1.   That spread represents the premium investors get for holding riskier bonds.

2.   That yield spread represents the premium investors are paid for holding riskier debt.

3.   The spread below Treasuries represented the lowest relative cost of borrowing ever achieved by a corporate borrower in the U.S. market, Seigel said.

4.   One basis point is one one-hundredth, and higher spread represents premium risks in holding the bonds.