---
title: "人工智能芯片的上涨推动了市场极端集中风险的加剧"
type: "News"
locale: "zh-CN"
url: "https://longbridge.com/zh-CN/news/286670517.md"
description: "五家科技巨头目前占据了近期标准普尔 500 指数涨幅的约一半，半导体在该指数中占据创纪录的 15%。尽管应用材料实现了创纪录的增长，但像奇景光电和帕沃英蒂格盛这样的公司却面临销售下滑，突显出人工智能需求利益的不均衡。分析师警告泡沫风险，指出与 1990 年代互联网泡沫时期的相似之处，认为高估值和市场领导地位的集中可能加剧经济下行"
datetime: "2026-05-17T11:01:18.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286670517.md)
  - [en](https://longbridge.com/en/news/286670517.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286670517.md)
---

# 人工智能芯片的上涨推动了市场极端集中风险的加剧

Concentration at extremes: Five tech giants now account for about half of recent S&P 500 gains, with semiconductors at a record 15% of the index’s weight. Winners and laggards: Applied Materials posts record growth, but others like Himax and Power Integrations see sales declines, exposing uneven benefits from AI demand. Bubble risk signals: Analysts draw parallels to the 1990s dot-com era, warning high valuations and narrow market leadership could magnify a downturn.

### 相关股票

- [AMAT.US](https://longbridge.com/zh-CN/quote/AMAT.US.md)
- [POWI.US](https://longbridge.com/zh-CN/quote/POWI.US.md)
- [HIMX.US](https://longbridge.com/zh-CN/quote/HIMX.US.md)
- [FTXL.US](https://longbridge.com/zh-CN/quote/FTXL.US.md)
- [SOXX.US](https://longbridge.com/zh-CN/quote/SOXX.US.md)
- [SMH.US](https://longbridge.com/zh-CN/quote/SMH.US.md)
- [XSD.US](https://longbridge.com/zh-CN/quote/XSD.US.md)
- [PSI.US](https://longbridge.com/zh-CN/quote/PSI.US.md)
- [SOXL.US](https://longbridge.com/zh-CN/quote/SOXL.US.md)
- [.SPX.US](https://longbridge.com/zh-CN/quote/.SPX.US.md)
- [SPY.US](https://longbridge.com/zh-CN/quote/SPY.US.md)
- [IVV.US](https://longbridge.com/zh-CN/quote/IVV.US.md)
- [VOO.US](https://longbridge.com/zh-CN/quote/VOO.US.md)

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