再投资率

如果再投资率比回购率低，反之亦然。

If the reinvestment rate is lower than the redemption yield , the opposite is true .

因此如果一直持有债券到收到息票为止，就存在着再投资率风险。

There is therefore a reinvestment rate risk if the bond is held until coupons are received .

所有生息债券都或多或少带有这种再投资率风险&利息越高风险越大。

All coupon-bearing bonds carry this reinvestment rate risk to a greater or lesser extent & the higher the coupon the greater the risk .

针对净现值（NPV）与内部收益率（IRR）的非自洽性问题，认为再投资收益率说并不能很好地解释NPV与IRR非自洽的原因。

In allusion to the reason of the conflict between NPV and IRR , this paper thinks reinvestment rate theory cant explain it well .

财务管理、成本会计理论通常认为其原因在于项目净收益的再投资收益率假设不同。

Financial management and cost accounting theories normally attribute the differences to the different assumptions of ROA ratio in cases when the net profit generated from a certain project is reinvested .

内部收益率法与净现值法假定同一项目、同一时期内产生的现金流入会产生不同的再投资收益率，这种不切实际的假设容易导致择优决策的失误。

Internal income rate method and net present value method is the assumption that the same item and the cash inflow in the same period will have a different earning ratio of re-investment , this kind of impractical assumption causes fault according to the qualification policy-making .

要达到我们的目标，还需要Facebook留存盈利再投资的回报率达到37%。

It would also require extraordinary , 37 % gains on each dollar of retained earnings it reinvests to reach our milestone .