---
title: "US Stocks at Open: NASDAQ Composite Index Down 1.1%, Philadelphia Semiconductor Index Down Over 4%, Micron Tech Down About 6%"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/290973155.md"
description: "Dow Jones Industrial Average down 0.4%, S&P 500 down 0.7%. Semiconductor stocks broadly lower, AMD down about 3%. Chinese concept stocks broadly lower, Alibaba down about 3%. Optical communication sector broadly lower, Marvell Tech down about 5%"
datetime: "2026-06-26T13:33:10.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/290973155.md)
  - [en](https://longbridge.com/en/news/290973155.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/290973155.md)
---

# US Stocks at Open: NASDAQ Composite Index Down 1.1%, Philadelphia Semiconductor Index Down Over 4%, Micron Tech Down About 6%

Dow Jones Industrial Average down 0.4%, S&P 500 down 0.7%. Semiconductor stocks broadly lower, AMD down about 3%. Chinese concept stocks broadly lower, Alibaba down about 3%. Optical communication sector broadly lower, Marvell Tech down about 5%.

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## Related News & Research

- [Asia open: Micron earnings beat sparks global semiconductor rally, USD remains firm](https://longbridge.com/en/news/290773458.md)
- [Marvell stock just hit a new high. A quiet Amazon decision could be why.](https://longbridge.com/en/news/290267606.md)
- [Micron MU could be the biggest AI earnings winner yet](https://longbridge.com/en/news/290445372.md)
- [Why everyone is talking about Micron](https://longbridge.com/en/news/290862553.md)
- [Comparing Marvell Technology With Industry Competitors In Semiconductors & Semiconductor Equipment Industry](https://longbridge.com/en/news/290948927.md)