How the oil shock is reviving global rate-hike risk

Disrupted supply routes helped push Brent crude up 6% to US$107 a barrel, while the S&P 500 fell 0.58% and US Treasury yields reached multi-year highs.[1] In Europe, the ECB raised its policy rate by 25 basis points to 2.5%, warning that the war-driven energy shock could spread through the fuel-import-dependent eurozone economy.[2] A US Treasury plan to buy back up to US$6 billion of long-dated bonds also disappointed investors who had expected a larger intervention, adding pressure to yields.[5] Why it matters: Higher energy prices can sustain inflation just as rising government-bond yields make mortgages, business loans and other borrowing more expensive; they also reduce the relative appeal of equities and can restrain economic growth.[1][5] Key insights: Traders assigned a 70% probability to a Federal Reserve increase of at least 25 basis points at its next meeting, up from about 64% before the latest producer-price report.[1] | The US 10-year Treasury yield moved above 4.85%, its highest level in nearly three years, while the 30-year yield stood at 5.29%.[5] | Germany’s 10-year yield reached its highest level since 2011, and traders priced about 60 basis points of additional ECB increases by April 2027.[2] | The S&P 500 has fallen nearly 3% from its August 13 record close but remains up 11% in 2026; it trades at 19 times expected earnings.[1] Cheatsheet facts: What changed: Brent reached US$107, the ECB lifted rates to 2.5%, and the S&P 500 lost 0.58% as sovereign yields climbed.[1][2] | Why now: Energy-supply disruption renewed inflation fears, while a US$6 billion Treasury buyback fell short of market expectations.[1][5] | Watch next: The August US consumer-price release on September 11 and the Federal Reserve decision on September 16 will provide the next observable tests of rate-hike expectations.[1][2][5]