Japan’s Nikkei tumbles as Iran stalemate stokes inflation worries
A stalemate in the Middle East conflict drove up oil prices and renewed worries over bond market risks and inflation
Published Tue, Aug 18, 2026 · 11:12 AM — Updated Tue, Aug 18, 2026 · 03:46 PM
[TOKYO] Japan’s Nikkei share average snapped a five-day winning streak on Tuesday (Aug 18), as a stalemate in the Middle East conflict drove up oil prices and renewed worries over bond market risks and inflation.
The Nikkei slid 2.5 per cent to end at 67,460.73, after a 5.5 per cent gain over the previous five trading sessions.
The broader Topix lost 1.1 per cent to 4,140.22. A temporary ceasefire between the US and Iran expired this week, with Washington ruling out extending the deal and Teheran saying it would shift to a “fully offensive” military posture.
Crude oil climbed as traffic through the crucial Strait of Hormuz shipping corridor again ground to a halt, and concerns about global inflation saw bond yields jump to multi-decade highs, including in Japan.
“Rising interest rates tend to highlight the relative overvaluation of share prices,” said Wataru Akiyama, an equities strategist at Nomura Securities.
“Underlying concerns regarding persistently high inflation – which are present in both Japan and the US – could well act as a drag on the stock market going forward.”
Growth stocks were a particular focus of selling, and the worst performer among the Tokyo Stock Exchange’s 33 industry groupings was electrical appliance makers, which dropped 3.7 per cent.
The sub-index includes chip-making tool manufacturer Tokyo Electron and chip-testing equipment maker Advantest, which dived 6.2 per cent and 5.1 per cent, respectively.
At the same time, shipping stocks benefited from expectations for higher freight rates, and marine transport was the best-performing sub-index, rallying 3.6 per cent. REUTERS
