Long straddle gamma scalp
Gamma scalping turns a long straddle into a trading engine. This strategy buys the at-the-money NIFTY weekly call and put, then watches the position's delta every minute. Whenever the market's move pushes delta beyond one futures lot, it buys or sells NIFTY futures to bring it back to zero, which locks in part of each swing. The aim is for those hedging gains to outrun the straddle's time decay.How it trades
Results
PRE-BUILT · DEFAULTSWhere it made and lost money
Gamma scalping is paid by movement and charged for stillness, and this test showed both sides sharply. The 45 trades during which NIFTY stayed within ±1% lost ₹7,36,410, with a 24% win rate: there was little to hedge, so the straddle simply decayed. Trades during which NIFTY fell more than 1% made ₹2,59,841 and those during a rise of more than 1% made ₹2,38,786. Entry-day type mattered just as much: 29 choppy days earned ₹3,91,540, as back-and-forth swings let the futures hedges buy low and sell high repeatedly, while 51 quiet sessions lost ₹3,95,711.
About this strategy
- At 09:30, if flat, buy the ATM call and put of the nearest NIFTY weekly expiry with at least five calendar days left.
- Size the straddle so that a 90-point move shifts its delta by about one futures lot, capped at 10 lots.
- Every minute, add up the options' delta and any futures held; if the net is more than one lot away from zero, trade whole futures lots to bring it back, closing wrong-side hedges first.
- Take profit when the straddle's implied volatility is 20% above its level at entry.
- Stop if the position loses 20% of the premium paid within a single session.
- From the third session, at 15:00 daily, close if the futures scalps over the last three sessions earned less than the straddle's time decay over those days.
- Otherwise exit at 15:15 one trading session before expiry.
Why traders use it
A long straddle gains on big moves but bleeds time value every day. Gamma scalping tries to earn from smaller moves too: as the market rises, the straddle becomes long, so selling futures banks the gain; as it falls back, buying futures banks it again. Professional volatility traders use this to profit when actual movement exceeds what option prices implied. It also gives a clear way to judge the trade, since hedging profit can be compared directly with the theta being paid.
The year in plain words
On NIFTY from 1 Oct 2025 to 30 Sep 2026 with default settings, the strategy made 111 trades, won 39%, and lost ₹2,66,256 before costs, a profit factor of 0.82. Results were large on both sides: the best trade made ₹1,59,380 and the worst lost ₹1,46,575. The IV-spike target closed 86 trades and the theta test 20. October and January to March were profitable, with January and February earning about ₹75,000 each, but every month from April to September lost. Each hedge is a futures round trip on top of a multi-lot straddle, so costs were heavy: after ₹20 per order and bid-ask slippage the loss was ₹5,31,751.
What the settings do
Risks
- Time decay is paid every day, and quiet markets can drain the premium faster than hedges earn.
- Every hedge is a futures round trip, so brokerage and spreads multiply quickly with a tight band.
- The hedge is the monthly future rather than the weekly option's own underlying, so the basis between them adds noise.
- Gamma sizing can buy up to 10 lots of straddle, making both wins and losses large.
Who it suits
Experienced options traders who understand delta and gamma, can run automated minute-by-minute hedging, and have margin for both a multi-lot straddle and futures. It is better seen as a study of volatility trading than a simple directional bet.
Questions traders ask
What is gamma scalping?
It is a way of trading a long option position by repeatedly hedging its delta with the underlying. When the market rises, a long straddle gains delta, so you sell futures; when it falls, you buy them back. Each round trip locks in part of the swing, aiming to earn more than the option's time decay.
Is long straddle gamma scalping profitable?
Not in this test. On NIFTY from 1 Oct 2025 to 30 Sep 2026 it lost ₹2,66,256 before costs and ₹5,31,751 after ₹20 per order and bid-ask slippage (statutory charges not included), with a maximum drawdown of ₹5,37,985 before costs. Past results do not guarantee future ones.
What does the theta-versus-scalps exit check?
From the third session, it compares the profit made by futures hedges over the last three sessions with the time decay the straddle cost over the same days. If hedging is not keeping up with decay, the market is too quiet for the strategy and the position is closed.
Why exit when implied volatility spikes?
A long straddle gains value when implied volatility rises, even without a large move. A 20% jump over the entry level is treated as a windfall worth taking, since volatility spikes often fade quickly.