September 2026 Market Update: UK, US, Europe & Asia
By Georgia Holmes
Read our September 2026 market update covering UK, US, European and Asian markets, inflation, interest rates and what it means for investors.
September has been another eventful month for financial markets, with investors balancing inflation concerns, higher energy prices, interest rate decisions and ongoing geopolitical uncertainty.
While markets have remained relatively resilient in some areas, rising borrowing costs and renewed inflation concerns have created a more challenging backdrop for shares and bonds.
So, what happened across the major markets during September, and what could it mean for investors?
UK Markets: Inflation and Interest Rates Keep Investors Cautious
The UK market has faced renewed pressure from higher energy prices and concerns about inflation.
The Bank of England kept Bank Rate at 3.75% at its September meeting, although three members of the Monetary Policy Committee voted for a 0.25 percentage point increase. The Bank said UK CPI inflation had risen to 3.1% in August and warned that inflation could rise further as higher energy prices feed through into the economy.
This has created a difficult environment for investors. Higher interest rates can increase borrowing costs for households and businesses, while also affecting the valuation investors place on shares and other assets.
The UK economy itself has shown some resilience. However, the outlook remains closely linked to what happens to inflation and energy prices over the coming months.
For UK investors, this highlights why it can be important to look beyond short-term movements in the FTSE 100 or FTSE 250. Different investments can respond differently to changes in interest rates, inflation, currencies and economic growth.
US Markets: Strong Equities Meet Persistent Inflation
The US market has continued to attract significant investor attention, particularly around technology and artificial intelligence companies.
However, September has also brought renewed concerns about inflation and interest rates. The Federal Reserve increased its target range for the federal funds rate by 0.25 percentage points in September, taking it to 3.75%–4%. The Federal Reserve said economic activity was expanding at a solid pace, while inflation remained elevated.
Higher interest rates can be particularly relevant for growth-focused companies because future earnings are discounted at a higher rate. This can contribute to greater volatility in parts of the technology market.
At the same time, US equities have remained relatively strong despite the challenging backdrop. This demonstrates why market performance can be influenced by several factors at once, including company earnings, economic growth, interest rates and investor expectations.
For investors with significant exposure to US shares, currency movements are another consideration. Changes in the value of the pound against the US dollar can affect the sterling value of overseas investments.
European Markets: Higher Energy Costs Put Pressure on Shares
European markets have also experienced increased volatility during September.
The European Central Bank raised its three key interest rates by 0.25 percentage points in September, with the deposit facility rate increasing to 2.50%. The ECB said the conflict in the Middle East was generating additional inflationary pressure and projected euro area inflation to average 3% in 2026.
European shares were heading towards their first monthly decline in six months at the end of September, with the STOXX…