Optionator|財經線上App不用買

Calculate the value of a range of stock options.

Currently implemented options:

European/American Call/Put

European Forward Start Call/Put

European One-Cliquet

European Knock-in/out Barrier Call/Put

European Forward Start Knock-in/out Barrier Call/Put

European/American Cash or Nothing Call/Put

European/American Assett or Nothing Call/Put

European Floating/Fixed Strike Look-Back Call/Put

Up to three different methods (depending on the type of option) are available to calculate the option price:

Analytic formula (an) Binomial tree (bn) simple Monte Carlo sampling (mc)

You can influence the accuracy of the binomial tree and Monte Carlo method by choosing

the number of time steps (bn,mc) and number of sampled paths (mc) -larger numbers yield more accurate results and take longer time to calculate.

Calculate either option price or determine implied volatility for a given price.

Input values are:

asset value,strike price,expiry (days),risk-free interest rate (% per year), volatility (% over a year) or option price, barrier (for barrier options), forward-start time (days), cash (cash options), rebate (knock in/out options), dividend (% per year, currently only continuous, specific dates to come).

Output values:

option price or volatility, delta, gamma, vega, theta, tho, time value, elasticity

The app features a simple catastrophe estimator (black friday):

Set the probability of a crash (within a year) and the amount of stock value

decrease (%) during the crash. The option price reflects the effect.

Note that this is only a rough estimate and works reasonably well for european options

without fixed-time events (like forward start dates) during the life time of the option.

You can generate 2-dimensional plots of the results using the following choices:

Set the quantitiy to be varied along the horizontal (x) axis.

Choices are stock value, strike price, expiry, interest rate, volatility

Set the quantity for the vertical (y) axis.

Here, choices are\n\noption price, delta, gamma, vega, theta, rho.

Set the range of x values and the number of points to be plotted.

In case of Monte Carlo calculations error bars are displayed,

which you can reduce by increasing the accuracy parameters discussed above.

3d plots to come in future releases.

There is NO guarantee for the correctness of any of the results calculated with this app.

Enjoy!

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