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Morning Bid: Yen sinks as BOJ holds - and it's the KOSPI's best day - Finance news and analysis from Global Banking & Finance Review
Finance

Morning Bid: Yen sinks as BOJ holds - and it's the KOSPI's best day

Published by Global Banking & Finance Review

Posted on July 31, 2026

3 min read

· Last updated: July 31, 2026

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KOSPI Surges 17% as BOJ Holds Rates and Yen Sinks in Asia Market Rally

Asia Market Rally and Currency Movements

A look at the day ahead in European and global markets from Gregor Stuart Hunter

Asia's Blistering Rally

What a wild ride. Markets in Asia staged a blistering rally on Friday after the scorching selloff in tech stocks earlier this week, while the yen resumed its descent as the Bank of Japan left interest rates on hold.

KOSPI and Regional Index Performance

South Korea's KOSPI blasted as much as 17% higher, alongside gains of more than 7% in Taiwan and a jump of more than 5% in Japan's Nikkei 225 as traders pounced on battered chipmaker shares. MSCI's broadest index of Asia-Pacific shares outside Japan was up 4.7%.

Monthly Performance Context

Despite Friday's record gains, the KOSPI was still on track to lose almost 25% in July, marking its largest monthly loss since the Asian financial crisis in 1997.

Currency Market Developments

Currency markets, meanwhile, were processing the implications of unprecedented coordinated intervention by Japanese and Korean foreign exchange authorities on Thursday to strengthen their respective currencies against the U.S. dollar. For Tokyo, it was the latest in a string of market forays by authorities this year to halt the yen's decline, but it was a rare move by Seoul.

Impact of BOJ Decision on Yen and Won

The intervention boost didn't last long for the yen, which fell on Friday to 160.69 after the Bank of Japan's rate-setting committee kept rates on hold, in line with market expectations. The won also reversed some gains after reaching its strongest level in nine months overnight.

Global Equity Market Reactions

Stocks took their cues from Wall Street's gains on Thursday, with S&P 500 e-mini futures up 0.3% in Asian trade after strong earnings from Amazon and Sony during the Tokyo trading session, though Apple forecast revenue growth below analysts' estimates as it struggled with chipmaking bottlenecks.

Chipmaker Surge

Korean chipmaking heavyweights Samsung Electronics and SK Hynix, followed suit, soaring nearly 30% on Friday.

European Market Open

In early European trades, pan-region futures were up 0.6%, German DAX futures gained 0.4%, and FTSE futures were 0.4% higher.

Key Developments to Watch

Key developments that could influence markets on Friday:

Company Earnings

• Company earnings: ExxonMobil, AbbVie, Chevron, ITV, NatWest, Puma, Taylor Wimpey

Economic Events

• Economic events:

• UK: Nationwide house prices for July

• France: Preliminary CPI for July, producer prices for June

• Germany: Unemployment for July

• Euro Zone: CPI, HICP Flash for July

Debt Auctions

• Debt auctions: UK: 1-month, 3-month and 6-month government debt

(Reporting by Gregor Stuart Hunter; Editing by Sonali Paul)

Key Takeaways

  • KOSPI rallied ~16%—its biggest one‑day gain—after a brutal month even worse than 1997’s crisis; yet remains down ~29% in July (apnews.com)
  • The BOJ held rates steady, but the yen weakened to near ¥160.7 per dollar despite intervention efforts (apnews.com)
  • Chip giants Samsung and SK Hynix surged ~30%, fueling Asia’s rally and boosting regional equities futures ahead of European opens (apnews.com)

References

Frequently Asked Questions

Why did the KOSPI surge by 17%?
The KOSPI soared as much as 17% due to traders buying battered chipmaker shares following a previous tech stock selloff and positive cues from Wall Street.
What caused the yen to decline further?
The yen continued its decline after the Bank of Japan left interest rates on hold, despite recent coordinated currency intervention efforts.
How did currency intervention affect markets?
Japanese and Korean authorities intervened to strengthen their currencies against the U.S. dollar, giving a temporary boost before the yen and won reversed gains.
Which companies influenced market sentiment in Asia?
Strong earnings from companies like Amazon, Sony, Samsung Electronics, and SK Hynix influenced positive market sentiment in Asia.
What major economic events are being monitored by markets?
Markets are watching corporate earnings from global firms and economic data releases from the UK, France, Germany, and the Euro Zone.

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