Why the Nikkei 225 Has Grown 80% in a Year

Core Reasons the Nikkei Has Exploded Higher

1.  Massive Foreign Capital Inflows

Foreign investors have been the single largest catalyst.

• Net foreign buying exceeded ¥9 trillion in H1 2025, a record pace.
• Global funds rotated out of expensive U.S.  and weak European markets into Japan, attracted by cheaper valuations, higher dividends, and improving governance.
• Hedge funds also piled in, pairing long Japanese equities with short‑yen trades, amplifying returns.

2.  Weak Yen Supercharging Corporate Earnings

A sharply depreciated yen has:

• Boosted export earnings for giants like Toyota and Sony.
• Made Japanese goods more competitive globally.
• Increased the yen‑value of overseas profits when repatriated.
  This has been one of the most powerful tailwinds behind the rally.

3.  Corporate Governance Reforms Driving Shareholder Value

Japan’s corporate landscape has undergone a transformation:

• Tokyo Stock Exchange pressure to improve capital efficiency.
• Record levels of share buybacks and dividend increases.
• More active shareholders and better oversight of underperforming management.
  These reforms have materially lifted valuations and attracted global institutional investors.

4.  BOJ Monetary Policy Normalisation

The Bank of Japan’s gradual exit from negative rates and shift toward normalisation:

• Supported reflation expectations.
• Improved corporate earnings outlook.
• Reduced borrowing costs for companies reinvesting in growth.
  This policy shift has been a major structural driver of the rally.

5.  Return of Inflation and Wage Growth

Japan has finally escaped its decades‑long deflationary trap:

• Rising wages and modest inflation have boosted domestic demand.
• Higher nominal GDP has supported earnings upgrades.
• Households have begun shifting cash savings into equities.
  This reflationary backdrop has strengthened investor confidence.

6.  Japan’s Strategic Role in Global Tech & AI Supply Chains

Japan is indispensable in:

• Semiconductor equipment
• Robotics
• Precision manufacturing
  Global AI‑driven demand has lifted earnings across these sectors, reinforcing the rally.

7.  Supportive Global Trade and Macro Sentiment

Improved global trade sentiment and easing tariff risks have created a more favourable environment for Japanese exporters.

Why the Rally Has Been So Extreme (80%+)

The surge is not due to one factor—it’s the synchronisation of:

• Foreign inflows at record levels
• A weak yen boosting profits
• Corporate reforms unlocking value
• BOJ policy shifts supporting reflation
• Strong tech/AI demand
• Attractive valuations relative to the U.S.

This combination is rare and has created a multi‑engine bull market.

What Next to Watch For ...

• BOJ rate decisions (any mis‑step can trigger volatility).
• Yen movements (a sharp strengthening could pressure exporters).
• Continuation of corporate reforms.
• Foreign investor flows—still the biggest swing factor.

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