{"id":218229,"date":"2026-08-25T11:08:03","date_gmt":"2026-08-25T05:38:03","guid":{"rendered":"https:\/\/univest.in\/blogs-2\/?p=218229"},"modified":"2026-08-25T11:08:05","modified_gmt":"2026-08-25T05:38:05","slug":"box-spread-bankex","status":"publish","type":"post","link":"https:\/\/univest.in\/blogs-2\/box-spread-bankex\/","title":{"rendered":"Box Spread Bankex: Setup, Payoff and Risk Guide"},"content":{"rendered":"
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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.<\/em><\/p>\n

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Quick Answer<\/strong><\/p>\n

The box spread Bankex combines a bull call spread and a bear put spread using the same two strikes and the same expiry, creating a position whose payoff at expiry is fixed and equal to the difference between the two strikes, regardless of where Bankex closes. With Bankex at Rs 59,500, the box spread Bankex is not a directional or volatility trade like the other strategies in this series; it is a combination of four options that, in theory, produces the same outcome no matter how the index moves, making it more of a financing or arbitrage tool than a speculative position.<\/p>\n<\/div>\n

Because the box spread Bankex has a theoretically fixed payoff at expiry, the difference between the fixed payoff and the net debit or credit paid to establish the position implies a rate of return, similar to a fixed income instrument. This is why box spreads are sometimes used to effectively borrow or lend money through the options market, when the implied rate is more favourable than other financing alternatives.<\/p>\n

In practice, transaction costs, bid ask spreads, and pricing inefficiencies mean the theoretical arbitrage from a this strategy is rarely large enough to be meaningfully captured by retail traders after costs, and the strategy is more commonly discussed for its educational value in illustrating options pricing relationships than as an active retail trading strategy.<\/p>\n

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