: realised volatility must beat implied volatility.
Mechanics
- Hold a long-gamma position (e.g. long straddle).
- Set a delta band (e.g. re-hedge when net delta drifts ±X).
- When breached, trade the underlying/futures to flatten delta — booking the move.
- Repeat. Profit = scalped cash − theta paid.
This is the mirror image of short-premium delta-neutral trading, and it's adjustment-heavy — ideal to automate so you never miss a re-hedge.
FAQ
Is gamma scalping for beginners? It's an advanced, hands-on technique. Understand the Greeks and delta hedging first.
When does it lose money? When the market is quiet — realised volatility stays below implied, and theta decay outpaces your scalped gains.
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