---
title: "What happened overnight – Friday 5th June 2026"
publisher: "Share Talk"
author: "sharetalk"
published: "2026-06-05T08:09:49+00:00"
modified: "2026-06-05T08:09:49+00:00"
date: 2026-06-05
canonical: "https://www.share-talk.com/what-happened-overnight-friday-5th-june-2026/"
category: "Blogs"
categories: ["Blogs", "Technology", "Technology, Media & Telecoms"]
tags: ["Asia", "Bangkok", "china", "Denmark", "Endeavour Mining", "Fed", "Federal Reserve", "Finland", "FRANCE", "FTSE 100", "GERMANY", "Glencore", "Greenland plan", "Hong kong", "Jakarta", "Japan", "Manila", "mining stocks", "Mumbai", "Nasdaq Composite", "NATO alliance", "Netherlands", "Nikkei 225", "Norway", "S&P 500", "Seoul", "shanghai", "Singapore", "Sydney", "Taipei", "Taiwan", "Tokyo", "UK", "United States", "Wall Street"]
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format: "news"
language: "en-GB"
---

# What happened overnight – Friday 5th June 2026

**Published:** June 5, 2026
**Author:** sharetalk
**Categories:** Blogs, Technology, Technology, Media & Telecoms
**Tags:** Asia, Bangkok, china, Denmark, Endeavour Mining, Fed, Federal Reserve, Finland, FRANCE, FTSE 100, GERMANY, Glencore, Greenland plan, Hong kong, Jakarta, Japan, Manila, mining stocks, Mumbai, Nasdaq Composite, NATO alliance, Netherlands, Nikkei 225, Norway, S&P 500, Seoul, shanghai, Singapore, Sydney, Taipei, Taiwan, Tokyo, UK, United States, Wall Street
**Featured image:** ![](https://i0.wp.com/www.share-talk.com/wp-content/uploads/2026/04/overnight-1-1.webp?fit=750%2C406&quality=80&ssl=1)

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Asian markets retreated sharply on Friday as investors reacted to a sell-off in artificial intelligence-related stocks on Wall Street, raising concerns that valuations across the sector may have run ahead of fundamentals.

South Korea’s Kospi led regional declines, falling 4.8%, with technology shares bearing the brunt of the selling pressure. The index had been down as much as 7% earlier in the session following a period of exceptional gains that had seen it almost double over the previous year.

The weakness was triggered by a sharp 12.6% decline in shares of US semiconductor giant Broadcom after its latest guidance failed to meet elevated investor expectations. The disappointing outlook prompted a broad reassessment of AI-related stocks globally.

Other major US technology names also came under pressure overnight, with memory chip manufacturer Micron Technology falling 7.7% and cybersecurity specialist CrowdStrike losing 3.8%.

The impact was felt across Asia’s semiconductor sector. South Korean memory chip producer SK Hynix tumbled 8.4%, while Samsung Electronics declined 5.4%, erasing a significant portion of their recent AI-driven gains.

Japan’s Nikkei 225 fell 1.4% to 66,546.84 despite economic data showing real wages increased for a fourth consecutive month. Technology stocks dominated the declines, with chip equipment manufacturer Tokyo Electron dropping 7.2%.

Elsewhere, Hong Kong’s Hang Seng Index slipped 0.8%, while mainland China’s Shanghai Composite bucked the regional trend, gaining 0.4%. Australia’s S&P/ASX 200 fell 0.5%, and Taiwan’s technology-heavy Taiex declined 1.5%.

The pullback highlights growing sensitivity within the market to earnings expectations and valuations after a prolonged rally driven by enthusiasm surrounding artificial intelligence infrastructure and semiconductor demand.

Despite the weakness in Asia, Wall Street delivered a mixed performance overnight. The Dow Jones Industrial Average surged 1.7% to a record high of 51,561.93, supported by easing concerns over energy prices and the banking sector. The S&P 500 gained 0.4%, marking its tenth advance in eleven trading sessions, while the Nasdaq Composite slipped 0.1% as technology stocks underperformed.

Meanwhile, oil prices stabilised following recent declines. Brent crude rose 0.4% to around US$95 per barrel, helping calm some inflation concerns that have weighed on global markets in recent weeks.

The latest moves suggest investors remain positive on the long-term outlook for artificial intelligence, but are becoming increasingly selective as they scrutinise valuations and earnings growth across the sector.

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