S&P 500 Nears 7,400 as Breadth Divergence Hits Record Since 1928

The S&P 500 trades near 7,400 after an 8.1% year-to-date gain and 33% 12-month rally, yet the bottom 480 stocks have lost value year-to-date. Gains remain concentrated in mega-cap tech and semiconductors, which drove more than half the index advance while chip stocks reached an 18% weight. Warnings intensified from early-May alerts on 41% top-10 concentration and $143 billion VOO inflows to mid-month technical calls for a possible 10-15% pullback. The latest data confirm the widest index-versus-breadth divergence since 1928, leaving the benchmark higher even as equal-weight strategies begin to outperform.