Markets: Brent Jumps 6% to $89.40 on Iran Strikes; Sterling Weakens; VIX Spikes
Global markets opened Saturday under structural pressure following the Friday-evening US-Iran exchange of strikes near Hormuz. Brent crude jumped 6% to $89.40 a barrel overnight on the framework-durability stress. UK 10-year gilt yields rose to 4.96%, a fresh structural high. Sterling weakened further to $1.3145. VIX volatility index spiked 10% to 23.50. The Monday London open will reflect the binary on whether the Iran-US escalation continues or de-escalates through the weekend mediator-channel architecture. The Burnham-era Chancellor question continues to pressure UK fiscal positioning.
The Brent 6% overnight jump materially reverses the post-Iran-framework downward trajectory; the structural risk is whether the Friday-evening exchange of strikes triggers sustained framework collapse or remains a contained tactical-pressure exchange. The VIX spike to 23.50 confirms the structural cross-asset volatility-pricing acknowledgement. The Burnham “big building boom” positioning combined with the BBC Reeves-replacement reporting continues to pressure gilt-market positioning. The August Bank Rate cut probability remains above 50% per Bank of America commentary.