Bond Formulas
used to date:
Bond current yield = coupon / price
In theory:
Value of a bond = coupon (net present value of annuity) + principle
(net present value of lump sum)
Value of a stock (have infinite life) = Dividends per share (net
present value of an annuity for alpha)
Muni Equivalent taxable investment = Municipal
yield / (1 – marginal tax rate)
Convertible bond recapture = premium / bond yield – dividend
for stock
Convertible bond conversion price = current bond price / shares
per bond conversion
Convertible bond conversion premium = marginal price of convertible
bond – cash value / cash value
Convertible bond conversion ratio = face value / conversion price
Convertible bond conversion value = conversion ration X stock
price
Convertible bond downside risk = marginal price – pure bond value
/ marginal price
Convertible bond potential gain = pure bond value – current bond
price / current bond price
Convertible bond pay back period = (current price – stock price)
(current ratio) / coupon – dividend (convertible bond price / convertible
stock price)
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