If you’re referring to the difference between the price of the spot contract and the price of the futures contract, then perhaps, it’s worth distinguishing that, we offer futures contract indices rather than spot contract indices on our platform. I’ll explain why that’s important below:
As you already know, futures don’t distribute dividends, similarly to the spot ones - It’s reflected in their price.
When it comes to spot instruments, the dividend distribution on a particular day is reflected as a proportional downward drop in the price, which is not present in the futures price. That’s why the futures contract has a higher spread to compensate for that very same difference. Hence, the reason, for the mismatch.