1. **State the problem:**
We are given a bond with face value $1000$, current price $950$, annual coupon rate 4%, and maturity 4 years. We need to find:
(i) Current yield
(ii) Yield to maturity (YTM)
2. **Formulas and explanation:**
- Current yield is calculated as the annual coupon payment divided by the current price:
$$\text{Current Yield} = \frac{\text{Annual Coupon Payment}}{\text{Current Price}}$$
- Yield to maturity (YTM) is the interest rate $r$ that satisfies the equation:
$$950 = \sum_{t=1}^4 \frac{40}{(1+r)^t} + \frac{1000}{(1+r)^4}$$
where $40 = 4\% \times 1000$ is the annual coupon payment.
3. **Calculate current yield:**
Annual coupon payment = $1000 \times 0.04 = 40$
$$\text{Current Yield} = \frac{40}{950} \approx 0.0421 = 4.21\%$$
4. **Calculate yield to maturity (YTM):**
We solve for $r$ in:
$$950 = \frac{40}{(1+r)} + \frac{40}{(1+r)^2} + \frac{40}{(1+r)^3} + \frac{40}{(1+r)^4} + \frac{1000}{(1+r)^4}$$
This is a nonlinear equation and typically solved by trial, interpolation, or financial calculator.
5. **Approximate YTM by trial:**
Try $r=5\%$:
$$\text{Price} = \frac{40}{1.05} + \frac{40}{1.05^2} + \frac{40}{1.05^3} + \frac{40}{1.05^4} + \frac{1000}{1.05^4} \approx 38.10 + 36.29 + 34.56 + 32.91 + 822.70 = 964.56$$
Price is higher than 950, so try higher $r$.
Try $r=6\%$:
$$\text{Price} = \frac{40}{1.06} + \frac{40}{1.06^2} + \frac{40}{1.06^3} + \frac{40}{1.06^4} + \frac{1000}{1.06^4} \approx 37.74 + 35.59 + 33.56 + 31.64 + 792.09 = 930.62$$
Price is lower than 950, so YTM is between 5% and 6%.
6. **Interpolate linearly:**
$$r \approx 5\% + \frac{964.56 - 950}{964.56 - 930.62} \times (6\% - 5\%) = 5\% + \frac{14.56}{33.94} \times 1\% \approx 5.43\%$$
**Final answers:**
(i) Current yield $\approx 4.21\%$
(ii) Yield to maturity $\approx 5.43\%$
Bond Yields D1Fff0
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.