I understand there might be some negligible tracking error during the trading hours, but can one assume similarly approximate tracking (say, within 0.05%) during pre-market or after-hours trading?
I am guessing NO, because the volume is not much. But let us say a HUGE shock happens pre-market or after-hours and the indexes tank, and so do the ETFs. What is supposed to happen to the underlying stocks?
Submitted January 25, 2017 at 05:07PM by colonize_this http://ift.tt/2kuwzcj
