[Option intraday historical data]

9 hours ago, Elroch said:

You can download it. The problem is the limit of 10,000 datapoints per week is tiny when there are calls and puts for many strikes.

Thanks for that answer Elroch. Can you tell us how to do that download? I can't see anything obvious.

[Options on Nikkei 225 with Low IV]

Anyone know why the Volatility on the Nikkei index options are so low this week? I've never seen them this low but the ranges aren't that modest.

[Options price basis versus underlying price]

I wanted to understand where the price which an option is based on is derived from.

Example:  The Japan 225 cash may be at 29000

But the Daily Options are based on a value  29040

Then say  at expiry, if the CFD Japan 225 closes at 29000, the 29000 Call should be zero or very close. But it settled at 30 ITM.

So the question what is the settlement basis of Daily options for Indices such as the Japan 225?