"And with domestic spending slowing, an even wider yield spread is foreseen."

The yield spread for the four-year bond was 17 basis points.

Also, the 10-year French and German yield spread is at a euro-era high.

The yield spread is a way of comparing any two financial products.

The yield spread is a risk premium, and risk varies over time.

Among certificates with longer maturities, the yield spread is extremely narrow.

They noted that the yield spread was very fair considering the amount of debt currently in the market.

At pricing, the yield spread was about 174 basis points more than Treasury securities with a similar maturity.

The yield spread was on the low end of the range traders had expected for the Canadian issue.

"A more restrictive monetary policy tends to produce a narrower yield spread."