At this time in my life, I don’t work with any trades on Mondays. On mondays-being the first day of the week, the market changes very quickly within the first four hours in the morning. I’d much rather take my time to study the charts and make my move when market levels off (if that even happens).
With the markets I work in, I prefer to sell on Fridays since it is the last trading day of the week and many investors are buying. Have you ever heard of the quote, “Observe the masses and do the opposite”, well that quote certainly works in this field. Overall, do what you see fit for you and your finances. Don’t sell or buy on particular days because Mrs.Market tells you to. Sell or buy because you made that decision for yourself.