To be clear, I would much rather have an official notification that I know I can take a position on than to have one (before the close) that might might have to reverse.  Today I bought based on your first email and now I will have to sell that position.    So I vote for simplicity:  Send out the notifications ONLY after the close.  That way all of us will know that it's official. (The system cannot change its mind after the close!)

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