Short Strangle Bankex: Setup, Payoff and Risk Guide
- August 24, 2026
- Posted by: Neeraj Pandey
- Category: Market
Bankex level used in this article: Rs 59,500 (as of illustrative reference level; verify current level on BSE). Next monthly (last Thursday of the month) expiry: 27 August 2026 (Thursday). Lot size 15. Weekly options on Bankex were discontinued in November 2024 under SEBI’s one weekly index per exchange rule; only monthly contracts remain.
Quick Answer
The short strangle Bankex involves selling an out of the money call and an out of the money put on the same monthly expiry, collecting a net credit upfront. With Bankex at Rs 59,500, the short strangle Bankex may profit if the index stays between the two short strikes through the monthly expiry, allowing both options to expire worthless or near worthless. The short strangle Bankex carries unlimited theoretical risk on the upside and large risk on the downside, requiring close active management over the full monthly cycle.
The this strategy differs from a short straddle by using out of the money strikes rather than at the money strikes on both legs. This generally means a lower net credit than a straddle but also a wider profit zone, since the index needs to move further before either short leg is threatened. Because Bankex weekly options were discontinued in November 2024, the short strangle Bankex traders build today runs for the full monthly cycle rather than a single week.
Like other undefined risk strategies, the the position has no protective long options to cap the loss. If the index makes a large move in either direction, losses can grow substantially, which is the central risk consideration before using this strategy.
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What Is the Short Strangle Bankex?
The this trade is a two leg options trade that sells an out of the money call above the current index level and an out of the money put below it, both on the same monthly expiry. The short strangle Bankex generates a net credit at entry, which is the maximum profit, realised when the index closes between the two short strikes at expiry.
The two legs of the this options approach are:
- Sell an out of the money call above the current index level, which loses money if the index rises significantly
- Sell an out of the money put below the current index level, which loses money if the index falls significantly
Because both legs are sold with no protective long options, the short strangle Bankex carries unlimited theoretical loss on the upside and substantial loss potential on the downside. This is the defining risk of the strategy that every trader must account for before entering.
How Does the The spread Work?
With Bankex at Rs 59,500, the short strangle Bankex might use a call strike several hundred points above the current level and a put strike several hundred points below it. Because Bankex only has monthly expiry, the wider distance to the short strikes gives the strategy more room before either leg is threatened, but the position must also weather a full month of potential news and volatility.
| Parameter | Details |
|---|---|
| Index | BSE Bankex (BSE) |
| Expiry | Monthly only, last Thursday of the month. Effective September 2025 (NSE and BSE index expiry swap). Weekly contracts discontinued November 2024. |
| Lot Size | 15 units (effective from January 2026 per NSE circular, reduced from 20) |
| Strategy Type | Neutral, net credit, unlimited risk |
| Legs | 2 (one OTM call sold and one OTM put sold) |
| Max Profit | Net credit received at entry, times lot size |
| Max Loss | Unlimited (upside); substantial (downside) |
| Margin | Varies dynamically. Check live margin on your broker’s calculator before placing any order. |
This strategy: Step by Step Setup
- Open the Bankex option chain on BSE for the next monthly expiry. With Bankex at Rs 59,500, identify strikes at a comfortable distance from the current level on both sides.
- Assess implied volatility for the monthly cycle. Higher implied volatility generally means more credit but also a market pricing in larger expected moves. Verify there are no major events scheduled that fall within the monthly expiry window.
- Sell the OTM call and OTM put simultaneously. Both legs of the short strangle Bankex should be placed at the same time to avoid legging risk.
- Calculate both breakeven points before confirming the the position order. Upper breakeven equals the call strike plus net credit. Lower breakeven equals the put strike minus net credit.
- Set a mandatory stop loss or exit rule before entry. Given the unlimited risk and the full monthly holding period, decide the maximum loss you will accept before placing the order and review the position periodically rather than only at expiry.
Illustrative Payoff: Short Strangle Bankex
Illustrative example for educational purposes only. The this trade carries unlimited theoretical loss potential on the upside. Not a trade recommendation.
Hypothetical setup: Sell 60,200 CE and sell 58,800 PE. Net credit: Rs 290 per unit. Lot size: 15 units.
| Bankex at Monthly Expiry | P&L Per Unit (Rs) | P&L Per Lot (15 units, Rs) | Outcome |
|---|---|---|---|
| Far below 58,510 | Large loss | Large loss | Put loss accelerates |
| 58,510 (lower breakeven) | 0 | 0 | Breakeven |
| 58,800 to 60,200 | +290 | +4,350 | Max profit |
| 60,490 (upper breakeven) | 0 | 0 | Breakeven |
| Far above 60,490 | Growing loss (no cap) | Growing loss | Call loss accelerates |
The maximum profit in the short strangle Bankex is earned when the index closes anywhere between the two short strikes. Moves beyond either breakeven produce losses that grow with the move. The unlimited loss potential on the upside is the defining structural risk of the this options approach compared to defined risk alternatives like the iron condor.
