I had tried to build a strategy in Dhan strategy builder. strategy is Calander spread with combination of future & option. same strategy is also created in sensibull. Why huge difference in payoff graph? which one is correct?

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Hi @rinku

At Dhan, we calculate pay-off graph values based on the Underlying Index as Spot. Other platform use Futures as Spot. Both the calculations are correct. The value difference is high when expiry is near.

Theoretically, Index price is the correct basis for calculating the options pay-off graph as the underlying for all the options are Index.

Hope this clarifies.

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