Global markets sold off on Tuesday as a potent combination of geopolitical escalation and surging long-term bond yields weighed on risk sentiment. The expiry of the US-Iran ceasefire and Tehran's shift to a 'fully offensive' military posture raised fears over Strait of Hormuz supply disruptions, pushing Brent crude above $91/bbl and WTI near $85/bbl. Simultaneously, the US 30-year Treasury yield broke above 5% to multi-decade highs, driven by persistent fiscal concerns, heavy AI-related corporate bond issuance, and parallel yield surges in Japan and Germany. The VIX rose 4.3% to 15.84, signalling a meaningful, if not extreme, pickup in near-term hedging demand across risk assets.
For Asia-Pacific markets opening today, the implications are broadly negative. Rising oil prices act as a tax on energy-importing economies across the region, while the steepening US yield curve increases the cost of capital and pressures rate-sensitive sectors including REITs and growth equities. The Nikkei's 2.54% decline — with its own VIX rising 3.5% to 30.51 — reflects the acute vulnerability of Japanese equities to both yen dynamics (USD/JPY holding near 159.34) and domestic 10-year yields hitting three-decade highs near 3%. The ASX 200 closed nearly flat at 9,070 with its VIX a relatively contained 10.89, but today's Australian employment data at 21:30 ET and continued commodity price pressure on copper and aluminium will be the critical local focus.