债券的一级市场供应为何反而加宽spread呢？ 一级市场, increase, single, market, issues

johnnyBuz

教材中说，债券的一级市场供应会降低spread，为何在第4册100页的15题答案中，说a surge of single-A rated issues 会导致a widening of spread？ 并且在once the market is cleared of the increase in supply of single A rated issues， the spread will narrow？谢谢！