You are given information concerning a series of fixed-rate bonds that constitute a portfolio. Assume each security has a face value of $100 and pays coupons semi-annually. Derive the portfolio's metrics:

Holdings $ Investment weights % Coupon % Yield to Maturity % Duration (Years) Bond 1 $25,000,000 - 2.75% 1.16% 3.60

Bond 2 $75,000,000 - 3.10% 2.22% 4.52

Bond 3 $200,000,000 - 1.65% 1.89% 9.96

Bond 4 $60,000,000 - 0.75% 1.02% 2.78

Bond 5 $175,000,000 - 2.25% 2.45% 6.65

Portfolio - - - - -

2. Following on from above Question, derive the portfolio's modified duration and compute the sensitivity of the portfolio to a change in its yield to maturity. Assume a change of 35bps occurs in either direction. For this exercise, the portfolio's aggregate value is $100 and there is no convexity.

3. Recompute the metrics of the portfolio in Question 1 assuming each security contributes equally to the portfolio. Discuss why the equally weighted portfolio is an effective attribution tool?