FTSE 100 climbs as sinking crude boosts broader market but drags on energy majors

London’s blue-chip shares advanced on Tuesday, with the benchmark FTSE 100 climbing 0.8% as a sustained collapse in global crude oil prices provided a broad deflationary lift to the index, though steep losses in heavyweight energy producers kept a firm lid on the day’s rally.

The UK benchmark pushed higher as traders welcomed the rapid cheapening of industrial and consumer fuel inputs ahead of a critical U.S. inflation report. However, the FTSE 100’s heavy concentration in commodity stocks meant the index could not fully capitalize on the underlying bullishness sweeping across European bourses.

The corporate declines tracked a relentless liquidation in global energy bourses. Benchmark Brent crude futures fell another 1% to $91.56 a barrel during the session, plumbing their lowest levels since early September and settling comfortably below the psychological $100 threshold.

The energy sell-off has accelerated as investors increasingly price in the possibility of diplomatic talks between the United States and Iran.

By dialing back the immediate threat of a wider conflict and supply disruptions in the Persian Gulf, the shifting geopolitical narrative has severely dented the risk premium attached to UK energy producers, temporarily rotating capital away from London’s traditional dividend heavyweights and into broader consumer and industrial franchises.

While tumbling oil prices offered underlying relief, broader risk appetite across the City was held in check by the looming release of the U.S. Consumer Price Index (CPI) later in the session.

Economists anticipate the October U.S. CPI report will show prices increasing at a moderate pace, yet remaining stubbornly elevated enough to justify further restrictive action from the Federal Reserve.

Following a blowout U.S. jobs report last Friday, fixed-income markets have aggressively repriced the central bank’s year-end trajectory, which heavily dictates global equity valuations.

Traders are now pricing in an 84% probability of a Fed interest-rate hike at the December meeting, a sharp increase from 74% just a week earlier, according to the CME FedWatch tool. A hotter-than-expected inflation print would likely cement those hawkish expectations, threatening to tighten global financial conditions and spark cross-border volatility.