Market Briefing — 6 November 2026

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Technology-market selloff, oil tanker, central bank, care operations and AI cybersecurity

AI-generated briefing. Facts checked as of 6 November 2026.

Wall Street plunges as the chip index drops 12%

The Nasdaq fell 5.5% and the S&P 500 lost 4.4% on Thursday, while the Philadelphia Semiconductor Index plunged 12.2%. Weak chip earnings, forced risk reduction and doubts about returns on AI investment drove the selloff.

Why it matters: The decline has moved from a valuation concern to a broader liquidity and financing risk that can spill into European technology and Swedish industrial shares.

Source: Reuters

Oil rebounds after fresh tanker attacks

Brent rose to $99.58 a barrel after three new attacks on tankers in the Strait of Hormuz, although it remains down about 12% for the week. Markets are recognising that the US election result alone does not make the crucial shipping route safer.

Why it matters: The risk of disruption in Hormuz means energy, inflation and interest rates can swing sharply on individual security headlines.

Source: Reuters

Bank of England raises its policy rate to 4%

The Bank of England increased Bank Rate by 25 basis points in an 8–1 vote; one member preferred a 50-basis-point move. The bank now expects UK inflation to reach about 5% next summer as higher energy costs feed through.

Why it matters: The decision reinforces the global tightening cycle and can affect sterling, European bond yields and highly leveraged companies.

Source: Bank of England

Attendo delivers its strongest quarter to date

Attendo’s revenue rose 3.1% to SEK 4.91 billion and lease-adjusted EBITA increased to SEK 557 million from SEK 482 million. The margin improved to 11.3%, free cash flow rose to SEK 375 million and occupancy reached 88%.

Why it matters: Higher margins, strong cash flow and improved occupancy support the share and create room to invest in new care capacity.

Source: Attendo

OpenAI launches GPT-6 Cyber for advanced vulnerability research

GPT-6 Cyber improves its ExploitGym score from 32.1% to 48.5% versus its predecessor and has identified 81 previously unknown high-severity Firefox vulnerabilities. The model is classified as Critical for cybersecurity and access is restricted to verified organisations through Daybreak Red.

Why it matters: AI can now find and validate exploitable flaws at scale, strengthening defenders while raising the need for strict access controls and auditability.

Source: OpenAI