History Says the S&P 500's 9-Week Rally Is Rare. It May Be Even Rarer Than You Think

The nine-week rally in the S&P 500 has not happened often, even if the market keeps climbing. The index ended the week with a 0.2% gain, extending its streak to nine consecutive weeks, and since March 30 it has risen 19.5%, adding roughly $11 trillion in value in two months. Historical data show there have been 10 nine-week wins since 1945, but the makeup of today’s rally is different: a small cohort of technology and AI-related stocks has driven most gains, while many economically sensitive sectors lag. The stock market’s breadth remains uneven as manufacturing activity slows and consumer spending slows.