S&P 500
The Fragile Fifty Percent: J.P. Morgan Warns of Systemic 'Tipping Point' as S&P 500 Concentration Hits Record Highs
As the opening bell rang on January 26, 2026, the equity markets found themselves at a historic crossroads. J.P. Morgan Global Research has issued a stark warning regarding the unprecedented concentration of the S&P 500, revealing that the top 20 stocks now command a staggering 50.8%