The rules at a glance
- Long straddle: buy the at-the-money call and put on the same expiry; you need a move bigger than the total premium, in either direction
- Short straddle: sell the same two options; you profit if the Nifty stays near the strike, and the loss is unlimited
- Breakevens: the strike plus and minus the total premium (about ±1.2% in the example)
- Volatility: a long straddle loses value if volatility falls (for example after an event), a short straddle gains
- Exit: long: sell when the move comes or cut the loss at a set share of the premium; short: buy back if the premium rises by half
Long straddle: paying for a move
Buy the at-the-money call and the at-the-money put. Whichever way the Nifty moves, one of them gains. The catch is that you've paid for both, so the move has to be bigger than the total premium before you make money. If the Nifty sits still, time decay eats both options.
Profit or loss at expiry If closed with 3 days left (estimate)
| Leg | Strike | Premium | For one lot of 65 |
|---|---|---|---|
| Buy | 25,000 CE | 166.00 | 10,790.00 |
| Buy | 25,000 PE | 141.35 | 9,187.75 |
| Long straddle, 1 lot | |
|---|---|
| Net premium | ₹19,978 paid |
| Maximum profit at expiry | Unlimited |
| Maximum loss at expiry | ₹19,978 |
| Breakeven at expiry | 24,692.65 and 25,307.35 |
| If the Nifty is unchanged at expiry | −₹19,978 |
| If the Nifty is 2% higher or lower at expiry | ₹12,522 |
| If the Nifty is 4% higher or lower at expiry | ₹45,022 |
The straddle costs 307.35 points, so the Nifty has to move about 1.2% by expiry just to break even. A 2% move makes a modest profit; a 4% move a large one. The most you can lose is the premium.
Volatility and the IV crush
Before a big event such as the budget or an RBI decision, option buyers bid up premiums because they expect a move. Once the event is over, that extra volatility drains out of the prices, even if the Nifty moved. Traders call this the IV crush. Here's the model value of the same straddle a day later, with the Nifty unchanged, at three volatility levels:
| Volatility a day later | Straddle value (model) | Change for one lot |
|---|---|---|
| 12% | 280.55 | −₹1,742 |
| 10% | 233.95 | −₹4,771 |
| 9% | 210.65 | −₹6,286 |
A day of time decay alone costs about ₹1,742 a lot here. A drop in volatility from 12% to 9% makes the loss more than three times as big. Buying a straddle before an event only works if the move is bigger than the market already expected.
Short straddle: selling the range
Sell the same call and put instead. You collect ₹19,978 for one lot, the most premium of any common selling strategy, and keep it all if the Nifty finishes exactly at 25,000. Every point away from the strike costs you, and the loss has no limit. The breakevens are the same as the long straddle's: 24,692.65 and 25,307.35.
| Short straddle, 1 lot | |
|---|---|
| Net premium | ₹19,978 received |
| Maximum profit at expiry | ₹19,978 |
| Maximum loss at expiry | Unlimited |
| Breakeven at expiry | 24,692.65 and 25,307.35 |
| If the Nifty is 2% higher or lower at expiry | −₹12,522 |
| If the Nifty is 4% higher or lower at expiry | −₹45,022 |
| STT on the two sales (0.15%) | ₹30 |
Compared with a short strangle, the straddle collects about five times the premium but starts losing on a much smaller move. Many sellers hedge it by buying further options either side, which turns it into an "iron butterfly" with a fixed maximum loss.
Rules for each side
Long straddle
- Buy only when you expect a move bigger than the breakevens, and when premiums aren't already inflated by an obvious event.
- Sell when the move comes; don't wait for expiry, because time decay keeps working against you.
- Cut the trade if it has lost a set share of the premium, such as half, with no move in sight.
Short straddle
- Avoid event weeks and size for a 4% move.
- Buy back if the combined premium rises by half; it has much less room than a strangle.
- Prefer the hedged version (buy protective options): no account can absorb an unlimited loss.
How to test it before you trade it
TradingView's Strategy Tester works on one chart at a time, so it can't test a multi-leg option strategy that sells new strikes every week. Testing an option strategy works differently from the chart strategies on this site.
- Check the shape with today's prices. Put the live premiums into the payoff calculator and note the breakevens, the maximum loss and the result if the Nifty moves 2% or 4%.
- Check the margin. Use your broker's margin calculator for the whole position. Hedged positions need much less than naked ones.
- Backtest on past option prices. Some Indian platforms, such as AlgoTest, let you test option strategies on historical Nifty option data. Include costs and slippage.
- Paper trade it first. Paper trade both sides around a few events and a few quiet weeks, and compare what you expected the move to be with what happened.
- Keep a journal. Write down the entry, the exit, the reason and the result for every trade. A trading journal shows quickly whether your exits follow your rules.
With one trade per weekly expiry, 100 trades take about two years. Judge a selling strategy on a long sample: it can win for months and then give much of it back in one bad week.
Try it in the payoff calculator, and get the PDF
Open the straddle in the free payoff calculator with these legs filled in, then type in today's premiums from your option chain to see the real breakevens and maximum loss. The PDF is a one-page cheat sheet with the rules, the payoff diagram and a checklist.
Nifty options and the rules in India
Nifty options trade on NSE and are legal for residents through a SEBI-registered broker. SEBI tightened the rules for index derivatives in stages: from 20 November 2024, weekly options on only one benchmark index per exchange, a minimum contract value of ₹15 lakh and an extra 2% extreme loss margin on short options on expiry day; from 1 February 2025, option premiums collected upfront. Since 1 April 2026, STT on options sold is 0.15% of the premium. Check your broker's current margin and charges before you trade.
The odds are worth knowing. SEBI found that 93% of individual traders in equity futures and options lost money over FY22 to FY24, and 91% did in FY25. Nothing on this page is advice about what the Nifty will do; it explains how the strategy works and what it risks.
Related strategies: Nifty option selling, short strangle, iron condor, bull put and bear call spreads, opening range breakout, VWAP pullback. Build any of them in the payoff calculator. All 34 strategies are compared on one page on the trading strategies page.