Bank of Japan (BOJ) — Yield Curve Control & the Yen

Overview

The BOJ has experimented with the most extreme monetary policy in modern history — negative rates, yield curve control, and massive equity ETF purchases. Its policy shifts shake global markets. Understand how YCC adjustments affect global bond markets and the yield curve. Explore the yen carry-trade unwind and its impact on forex and global equities.

Key Takeaways

• Yield Curve Control (YCC): the BOJ directly targets the 10-year JGB yield, capping it at a set level.
• The BOJ held negative policy rates (-0.10%) from 2016 to 2024 before finally exiting.
• BOJ is the largest holder of Japanese government bonds and one of the biggest owners of Japanese equities.
• Any BOJ tightening sends shockwaves through carry trades — the yen can spike 5-10% in weeks.

Practical Tips

• USD/JPY is the primary expression of BOJ policy — watch for surprise YCC adjustments.
• The yen carry trade (borrow cheap yen, invest in higher-yield assets) unwinds violently when BOJ hawkishness surprises.
• BOJ meetings don't follow a regular schedule like the Fed — always check the calendar.