as far as the end price, thats more easily gauged after the weekend. you can see how it was received and the following monday number are good indicators. i usually take the actual weekend and just multiply by 2.7 or what the previous multiplier was for the original. adjust that number based on your gut and prior info you have read. that's just what i do. others im sure will be MUCH more thorough math with data but it has worked for me and gets close enough to the number to make an informed decision on whether its worth to hold on to. being a billionaire, you shouldn't have to worry about that much.
just as an example if IT2 does 92M. i'll look at the opening weekend for the first one. (123.4M open, delisted at 290.78 = 2.356 multiplier. IT was frontloaded)
so, my gut would say IT2 will be less frontloaded, so it may spread some money out over the days but not as much excitment to give longer legs. so i think it may do about the same multiplier.
So (as a rough, not extremely calculated delist price) 92x2.4= $220
Again this a quick, simple way i do it. it's served me well. as the weeks go on, i just keep an eye on what it is doing. if it starts to tank off, i make adjustments to what i think it'll finish around. If it is very well received it may have more legs, giving smaller percentage drops weekend to weekend. this as well would make me adjust my multiplier up to see where the delist may be higher.
I know it sounds more complicated than it is. i just typed this out while on lunch, so this could've been distilled down finer but i hope you get my point. ill check back if you have anymore questions. happy trading!