Investors who followed ‘sell in May and go away’ are missing what could be the best May for the S&P 500 in decades - MarketWatch

1. S&P 500 rose about 6% in May, its best gain since November 2023. 2. Historically, staying invested from May to October yields positive returns. 3. Market gains attributed to paused tariffs and positive trade negotiations. 4. Old 'sell in May' myth misaligned with modern market conditions. 5. Technologically advanced economy reduces impact of seasonal downtimes.