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To use these models, traders input information such as the stock price, strike price, time to expiration, interest rate and volatility to calculate an option’s theoretical price. To find implied ...
An interest rate option is a specific financial derivative contract whose value is based on interest rates. [1] Its value is tied to an underlying interest rate, such as the yield on 10 year treasury notes. Similar to equity options, there are two types of contracts: calls and puts.
For example, for bond options [3] the underlying is a bond, but the source of uncertainty is the annualized interest rate (i.e. the short rate). Here, for each randomly generated yield curve we observe a different resultant bond price on the option's exercise date; this bond price is then the input for the determination of the option's payoff.
A short time later, the option is trading at $2.10 with the underlying at $43.34, yielding an implied volatility of 17.2%. Even though the option's price is higher at the second measurement, it is still considered cheaper based on volatility. The reason is that the underlying needed to hedge the call option can be sold for a higher price.
The Black model extends Black-Scholes from equity to options on futures, bond options, swaptions, (i.e. options on swaps), and interest rate cap and floors (effectively options on the interest rate). The final four are numerical methods, usually requiring sophisticated derivatives-software, or a numeric package such as MATLAB.
The Black model (sometimes known as the Black-76 model) is a variant of the Black–Scholes option pricing model. Its primary applications are for pricing options on future contracts, bond options, interest rate cap and floors, and swaptions. It was first presented in a paper written by Fischer Black in 1976.
Tree-based bond option valuation: 0. Construct an interest-rate tree, which, as described in the text, will be consistent with the current term structure of interest rates. 1. Construct a corresponding tree of bond-prices, where the underlying bond is valued at each node by "backwards induction":
%If Unchanged Potential Return = (call option price - put option price) / [stock price - (call option price - put option price)] For example, for stock JKH purchased at $52.5, a call option sold for $2.00 with a strike price of $55 and a put option purchased for $0.50 with a strike price of $50, the %If Unchanged Return for the collar would be: