“Never check stock prices on Friday—it could spoil the weekend”

“Never check stock prices on Friday—it could spoil the weekend” is a simple piece of advice. Stock markets are usually closed on Saturday and Sunday. Some people prefer to check stocks on Sunday evening, after the weekend is over.
 
   
knol
Wall Street Adages
Quotes from the Street
(...)
Never check stock prices on a Friday, it could spoil your weekend.
   
Google Books
Buy the Rumor, Sell the Fact:
85 maxims of investing and what they really mean
By Michael Maiello
New York, NY: McGraw-Hill
2004
Pg. 51:
Never Check Stock Prices on Friday;
It Could Spoil the Weekend
 
Gold & Silver Forum
FACTFINDER
10-05-2007
But FACT#66 says never check stock prices on Friday, It could spoil the weekend.