---
title: "S&P 500 hits record highs despite historic breadth warning"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286621504.md"
description: "The S&P 500 has reached record highs, but with fewer than 60% of its stocks above key moving averages, raising concerns about the sustainability of the rally. Nearly 10% of S&P 500 stocks have hit 52-week lows while the index rises, marking a historic divergence. The gains are primarily driven by AI capital spending, but the lack of broader market participation leaves it vulnerable to inflation and Federal Reserve policy changes."
datetime: "2026-05-15T22:21:18.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286621504.md)
  - [en](https://longbridge.com/en/news/286621504.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286621504.md)
---

# S&P 500 hits record highs despite historic breadth warning

Record highs, weak breadth: The S&P 500 is rallying to new peaks despite fewer than 60% of its stocks trading above key moving averages, echoing late 1990s patterns. Historic divergence alert: Nearly 10% of S&P 500 stocks hit 52-week lows while the index hit highs — a first in market history, raising concerns about rally sustainability. AI-led concentration: AI capital spending is driving gains, but broader participation is lacking, leaving the market vulnerable to shocks from inflation or Fed policy.

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