Search results
Results From The WOW.Com Content Network
A risk-reversal is an option position that consists of selling (that is, being short) an out of the money put and buying (i.e. being long) an out of the money call, both options expiring on the same expiration date. In this strategy, the investor will first form their market view on a stock or an index; if that view is bullish they will want to ...
Risk reversal - simulates the motion of an underlying so sometimes these are referred as synthetic long or synthetic short positions depending on which position you are shorting. Collar - buy the underlying and then simultaneous buying of a put option below current price (floor) and selling a call option above the current price (cap).
As above, the PDE is expressed in a discretized form, using finite differences, and the evolution in the option price is then modelled using a lattice with corresponding dimensions: time runs from 0 to maturity; and price runs from 0 to a "high" value, such that the option is deeply in or out of the money.
The synthetic long put position consists of three elements: shorting one stock, holding one European call option and holding dollars in a bank account. (Here is the strike price of the option, and is the continuously compounded interest rate, is the time to expiration and is the spot price of the stock at option expiration.)
The similar situation works among currency forwards, in which one party opens a forward contract to buy or sell a currency (e.g. a contract to buy Canadian dollars) to expire/settle at a future date, as they do not wish to be exposed to exchange rate/currency risk over a period of time.
A long box-spread can be viewed as a long synthetic stock at a price plus a short synthetic stock at a higher price . A long box-spread can be viewed as a long bull call spread at one pair of strike prices, K 1 {\displaystyle K_{1}} and K 2 {\displaystyle K_{2}} , plus a long bear put spread at the same pair of strike prices.
Suppose there is constant risk-free interest rate r and the futures price F(t) of a particular underlying is log-normal with constant volatility σ. Then the Black formula states the price for a European call option of maturity T on a futures contract with strike price K and delivery date T' (with ′) is
Here the price of the option is its discounted expected value; see risk neutrality and rational pricing. The technique applied then, is (1) to generate a large number of possible, but random , price paths for the underlying (or underlyings) via simulation , and (2) to then calculate the associated exercise value (i.e. "payoff") of the option ...