---
symbol: "JP225"
name: "Nikkei 225"
date: 2026-09-08
change_pct: -1.020330926321207
direction: "down"
event_type: "macro_print"
url: "https://perplo.app/why/JP225/2026-09-08"
updated_at: 2026-09-08T13:06:31.377Z
---

# Why Nikkei 225 (JP225) fell 1.02% on September 8, 2026

Nikkei 225 (JP225) fell 1.02% on September 8, 2026 — Q2 GDP revision firms BOJ September hike odds.

## What happened

Japan's revised Q2 GDP beat forecasts, reinforcing Bank of Japan officials' case for a September rate hike and tightening monetary policy cycles.

## Why it moved

A stronger-than-expected GDP revision raises the probability that the BOJ will proceed with rate hikes sooner; higher Japanese rates attract capital to yen-denominated bonds and reduce equity valuations, pressuring the…

## Why it matters

Japan (Yen & Equities) is repricing on BOJ policy normalization — a GDP beat tightens the hawkish bias and brings forward the timeline for rates to rise, draining liquidity from Japanese equities and reinforcing the…

## What would break the thesis

If BOJ officials push back on September timing, cite data concerns, or the revised GDP disappointment revisions, the hiking timeline extends and equities regain support.

## Sources

- [Preview: Japan revised Q2 GDP set to test BOJ September rate hike bets](https://investinglive.com/stocks/preview-japan-revised-q2-gdp-set-to-test-boj-september-rate-hike-bets/) — ForexLive
- [Japan GDP revision cements BOJ hike bets, yen and Nikkei in focus](https://investinglive.com/stock-market-update/japan-gdp-revision-cements-boj-hike-bets-yen-and-nikkei-in-focus/) — ForexLive
- [Japan Q2 GDP beats forecast, supporting case for BOJ rate hike](https://www.investing.com/news/economic-indicators/japan-q2-gdp-beats-forecast-supporting-case-for-boj-rate-hike-4890750) — Investing.com

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