I think it is worth going through this equation again, this time using a six month investment period for reference.
C is the Coupon = $70k.
F is the Face Value of the bond (to be determined)
P is the current market price of the bond: $1,012.5k
n is the 'investment periods' to maturity. = 3,3507 sets of six months (post 21)
Y, the yield to maturity we are told is 16.2308% for the year, implying a multiplication factor of 1.162308. For six months the multiplication factor must be the square root of that figure.: 1.078104. This is equivalent to a yield to maturity of 7.8104% compounding for every six months.
F = [P(2+nY) - 2nC]/(2-nY)
= [ $1,012.5k(2 + 3.3507x0.078104) - 2 x 3.3507 x $70k ] / (2-3.3507 x 0.078104)
= [ $2,290.0k - $469.1k ] / 1.7383
= $1,047.52k
This is slightly different result to the annual figure calculation that I did before (post 24), because in this calculation the coupon is generated more frequently (every six months, not summed over a year). That in turn means you need slightly less discount on your bond purchase price to create the same coupon income stream per unit of investment time.
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