The Nasdaq Composite climbed to another record high on Tuesday 22nd September 2026, extending its remarkable run despite a backdrop of considerable economic and geopolitical uncertainty.
The technology-heavy index reached an intraday record of around 27,289 before closing at approximately 27,244, also a new record.
AI-related shares remained an important driver of the advance, with investors continuing to pour money into the technology sector.
However, the latest milestone comes amid concerns over stretched valuations, rising bond yields, expensive energy, tariffs and geopolitical tensions. The huge borrowing commitments being made to finance AI infrastructure are a massive issue too.
The contrast between record markets and broader uncertainty remains of concern.