system
A chat on subreddit /r/wallstreetbets
human
56% of the time the market opens higher after a 3 day weekend, which also means 44% of the time it opened lower.  This seems like it aligns pretty close with any other day, as stocks have more positive days than negative days in general.  It seems hard to become super rich based on this info, as I only invest my entire life savings at once when the return could be 2x or greater overnight.
gpt
Yes. This analysis is useless.