You are trading USD/JPY.
You see a double bottom on the 5-minute chart. You buy.
Price smashes down 50 pips.
I’ve been there. I screamed “Manipulation!”
Meanwhile, on the Bond Desk, a trader just sold $1 Billion of 10-Year Treasuries.
Yields spiked. The Algo bought USD.
I was roadkill.
Key Findings:
Historical Correlation: My analysis confirms that US10Y and USD/JPY have a +0.93 positive correlation (rates up = pair up).
The 2025 Anomaly: I noticed a temporary decoupling (correlation dropping to -0.7) in recent data due to Japan-centric political risk overriding US yields.
The Rule: I trade on the rule that Yields are the driver unless there is a domestic sovereign crisis.
The Delta: Capital Flows to Yield
Money is liquid. It flows to where it is treated best.
If the US Government pays 4.5% risk-free (Bonds) and the German Government pays 2.5%, where do you put your money?
The USA.
To buy US Bonds, you must sell Euros and buy Dollars.
Bond Buying = Currency Strength?
No.
Bond Yields Rising = Currency Strength.
Wait, why?
When people sell bonds, the price of the bond drops, and the Yield rises.
High yields attract new investors.
So, rising yields (Bond Sell-off) leads to future currency buying.
The Strategy: The Spread Play
Don’t look at absolute yields. Look at the Spread.
Trading GBP/USD?
Look at the UK 10Y Gilt Yield minus the US 10Y Treasury Yield.
If the Spread is moving in favor of the UK (UK yields rising faster than US), GBP/USD should rise.
If the price of GBP/USD is rising, but the Spread is falling… Divergence.
The Trade: Trade against the currency move. The bonds are telling the truth. The currency is lying.
The 2025 Context
In 2025, the focus is on “Fiscal Dominance.”
If yields rise because the economy is strong -> Good for Currency.
If yields rise because the government is broke and printing debt -> Bad for Currency.
This is the “Bad Yield Rise.” Watch for it.
Conclusion
Add “US10Y” to your watchlist.
I never take a USD trade without checking the Yield first.
If Yields are spiking up, I do not Short the Dollar.
I know that fighting the bond market is fighting the gravitational pull of the entire financial system.
