Market Breadth
The Concentration Cliff: Market Breadth Narratives Shift as Records Mask Underlying Rot
As of March 12, 2026, the U.S. stock market presents a jarring paradox that has left seasoned analysts sounding the alarm. While the flagship S&P 500 (NYSE: SPY) recently flirted with the historic 7,000 milestone and the Dow Jones Industrial Average (NYSE: DIA) remains within striking