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Asia Markets Reel as Iran Strikes, BOK Hikes and Yen Hits 40-Year Low

Summarized from Forexlive

Asian equities tumbled Wednesday as US-Iran military exchanges rattled markets, South Korea's central bank raised rates, and the yen sank to historic lows.

Asian financial markets faced a torrent of destabilizing forces on July 16, as fresh US military strikes on Iran's port city of Bandar Abbas triggered retaliatory fire that hit Kuwait and Bahrain, sending shockwaves through regional equity and currency markets already under pressure from trade and monetary policy developments. Japan's Nikkei dropped roughly 3% while South Korea's Kospi plunged approximately 6%, with chip stocks across the region absorbing particularly sharp selling pressure.

South Korea's central bank delivered a unanimous 25-basis-point interest rate hike, lifting its benchmark to 2.75%, and flagged persistent inflation as the primary driver of the decision. Separately, South Korean financial regulators announced plans to introduce curbs on single-stock leveraged ETFs after circuit-breaker sidecars were triggered on both the Kospi and Kosdaq exchanges during the session's steep selloff.

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In Japan, the yen's slide to a 40-year low dominated corporate anxiety and official rhetoric alike. Japan's finance minister repeated warnings over excessive foreign exchange moves as the yen hovered near 162 per dollar, a level that many Japanese firms identified as a greater operational threat than the prospect of Bank of Japan rate hikes. A senior BOJ official separately cautioned that delaying monetary policy adjustments risks triggering an economic downturn down the road.

On the trade front, the United States announced a 25% tariff on select Brazilian goods, carving out exemptions for beef and coffee. Meanwhile, the People's Bank of China set its USD/CNY reference rate at 6.7909, slightly weaker than market estimates, while Australian consumer inflation expectations dropped sharply to 4.7% in July from 5.5% previously — a data point that could ease pressure on the Reserve Bank of Australia. UBS added a bullish counterpoint to the turbulence, forecasting the S&P 500 will reach 8,200 by June 2027 on the back of strong corporate earnings.

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Frequently Asked Questions

Q.Why did South Korea's Kospi fall so sharply on July 16?

South Korea's Kospi dropped around 6% amid a combination of factors including escalating US-Iran military tensions, a central bank rate hike to 2.75%, and a broad selloff in Asian chip stocks that triggered circuit-breaker sidecars on both the Kospi and Kosdaq.

Q.What did the Bank of Korea decide at its July 2025 meeting?

The Bank of Korea unanimously voted to raise its benchmark interest rate by 25 basis points to 2.75%, citing persistent inflation as the key reason for the move.

Q.How weak is the Japanese yen and why does it matter for Japanese companies?

The yen hovered around 162 per dollar on July 16, a level described as a 40-year low. Many Japanese firms identified the weak yen as a bigger concern than potential Bank of Japan rate hikes, as it raises import costs and squeezes margins.

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