Greeks for the Short Strangle Bankex
Delta: The the spread starts closer to delta neutral than a short straddle because both strikes are out of the money. As the index moves in one direction, the position acquires directional delta that works against it.
Gamma: The short strangle Bankex is short gamma, particularly as the index approaches either short strike near the monthly expiry.
Theta: Theta decay is the primary source of profit for the this strategy. Because the position runs for a full month, total theta accrues gradually and accelerates as expiry approaches.
Vega: The short strangle Bankex is short vega. A rise in implied volatility after entry generally increases the cost of buying back the position, and this effect is more pronounced over a full monthly cycle than a shorter duration position.
When the Short Strangle Bankex May Be Considered
The short strangle Bankex may be considered when implied volatility for the monthly cycle is elevated, providing a larger credit relative to the expected move; no major binary events fall within the expiry window; and the index has been trading in a defined range over recent sessions. These are illustrative conditions, not predictive signals.
When NOT to Use the Short Strangle Bankex
Consider avoiding the short strangle Bankex when a major event is scheduled within the monthly expiry window; the index is in a strong trend; implied volatility is already low, providing insufficient credit to justify the unlimited risk; or you cannot actively monitor the position across the full month.
Risk Management
The unlimited risk profile of the short strangle Bankex demands strict, pre defined risk management. Possible approaches include exiting if the mark to market loss reaches a specified multiple of the credit received; exiting if the index breaches a short strike; converting the position to an iron condor by adding protective long options if a short strike is approached; or using time based exits ahead of the final week when gamma risk increases.
Transaction Costs
Actual returns from the short strangle Bankex are reduced by brokerage, exchange transaction charges, STT, GST, SEBI charges, stamp duty, bid ask spread impact at entry and exit, and slippage. Because Bankex generally has lower liquidity than Nifty 50, these costs can be more pronounced.
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Short Strangle vs Other Bankex Neutral Strategies
| Strategy | Market View | Max Profit | Max Loss | Risk Level |
|---|---|---|---|---|
| Short Strangle | Neutral, rangebound | Defined (net credit) | Unlimited | Medium High |
| Short Straddle | Neutral, minimal movement | Defined (net credit, higher) | Unlimited | High |
| Iron Condor | Neutral, rangebound | Defined (net credit) | Defined (spread minus credit) | Medium |
The short strangle Bankex collects less premium than a short straddle because it uses out of the money strikes, but offers a wider profit zone. Traders who prefer defined risk may find the iron condor a more appropriate starting point than the short strangle Bankex.
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Conclusion
The short strangle Bankex offers a wider profit zone than a short straddle in exchange for a lower net credit, and like other undefined risk strategies requires disciplined management across the full monthly cycle. Because Bankex only trades monthly contracts, the position is exposed to a longer stretch of potential news than a Nifty 50 weekly equivalent. Consult a SEBI registered investment advisor and verify current contract specifications on NSE before executing any trade.
Disclaimer: Data and figures in this article are sourced from publicly available information and may or may not be accurate. All examples are illustrative and hypothetical only. Please verify all data including contract specifications, lot sizes, and expiry schedules with the official NSE (nseindia.com) and BSE (bseindia.com) websites before making any investment decision. Investments in securities are subject to market risk. This content is for educational purposes only and is not investment advice by Univest (SEBI RA INH000013776).
Frequently Asked Questions
What is the short strangle Bankex?
Ans. The short strangle Bankex involves selling an out of the money call and an out of the money put on Bankex, both on the same monthly expiry, collecting a net credit upfront. It may profit when the index stays between the two short strikes through expiry. Maximum loss is theoretically unlimited on the upside.
Does Bankex have weekly strangle options?
Ans. No. Weekly options on Bankex were discontinued in November 2024. The short strangle Bankex uses only the monthly contract, which expires on the last Thursday of the month.
What is the maximum profit in the short strangle Bankex?
Ans. The maximum profit is the net credit received when both options are sold, multiplied by the lot size of 15 units. This is earned when the index closes anywhere between the two short strikes at the monthly expiry.
What is the maximum loss in the short strangle Bankex?
Ans. The short strangle Bankex has theoretically unlimited loss on the upside and large loss on the downside, since there are no long options to cap either side. A committed stop loss or exit rule is essential.
How does the short strangle Bankex differ from a short straddle?
Ans. The short strangle Bankex sells out of the money strikes on both sides, generally collecting less premium than a straddle’s at the money strikes but offering a wider profit zone before either leg is threatened.
What is the current lot size for Bankex options?
Ans. The Bankex lot size is 15 units effective from January 2026, reduced from 20. Always verify the current lot size on nseindia.com before placing any order.
Is the short strangle Bankex suitable for beginners?
Ans. Given the unlimited risk profile, the short strangle Bankex is generally better suited to traders with prior options experience and a clear, pre committed exit plan rather than complete beginners.
