Update account value with US AH and PM prices

It would be really cool if US stocks prices were updated with after hours/pre market data, especially since there can be huge moves. Is this possible?

Will it make any difference as long as we don’t have access to trade on those times neither on invest nor ISA? Nothing else than numerical difference in portfolio or you need this for some other reason?

Monitoring purposes so that I know where to set stop/limit.
Looking forward to when we can trade AH/PM - end of Q3 fRom what I read.

I know it would be easier to have everything at one place, but did you considered looking for those from different sources?

Yes I have and I do. Excellent suggestion.