Iron condors and butterflies (India)

🎯 In 30 seconds: An iron condor is a bull put spread plus a bear call spread on the same index and expiry. You collect a credit and keep all of it if the Nifty settles between the two short strikes. A butterfly aims at one price and pays the most if the index settles right there. Both are bets that the market moves less than option prices expect. They win small and often, lose bigger and less often, and one event day (results of a general election, a policy surprise, a global sell-off) can undo months of gains.

Neutral strategies in plain words

Most trades need a direction. A neutral strategy makes money when the market goes nowhere much. You are not betting on a price. You are betting that the move the market expects, which is built into option prices as implied volatility, is bigger than the move that actually happens. See Implied volatility and India VIX.

Think of a chai stall owner who sells umbrellas to office workers on cloudy mornings at ₹50 more than usual. Most days it does not rain much, and the extra ₹50 is profit. On the day of a cloudburst, he must refund everyone whose umbrella broke. The extra money came from people paying for protection against a storm. Condors and butterflies collect that kind of money.

The payment arrives through time decay. Options lose value as expiry approaches if the index does not move (see The Greeks, theta). These trades are built so that time works for you and a large move works against you.

Both are made from the vertical spreads in the previous chapter. If you are comfortable with those, these are two verticals side by side.

The option prices used here

A hypothetical Nifty 50 level of 25,000 and a hypothetical chain expiring in 14 days, from a Black-Scholes model at 13% volatility. One lot is 65 units for contracts from January 2026 (NSE circular, 3 October 2025). NSE revises lots periodically, so check before trading.

Strike	Call	Put
24,400	708	47
24,600	547	85
24,800	405	143
25,000	286	224
25,200	192	329
25,400	122	459
25,600	73	609

The iron condor

Four legs, one expiry:

Sell the 24,600 put	+85
Buy the 24,400 put	-47
Sell the 25,400 call	+122
Buy the 25,600 call	-73
Net credit	87 points = ₹5,655 per lot

The put side is a bull put spread. The call side is a bear call spread. Each wing is 200 points wide.

Max profit = net credit x lot = ₹5,655, anywhere from 24,600 to 25,400 at expiry.
Max loss = (wing width - credit) x lot = (200 - 87) x 65 = ₹7,345, below 24,400 or above 25,600.
Lower breakeven = short put strike - credit = 24,513.
Upper breakeven = short call strike + credit = 25,487.

Profit and loss in rupees for one lot at expiry, before charges. The trade keeps the full credit anywhere between the short strikes and loses at most ₹7,345 beyond the wings. Prices are hypothetical.

Only one side can lose at expiry, because the Nifty cannot settle both below 24,400 and above 25,600. That is why the maximum loss is one wing minus the credit, not two.

The butterfly

A long call butterfly uses three strikes, evenly spaced, all calls:

Buy 1 lot of the 24,800 call	-405
Sell 2 lots of the 25,000 call	+572
Buy 1 lot of the 25,200 call	-192
Net debit	25 points = ₹1,625

Max profit = (wing width - debit) x lot = (200 - 25) x 65 = ₹11,375, only if the Nifty settles at exactly 25,000.
Max loss = debit = ₹1,625, below 24,800 or above 25,200.
Breakevens = 24,825 and 25,175.

The butterfly risks only ₹1,625 per lot, but its best result needs the Nifty to settle right at 25,000. A few hundred points either way and the trade is back to its small loss.

The payoff ratio looks wonderful: risk ₹1,625 to make ₹11,375. The catch is the shape. The peak is a single point. The chance the Nifty settles at exactly 25,000 is small, and most of the time you finish on the slopes or on the flat loss.

The iron butterfly

An iron butterfly builds the same shape from puts and calls and pays a credit instead:

Sell the 25,000 call and the 25,000 put	+510
Buy the 25,200 call	-192
Buy the 24,800 put	-143
Net credit	175 points = ₹11,375

Max profit = credit = ₹11,375, at exactly 25,000.
Max loss = (200 - 175) x 65 = ₹1,625.
Breakevens = 24,825 and 25,175, the same as the call butterfly.

The two versions have the same payoff because of put-call parity (see How options are priced). In practice they differ in margin and in which legs are liquid. The iron version has two short legs at the most active strike, which is often the cheapest to trade.

Condor or butterfly?

	Iron condor	Butterfly
Profit zone	A wide range (24,600 to 25,400 here)	A peak at one price
Max profit vs max loss	₹5,655 vs ₹7,345	₹11,375 vs ₹1,625
How often it pays something	Often	Less often
What hurts it	A big move either way	Any move away from the centre

The condor's breakeven win rate is easy to work out. If every trade ended at either maximum profit or maximum loss, you would need to win ₹7,345 / (₹5,655 + ₹7,345) = 56.5% of the time just to break even, before costs. Real trades end in between, but the point holds: a high win rate is required, not a bonus.

