---
title: "Tech just pulled a 'once in 4 million years' move"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/289218806.md"
description: "The S&P 500 Technology sector (XLK) recently outperformed the broader S&P 500 by 29.3 percentage points over 50 trading days, a move described as statistically bizarre and roughly 6 standard deviations above normal. Ryan Detrick of Carson Group likened this extreme relative strength to a 'once in 4 million years' event under normal distribution, highlighting the extraordinary concentration of market gains driven by AI-linked mega-cap tech stocks."
datetime: "2026-06-09T16:37:38.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/289218806.md)
  - [en](https://longbridge.com/en/news/289218806.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/289218806.md)
---

# Tech just pulled a 'once in 4 million years' move

Large-cap tech’s (XLK) (VGT) (IYW) latest run has gone from strong to statistically bizarre. The S&P 500 Technology sector (XLK) recently outperformed the broader S&P 500 (SPY) (VOO) by 29.3 percentage points over the prior 50 trading days, according to data from DataTrek Research. That put the move roughly 6 standard deviations above normal, with ...

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