1.   Canelo noted, for example, that the yield curve was flattening, which historically has come as the economy has begun to show signs of slowing.

2.   If more signs of brisk economic growth appear, the yield curve may flatten even more.

3.   If the yield curve flattens, meaning that the spread between long- and short-term bonds is reduced or eliminated, the leverage effect will be lost.

4.   It will be hard for the yield curve to flatten further, he said.

5.   Partly as a result, the Portuguese yield curve flattened significantly.

6.   Some traders had expected the curve to flatten over the last few weeks as longer-term yields become ever more attractive.

7.   That combination tends to do better than holding the securities with maturities in between as the curve flattens.

8.   That is causing the yield curve to flatten, he said, meaning the differential between long- and short-term rates is shrinking.

9.   The curve flattens when the difference narrows.

10.   The yield curve could flatten simply because long rates are falling faster than short rates.