The maturity of new debt issues predicts excess bond returns. When the
share of long-term debt issues in total debt issues is high, future
excess bond returns are low. This predictive power comes in two parts.
First, inflation, the real short-term rate, and the term spread predict
excess bond returns. Second, these same variables explain the long-term
share, and together account for much of its own ability to predict
excess bond returns. The results are consistent with survey evidence
that firms use debt market conditions in an effort to determine the
lowest-cost maturity at which to borrow