I never done that. Arbitrarily Picked the Price of a stock to close out at say 12:45PM trade. If all your saying this is an estimation of where the board closed out it shares that is fine, but all my Indices have always been based on closing prices, Not prices at 12:30 PM on a 250 share Print. As I said I don't want to argue about this any further, but their is a big difference between when I close out my indices and when your closing it out. Just my opinion.