FTSE 100 Ends 0.08% Lower as Oil Surge Fuels Rate Concerns

Key Facts

The FTSE 100 closed September 7, 2026, down 0.08%, or 8.96 points, at 10,822.13 as rising oil prices and growing expectations of higher interest rates pressured UK equities despite gains in energy stocks.

The index had a contained but volatile session. It opened at 10,830.97, traded between 10,794.17 and 10,868.27, and finished at 10,822.13. Those figures show that the closing loss was marginal after the benchmark recovered part of its early decline.

Oil pressure was tied to the escalating U.S.-Iran confrontation and disruption to flows through the Strait of Hormuz. Market reports said crude traded near a 6-week high, while its inflationary impact strengthened expectations of interest-rate increases globally.

Energy shares limited the index’s decline, with BP and Shell each gaining about 1%. By contrast, personal-care, drug and grocery retailers fell 0.9%, while beverages declined 1.3%, showing that weakness extended beyond the oil sector.

The FTSE 100 comprises the largest 100 UK companies by full market capitalization and is market-cap weighted. Shell alone had a 7.11% weight as of May 29, 2026, helping explain why gains in major oil companies can cushion weakness across the broader index.

Attention after the session shifted to U.S. inflation data due September 11, 2026, the Federal Reserve meeting ending September 16, 2026, and UK growth data expected during the week. Those releases will help determine whether the oil shock develops into broader interest-rate pressure on equities.