The S&P 500 is climbing for a 9th straight day — but the ‘breadth paradox’ is sending a rare warning

Title: The S&P 500 is climbing for a 9th straight day — but the ‘breadth paradox’ is sending a rare warning Published: 2026-06-02T19:11:00.0000000+00:00 Link: https://www.marketwatch.com/story/s-p-500-climbing-for-9th-straight-day-but-breadth-sends-a-rare-warning-1577195d?mod=mw_rss_topstories Frances Yue Getty Images Summary: The S&P 500’s latest string of records has come with a catch: Fewer stocks are participating in the rally.