Trading Calendar – March

The following chart shows the average month-to-date percentage change in the S&P 500 index by trading day during March from 1990 through 2025. Day 0 represents the February close. It shows that the index during March tends to be positive, with gains concentrating mid-month. We have not used data for trading day 23, because most Marchs do not have 23 trading days. Also, sample size is only 25-36 for specific trading days, so these results are only mildly suggestive rather than predictive. For 1990-2025, 23 Marchs have been winners and 13 losers.

Return to the Trading Calendar to find other monthly profiles.