May Stock Market Performance in Midterm Election Years | Jeff Hirsch

The S&P 500 has posted gains during the first three trading days of May in 19 of the past 28 years.

 

Early May Strength Turns to Chop Until Late Month Pop.

Weakness often emerges around the May 6 (Wed),  May 8-12 (Fri-Tue), and after May 18 (Mon). The final four days usually post solid gains (May 26-29, Tue-Fri), though the last day of May has been notably weak.

 

In midterm election years, May typically starts higher but turns broadly weak by May 5 (Tue), with softness persisting through most of the month.

 

Reference:

Jeffrey A. Hirsch (May 1, 2026) - Early May Strength Turns to Chop Until Late Month Pop.

 

 S&P 500 Midterm Election Year Seasonal Pattern, 1949-2024. 

 

S&P 500 Average Performance and Hit Rate per Day (1928-2024). 

   

In the Four-Year Presidential Cycle, May of midterm election years has historically been the weakest,

with all major indices avg. declines: DJIA –0.08%, S&P 500 –0.63%, NASDAQ –0.76%, NYSE –1.19%.

  

Historical S&P 500 data shows May averages just 0.38% gain since 1950 overall, but improves to 2.58% average and

9-1 record in the 10 years with April gains of 5% or higher, including the last seven straight positives post-1985. 

 

When the S&P 500 closes April at a new all-time monthly high since the early 1960s (17 instances shown), 
the remainder of the calendar year has been positive 100% of the time with an average gain of +10.35%. 

 

 

See also: 

Jeffrey A. Hirsch (December 29, 2025) - 2026 Midterm Election Year Seasonal Patterns of US Indices.

Alex Krainer (April 27, 2026) - S&P 500 Dumb Money Confidence Enters Extreme Optimism. 

@Fiorente2 (April 20, 2026) - DJIA 2026 vs Top Three Midterm Correlated Years Since 1886.

Namzes (April 19, 2026) - S&P 500 Bear Outlook Intact: Q3 3.5-Year Hurst Cycle Low. 

Nicholas D. Savino (May 2, 2026) - S&P 500 Forecast for May 2026.