Day-of-Week Trading Performance: Do You Trade Worse on Mondays?

Some traders consistently lose on Mondays. Others give back their weekly profit on Fridays. Splitting your results by weekday takes a minute and sometimes reveals a pattern that is easy to act on.

How to check it

Group your trades by the weekday they were opened, and for each day look at:

• Number of trades
• Total and average P&L
• Win rate
• Average R

As with any breakdown, make sure each day has enough trades to mean something. Forty trades per weekday is a reasonable minimum before drawing conclusions. See sample size.

Common patterns and their causes

Weak Mondays. Weekend news creates gaps and uncertain opens. Some traders also come back rusty or overeager after two days off.

Weak Fridays. Lower afternoon volume in some markets, positions being closed before the weekend, and traders pushing to hit a weekly goal. Trying to "make the week green" on Friday is a classic source of revenge trading.

Strong midweek. Many traders do their best work Tuesday to Thursday, once they have a feel for the week's market.

Event days. Days with major scheduled releases, such as central bank decisions or employment reports, often behave differently. Tag them in your journal so you can separate them.

Avoid overfitting

Weekday patterns are easy to over-read. Before changing your schedule:

• Check whether the pattern holds across different months, not just in total.
• Ask whether there is a plausible reason for it.
• Check whether one or two big trades are responsible.

If a weak day is caused by a handful of large losses, the problem is risk management, not the weekday.

What to do about a weak day

• Trade smaller on that day for a month.
• Trade only your best setup.
• Or skip it and use the time for review and preparation.

Then compare. The calendar view makes this easy: see the trading calendar heatmap.

In TradeThink

The reports include P&L, win rate and trade count by weekday, and the calendar shows each day's result so clusters stand out. Combine weekday with time of day for the full picture.