Oil-Led Nervous Market at the Start of the Week | USD/JPY Battles Around 159

Oil-Led Nervous Market at the Start of the Week | USD/JPY Battles Around 159

20 4月 2026, 10:38
Masayuki Sakamoto
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Oil-Led Nervous Market at the Start of the Week | USD/JPY Battles Around 159

■ Market Overview

The market opened the week with oil as the primary driver.

  • Iran showing a negative stance toward negotiations
  • Renewed concerns over a potential closure of the Strait of Hormuz
  • Approaching temporary ceasefire deadline

→ Geopolitical risks are once again back in focus

NY crude oil moved sharply:

$85 → $91, before pulling back toward the $89 area

→ Higher oil prices supported both USD strength and JPY weakness


■ FX Market Dynamics

  • USD/JPY: Rose from the mid-158s into the 159 area
  • EUR/JPY: Broke to fresh highs
  • GBP/JPY: Also reached new highs

→ Continued JPY selling led mainly by cross-yen pairs

During the London session:

  • Iran rejected negotiations
  • Earthquake reports in the Tohoku region of Japan

→ JPY selling accelerated further


■ Core Market Theme

“Oil = JPY market” remains the dominant structure

  • Rising oil → JPY weakness
  • Geopolitical escalation → USD buying

→ Double pressure: JPY selling + USD buying


■ Key Focus (Top Priority)

  • Oil prices (can crude hold above $90?)
  • Progress or failure in Iran negotiations
  • Headlines related to the Strait of Hormuz

→ This is now completely a headline-driven market, far more than a data-driven one


■ Scenario Outlook

① Oil rises again

→ Continued JPY weakness
→ USD/JPY moves back toward 160


② Oil reverses lower

→ JPY buying returns
→ Correction toward 158


③ Mixed headlines

→ Range market centered around 159


■ Today’s Key Point

  • Federal Reserve blackout period
    → No monetary policy guidance available

→ The market is now entirely dependent on
Middle East developments + Oil


■ Strategy Points

  • Oil is the top priority
  • Watch the strength of JPY crosses
  • React immediately to headlines

■ Summary

The current market is:

“Oil moves on headlines, and FX moves on oil.”

→ Main path for USD/JPY still points toward 160

→ But sharp reversals must always be respected