: Patterns shift during bear markets, where Mondays and Tuesdays may experience the highest volatility and steepest drops.
: Often attributed to "weekend effect" news or investor gloom at the start of the work week. Tuesday (Transition) Average Return : 0.062%. best and worst day of the week to buy stock
: Highest probability of a positive return, making it ideal for taking profits before the weekend. Critical Academic & Practical Considerations : Patterns shift during bear markets, where Mondays
Based on 98 years of S&P 500 data (through 2026), daily performance trends typically follow these patterns: Average Return : -0.07%. Trend : Over 51% of Mondays since 1928 have finished lower. : Highest probability of a positive return, making
Historically, is considered the best day to buy stocks and the worst day to sell them due to the "Monday Effect," which typically sees prices dip at the start of the week. Conversely, Wednesday and Friday are often cited as the best days for performance, with Wednesday yielding the highest average returns and Friday seeing the highest probability of a positive close. Performance Summary by Day
While these historical patterns exist, modern research and platforms like Investopedia and Yahoo Finance suggest several caveats: