Final answer:
The yield to first call and the yield to first par call considers the bond's price, coupon rate, time until call dates, and call price to calculate the return if the bond is called at the first opportunity or held until the par call date. These yields are influenced by current market interest rates and the terms of the bond's call structure.
Step-by-step explanation:
Yield to Call and Yield to Par Call
To calculate the yield to first call and the yield to first par call of a bond, we use the bond's price, the coupon payments, the time to the call dates, and the call prices. In this case, a 15-year bond with a 10% coupon rate, not callable for 5 years, first callable at $105 in 5 years, and first par call in 10 years, priced at $127.5880, requires us to determine the return assuming the bond is called at the first opportunity or held until the par call date.
For the yield to first call calculation, we look at the return if the bond is called at the first call price after five years. The calculation incorporates the annual coupon payments, the call premium above par value, and the current bond price. Similarly, yield to first par call is computed based on the bond being called at the par value after ten years, involving the same factors minus the premium.
The yields are calculated using the formula for bond-equivalent yield, accounting for semiannual interest payments. Since we are not providing calculations directly in this explanation, general guidance suggests that yields will be lower if the bond price is above its call or par value. Thus, we will not pay more than the bond's current market price considering the alternative investments available due to prevailing market interest rates.