Rates were little changed Monday in volatile trading. In economic news, the December Core PCE price index, the Fed’s preferred measure of inflation, was unchanged, and was a tame 1.4% higher than one year ago. Personal Income rose 0.3%, matching forecast. The Institute for Supply Management manufacturing index came in at 48.2, a bit below expectations. Readings below 50.0 indicate contraction in the manufacturing sector. Construction Spending increased by 0.1%. An increase of 0.6% was expected. No other key data will be released today.