FTSE 100 Live: Stocks plunge as oil spikes on Trump saying Iran ceasefire 'over'

FTSE 100 plunges about 1.6% (down ~101 points to ~10,565) as Brent crude jumps 4.8% to ~$77.70 (6.2% earlier) following renewed US-Iran escalation and Trump saying the ceasefire is “over”. Oil and shipping disruptions around the Strait of Hormuz push UK/EU gas prices higher (UK wholesale gas above 117p/therm vs ~102p a week ago; EU contract above €49/MWh) and lift inflation fears, driving Treasury yields higher and increasing perceived Fed hike risk (FedWatch: >85% odds of at least one 25bp hike before year-end). Company-specific pressure includes Vistry issuing a second profit warning, guiding to an expected ~£30m pre-tax loss for H1 (after a £50m hit), while Jet2 shares rise 12% on a new £250m buyback and top-end operating profit of £439.6m.

Analysis

The market is treating this as an exogenous tightening shock, not just an energy move: higher crude lifts input costs first, but the bigger second-order effect is a higher terminal-rate distribution and tighter financial conditions. That is why the downside is broad even though the direct earnings hit is concentrated in energy-intensive sectors; in this tape, upstream cash flows matter less than the implied compression in multiples for rate-sensitive defensives and levered domestic cyclicals.

SHEL is the cleanest direct beneficiary among the named names, but the upside is mostly convex to duration of the shock. If oil stays elevated for several weeks, consensus will start to re-rate upstream free cash flow and balance-sheet repair; if the move fades quickly, the equity beta should be much smaller than the commodity move. The more durable losers are businesses whose economics rely on low churn, stable funding markets, and benign discount rates: LBTYA/LBTYK face an added regulatory overhang, while long-duration defensives like AZN, GSK, RELX, and LSEGY can de-rate mechanically as yields back up.

Contrarian risk: the market may be overpricing a sustained supply disruption before there is proof of physical shortage. Hormuz headlines tend to create sharp equity repricings that reverse fast if traffic normalizes or diplomacy reopens the corridor, and that would unwind the rate-hike narrative even faster than the oil premium. The false signal to watch is Brent failing to hold the high-$70s; if it slips back below that zone, today’s risk-off rotation is likely to retrace within days rather than months.

Key Decisions for Investors

• Long SHEL versus a broad UK equity index basket for 1-3 weeks: energy remains the only clean earnings revision story if Brent holds above $78; cut if Brent closes back below $74 or if shipping headlines de-escalate.
• Short LBTYA/LBTYK on the Ofcom overhang into any relief bounce: the fine itself is manageable, but the bigger issue is tighter scrutiny on retention economics and lower confidence in capital returns; reassess if management quantifies de minimis remediation costs and no churn leakage appears.
• Sell short-dated calls against SHEL only after a further oil spike: the tape is trading headline convexity, so upside is likely capped unless there is confirmed supply disruption; prefer taking premium rather than chasing outright longs after a gap.
• Watch AZN/GSK/RELX/LSEGY for a multi-week de-rating trade if US/UK yields keep rising: these names can lag even in a 'defensive' bid because their valuations are duration-sensitive; the thesis is falsified if yields mean-revert and Brent loses momentum.
• No chase on broad risk shorts here unless Brent sustains above $80 and bond yields keep moving higher for several sessions; absent that, this looks like a headline-driven dislocation rather than a structural regime change.