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Consider three zero coupon bonds: 1 0 Y yielding 4 . 4 0 % , 2 0 Y yielding 4 . 6 0 % ,

Consider three zero coupon bonds: 10Y yielding 4.40%,20Y yielding 4.60%, and 30Y yielding 4.50%.
a. Calculate duration and convexity for all three
b. If you want to construct a 100M portfolio of 10Y and 30Y to match the dollar duration of 100M position in 20Y, what is the weight in 5Y and 30Y respectively?
c. What is the $convexity for LONG 100M of 20Y zero? What is $convexity for short 100M portfolio of 10Y and 30Y as constructed in Question 2b?
d. For the long-short duration-neutral portfolio above in Q2c, if yields moved up or down by 10 bps for ALL THREE bonds in a single day, what is the long-short portfolio's duration and convexity PnL?
e. What is the 1-day net interest payment (ie carry) for the long-short
duration-neutral portfolio above in Q2c?
f. What is the break-even amount of parallel movement in yield curve in a single day (breakeven means the convexity pnl will offset daily interest payment)
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