---
symbol: "JPY"
name: "Japanese Yen"
date: 2026-09-04
change_pct: -1.840065536580747
direction: "down"
event_type: "other"
url: "https://perplo.app/why/JPY/2026-09-04"
updated_at: 2026-09-04T01:06:42.767Z
---

# Why Japanese Yen (JPY) fell 1.84% on September 4, 2026

Japanese Yen (JPY) fell 1.84% on September 4, 2026 — U.S. AI growth keeps dollar strength vs. yen.

## What happened

Deutsche Bank has positioned the dollar as a direct leverage play on the AI race—betting that U.S. AI-driven growth and the resulting higher yields will sustain dollar strength versus the yen.

## Why it moved

If AI capex and productivity gains keep U.S. growth and real yields elevated relative to Japan's, foreign capital flows into dollar assets and the carry trade unwind, pushing USD/JPY higher and the yen lower.

## Why it matters

Part of the Dollar Regime theme: the AI supercycle is cementing U.S. exceptionalism in growth and rates, a structural tailwind for dollar dominance and a headwind for lower-yielding currencies like the yen.

## What would break the thesis

If U.S. AI capex disappoints or the BOJ surprises with hawkish tightening, the growth and rate divergence narrows, collapsing the dollar-yen bid and sending yen higher.

## Sources

- [Deutsche Bank: The dollar is now leveraged to the AI race](https://investinglive.com/forex/deutsche-bank-the-dollar-is-now-leveraged-to-the-ai-race/) — ForexLive
- [Dollar gains as oil, rising bond yields stoke inflation fears - Reuters](https://news.google.com/rss/articles/CBMisgFBVV95cUxQUzR4b3dnajg5QUJSRUN0VHJXQkhXQWpUX2lLVU91dWgtZWJSNGNKcXRLSUpramxQeER0NHliVWZ2LU9xSjJYV25IRGpUMWlDODcxc2g4d0d1S3ZkSFhMLUxEdWlEV1NwNDZmaUhENDZVT1RpUFlQci1UUGlvWlVlX0xObzRJdlFFT09GMWtXQmNGN0xKM0xWUTd1TDBwQzdQaHRyTTJvRnM5TmpMQ0tSZVR3?oc=5) — Reuters

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