Margin and the India-specific rules

NSE Clearing's SPAN looks at the whole four-leg position, so the scenario part of the margin is limited by the condor's maximum loss. But extreme loss margin (ELM) applies to each short option on its notional value: 2% for short index options, per NSE's margin page (October 2026). A condor has two short legs, so that is 2 x (2% x 25,000 x 65) = ₹65,000 of ELM on a hypothetical 25,000 Nifty, plus SPAN. The total blocked is many times the ₹7,345 you can lose. Your broker's calculator shows the live figure.

Expiry day. SEBI added a further 2% ELM on short index options on their expiry day from 20 November 2024. For a condor held into expiry morning, that is roughly another ₹65,000.
Upfront premium. Since 1 February 2025, net premium payable must be collected upfront. A butterfly's net debit is blocked before the trade.
Legging. If you sell the short options first, the system sees naked shorts until the wings are bought. Many traders buy the wings first or use a basket order.
Costs. Four legs mean four sets of brokerage and charges, and STT of 0.15% of premium on every option you sell from 1 April 2026. A condor that collects 87 points can lose a visible part of that to costs, more if you close it before expiry.

Expiry-day condors: India's crowded trade

Weekly Nifty options expire on Tuesday on NSE, and weekly Sensex options on Thursday on BSE (October 2026). Many traders sell condors and iron butterflies on the morning of expiry, when time value is about to vanish. SEBI's August 2026 study found that in FY26, 59% of index options turnover happened on the expiry day itself, down from 70% in FY25.

The appeal is speed: decay that takes two weeks on a 14-day condor happens in hours. The cost is that there is no time to recover from a move, the extra 2% ELM applies, and the gamma (how fast the position's risk changes) is at its highest. A 150-point move in the afternoon can take an expiry-day condor from full profit to full loss. Managing options risk covers expiry day in detail.

When they tend to work, and when they do not

Implied volatility is high and then falls. You sell options when they are expensive. If the expected storm does not arrive, prices drop and you can close cheaply. India VIX gives a rough read of how expensive Nifty options are.
Time passes with no big news. Each quiet day is a little decay in your favour.
They struggle when the market trends. A steady climb or fall through one short strike turns the condor into a losing directional bet.
They get hurt by scheduled events if you hold through them without pricing them: RBI policy announcements, the Union Budget, state or general election results, and major US data released while Indian markets are closed.

Practical tip

Decide your exits before you enter, and write them down. Common choices: close when you have captured a set share of the maximum profit (some traders use half), close if the loss reaches a set multiple of the credit, and close the day before expiry or before a known event. Rules you set while calm are easier to follow than decisions you make while losing.

Managing a condor that is in trouble

Suppose the Nifty climbs from 25,000 to 25,450 a week in. Your 25,400 call is now in the money. You have three honest choices:

Close the whole position and take the loss so far. Simple and final.
Close only the threatened side (the call spread) and keep the put spread, which is now almost worthless. You are no longer neutral, so do not pretend you are.
Roll the call spread up, buying back the 25,400/25,600 and selling, say, 25,800/26,000. This usually costs money now and re-centres the trade. It is a new trade with new risk, and every roll adds charges.

There is no fix that makes the loss disappear. Adjustments move risk around. They do not remove it.

The risk of one big day

A condor might collect ₹5,655 in a good fortnight. One sharp day beyond the wings costs ₹7,345, more than one good result. Two such days and months of small wins are gone.

Big days do happen. On 4 June 2024, the day of the general election results, the Nifty 50 closed 1,379.40 points lower, a fall of about 5.9%. Any short condor or iron butterfly near the money that day went to its maximum loss, and anyone selling naked options without wings lost far more.

Common mistake

Trading a condor because the platform says it "has a 70% chance of profit". That figure comes from a model and the current implied volatility. It says nothing about whether the trade has a positive expected value, and it ignores the size of the losses. Always look at the maximum loss and ask how many winning trades it would erase.

Try it

On the NSE option chain, pick a Nifty expiry about two weeks away with no RBI policy, Budget or election result in between. Build, on paper:

An iron condor with short strikes roughly 400 points either side of the current level and 200-point wings. Use the mid of bid and ask.
A long call butterfly centred on the strike nearest the current level, with 200-point wings.
For each, write the credit or debit, maximum profit, maximum loss and breakevens in rupees for one lot in your trading journal, plus the margin your broker's calculator shows.
Check India VIX on the day you set it up, and again at expiry.
On expiry day, record where the Nifty settled and the result of each trade. Repeat for five expiries before drawing any conclusion.

Check yourself

What is an iron condor made of? Answer: A bull put spread plus a bear call spread on the same underlying and expiry.
A Nifty condor with 200-point wings collects 87 points on a 65-unit lot, short strikes 24,600 and 25,400. Maximum profit, maximum loss and breakevens? Answer: ₹5,655, ₹7,345, and breakevens at 24,513 and 25,487.
Why can a condor lose on only one side at expiry? Answer: The index cannot settle both below the put wing and above the call wing at the same time.
Why is the margin for a condor far bigger than its maximum loss? Answer: Exposure margin is charged on each short leg's notional value (2% for index options), on top of SPAN, and another 2% applies on expiry day.
Where does a long call butterfly make its maximum profit? Answer: Only if the index settles exactly at the middle strike.

🦋 Iron condors and butterflies: betting on a quiet market