Math Problem Statement

(Yield to​ maturity)**** A​ bond's market price is

​$775775.

It has a

​$1 comma 0001,000

par​ value, will mature in

1414

​years, and has a coupon interest rate of

99

percent annual​ interest, but makes its interest payments semiannually. What is the​ bond's yield to​ maturity? What happens to the​ bond's yield to maturity if the bond matures in

2828

​years? What if it matures in

77

​years?

Question content area bottom

Part 1

a. The​ bond's yield to maturity if it matures in

1414

years is

enter your response here​%.

​ (Round to two decimal​ places.)

Solution

To calculate the Yield to Maturity (YTM) for the bond, we use the following formula implicitly:

P=t=12NC(1+YTM/2)t+F(1+YTM/2)2NP = \sum_{t=1}^{2N} \frac{C}{(1 + YTM/2)^t} + \frac{F}{(1 + YTM/2)^{2N}}

Where:

  • PP: Bond price ($775)
  • FF: Par value ($1,000)
  • CC: Semiannual coupon payment (9%×1,0002=45\frac{9\% \times 1,000}{2} = 45)
  • NN: Number of years to maturity
  • YTMYTM: Yield to maturity (semiannual rate, to solve for)

For 14 years:

  • N=14N = 14 years, hence 2N=282N = 28 periods
  • Semiannual coupon payment = 45

Steps:

  1. Plug the values into the formula: 775=t=12845(1+YTM/2)t+1000(1+YTM/2)28775 = \sum_{t=1}^{28} \frac{45}{(1 + YTM/2)^t} + \frac{1000}{(1 + YTM/2)^{28}}

  2. Solve iteratively for YTMYTM (semiannual rate) by trial-and-error, approximation, or using a financial calculator or software.

  3. Double the semiannual rate to get the annual YTM.

I'll compute this.from scipy.optimize import fsolve

Given values

P = 775 # Price of the bond F = 1000 # Face value of the bond C = 45 # Semiannual coupon payment N = 14 # Number of years to maturity periods = 2 * N # Total number of periods

Define the YTM function

def bond_price(ytm): return sum(C / (1 + ytm/2)**t for t in range(1, periods + 1)) + F / (1 + ytm/2)**periods - P

Solve for YTM

initial_guess = 0.1 # Initial guess for YTM ytm_solution = fsolve(bond_price, initial_guess)[0]

Convert semiannual rate to annual rate

ytm_annual = ytm_solution * 2

ytm_annual0.248622305392362270.24862230539236227successThe bond's yield to maturity (YTM) if it matures in 14 years is approximately 24.86% (annualized, rounded to two decimal places).

Now, I'll calculate the YTM if the bond matures in 28 years and 7 years.# Recalculate for 28 years (2N = 56 periods) and 7 years (2N = 14 periods) def calculate_ytm(years_to_maturity): periods_new = 2 * years_to_maturity # Total periods def bond_price_new(ytm): return sum(C / (1 + ytm/2)**t for t in range(1, periods_new + 1)) + F / (1 + ytm/2)**periods_new - P

ytm_new = fsolve(bond_price_new, initial_guess)[0]
return ytm_new * 2  # Convert semiannual to annual rate

Calculate YTM for 28 years and 7 years

ytm_28_years = calculate_ytm(28) ytm_7_years = calculate_ytm(7)

ytm_28_years, ytm_7_years(0.23516192759278315, 0.2834421646851707)(0.23516192759278315, 0.2834421646851707)successThe bond's yield to maturity (YTM) is as follows:

  1. If the bond matures in 28 years: Approximately 23.52% (annualized).
  2. If the bond matures in 7 years: Approximately 28.34% (annualized).

Would you like a detailed explanation of these calculations or any further clarifications?


Expanding Questions:

  1. How does the time to maturity generally affect a bond's yield to maturity?
  2. What is the relationship between bond price and YTM?
  3. Why does the YTM change as the bond's maturity period changes?
  4. Can this bond be considered a high-yield or junk bond based on these results?
  5. How would the YTM change if the bond price were higher than $775?

Tip:

When solving for YTM, using software or financial calculators can simplify iterative computations, as manual trial and error can be time-consuming.

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Math Problem Analysis

Mathematical Concepts

Bond valuation
Yield to maturity (YTM)
Present value
Time value of money

Formulas

P = Σ(C / (1 + YTM/2)^t) + F / (1 + YTM/2)^n
Semiannual coupon payment = (Annual Coupon Rate × Par Value) / 2
Annualized YTM = Semiannual YTM × 2

Theorems

Discounting principle
Iterative approximation for solving non-linear equations

Suitable Grade Level

Undergraduate - Finance or Business Studies