Tokyo Stocks: Nikkei 225 and TOPIX Daily — 2026-09-19
The Bank of Japan raised its benchmark interest rate to a 31-year high of 1.25% on September 18, defying expectations of a hawkish squeeze by sending the Nikkei 225 surging 1.52%. The "sell the news" reaction was inverted as the yen weakened past 157 against the dollar, boosting exporters and semiconductor stocks like Tokyo Electron and Advantest.
Tokyo Stocks: Nikkei 225 and TOPIX Daily — 2026-09-19
Top developments
BOJ Raises Rates to 1.25%, Stocks Rally in Counter-Intuitive Move
On September 18, the Bank of Japan raised its benchmark interest rate to 1.25% from 1.0%, marking the highest level in 31 years. Despite the hike, the Nikkei 225 gained 1.52% at the close, driven by a weaker yen and easing inflation concerns linked to falling oil prices. This positive market reaction suggests investors viewed the hike as a sign of economic resilience rather than a tightening shock, with the yen weakening past 157 against the dollar to support exporter valuations.
Semiconductor Sector Leads Gains on NVIDIA Forecasts
Tech-heavy components of the index drove the rally, with Tokyo Electron rising 4.20% to JPY 53,110 on September 18 amid strong net buying inflows. Advantest shares also rebounded significantly after NVIDIA’s CEO Jensen Huang predicted a doubling of chip sales next year, triggering a wave of buying in AI-linked Japanese stocks. The sector's strength helped lift the broader index, offsetting traditional drag from higher borrowing costs for domestic firms.
JGB Yields Ease as Market Absorbs Policy Shift
Contrary to typical tightening cycles, the yield on the 10-year Japanese Government Bond (JGB) slipped slightly to 2.99% on September 18, down 0.01 percentage points from the previous session. Bloomberg reports indicated that Governor Ueda’s mixed signals during the press conference contributed to the yen's weakness, as traders interpreted the guidance as less aggressive than feared regarding future hikes. This stability in bond yields alongside equity gains highlights a "Goldilocks" scenario where growth optimism outweighs rate-hike fears.
Local view
Nikkei and Fisco Report Strong Rebound Japanese financial media highlighted the Nikkei’s recovery to the 65,000 yen range following the BOJ decision. Nikkei reported that value stocks and laggard names provided support, while Fisco noted that the pass-through of the BOJ rate hike was viewed positively, with falling crude oil prices helping to alleviate inflation concerns across Asia. Local coverage emphasized that the "sell the news" dynamic failed to materialize, instead resulting in a three-day consecutive rise for the index.
Context & numbers
- Nikkei 225 Close (Sep 18): Up 882.70 yen to 65,018.95
- Nikkei 225 Close (Sep 17): Edged up 0.33% to 64,136.25 ahead of the decision
- BOJ Policy Rate: Raised to 1.25% (from 1.0%)
- 10-Year JGB Yield: 2.99%
- Yen/Dollar: Weakened past 157
- Tokyo Electron: +4.20% to JPY 53,110
On the radar
- Foreign Investor Flows: With the Nikkei breaking above 65,000, attention turns to weekly foreign investor data. Recent trends show record foreign ownership driven by the AI boom, and continued inflows could sustain the current momentum.
- Corporate Governance Reform: Investors are monitoring follow-up actions on cost-of-capital consciousness, particularly among Prime Market companies that have lagged in buyback announcements despite the rising index levels.
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