Global bond yields rose sharply and government bonds sold off this month as inflation fears linked to the Iran conflict intensified [1].
The market volatility signals deep investor anxiety over energy security. Because an impasse over the Strait of Hormuz and the broader Iran-Russia conflict has lifted oil prices, investors are demanding higher yields to compensate for expected inflation [1, 2, 3].
In the U.S., the 10-year Treasury yield topped 4.5% [3]. The 30-year U.S. Treasury yield reached its highest level since 2007 [2]. These movements reflect a broader retreat from sovereign debt across the U.S., the U.K., Europe, and Asia [2, 3].
The sell-off extended to Asian markets, where the Japan 30-year sovereign bond yield hit 4% for the first time [3]. This spike underscores the global nature of the inflationary pressure triggered by the Middle East tensions.
Equity markets also reacted to the instability. The S&P 500 fell 1.2% in its worst session since March [3]. Tech stocks were particularly hard hit, as chipmakers gauge sank 4% [3].
Political leaders, including President Donald Trump, remain central to the discourse as markets weigh the possibility of peace deals or further escalation in the region [1, 4]. The interplay between diplomatic efforts and the risk of disrupted oil shipments continues to drive the volatility in both the bond and stock markets [1, 4].
“The 30-year U.S. Treasury yield reached its highest level since 2007”
The simultaneous spike in bond yields across major economies suggests that markets view the Iran-Russia conflict not as a localized event, but as a systemic risk to global price stability. When oil prices rise due to geopolitical instability in the Strait of Hormuz, it creates a 'cost-push' inflation scenario that forces central banks to maintain higher interest rates, further depressing bond prices and weighing on equity valuations.
