The FTSE 100 traded slightly lower on Wednesday, ending a six-session advance as weaker oil prices pressured energy stocks. BP fell more than 2% and Shell declined about 1.4% after crude prices extended their losses for a third day on hopes that shipping through the Strait of Hormuz could resume. Iran and Oman discussed an interim framework intended to facilitate renewed traffic through the waterway. Mining stocks offered support, with Antofagasta, Anglo American and Fresnillo each rising more than 1%. Entain and Persimmon were also highlighted after FTSE Russell indicated that both companies are set to leave the FTSE 100 in its latest reshuffle. Ofgem (UK energy regulator) said the energy price cap will increase 4% from October, citing higher wholesale gas prices linked to the Middle East conflict. Investors are also awaiting Nvidia's results for further indications of the strength of the AI investment cycle.