Global Market Today: Asian markets tumble as US-Iran fighting lifts oil and bond yields - The Economic Times

Asian equities opened the week under pressure as escalating military action between the United States and Iran drove investors toward risk-off positioning. The immediate trigger was a shift in geopolitical risk perception, which historically prompts capital outflows from regional stock markets. Declines were broad-based, though the magnitude varied by market, reflecting differing exposure to energy costs and trade flows.

The same tensions lifted crude oil prices on fears of supply disruption in the Strait of Hormuz, a critical transit chokepoint. Less intuitive was the move higher in bond yields. Typically, geopolitical shocks drive demand for safe-haven government debt, which pushes yields down. Here, however, the oil price spike stoked inflation expectations, leading investors to demand a higher term premium for holding longer-dated bonds. That dynamic can complicate central bank policy, as it pressures both growth and price stability.

For market participants, the key variables to monitor are diplomatic signals and actual supply disruptions. Any de-escalation could quickly reverse energy-driven moves, while sustained conflict risks keeping volatility elevated across asset classes. The episode is a reminder that geopolitical events often transmit to portfolios through secondary channels—like inflation expectations—rather than through headline risk alone.