Banker’s hours are so 19th Century! We are talking about stock exchanges being open ALL DAY Monday through Friday! That is my prediction.
This has several advantages to the general public.
First, I predict that you will be able to buy or sell stock at any time (except weekends) just like buying a book at Amazon.com.
After-hour trading has gradually increased over the years as stock markets make more stocks available for trade. Also stock exchanges have experienced mergers and acquisitions involving exchanges in other countries. So the exchanges are becoming international which requires support for many different time zones.
Secondly, no longer will institutions sneak in sales “at the close” or use “imbalance only orders” to modify the closing price.
Institutions have been using these “at the bell” prices when convenient or they cancel them if they won’t be profitable. This distorts the market price.
So 24 by 7 stock exchanges are good for the general public but bad for corporations. So it may be a while before we see them. Probably after some huge foreign corporation implements them.