# Option mathematical formula

### Black-Scholes formula

As a result, time value is often referred to as an option's extrinsic value since time value is the amount by which the price of an option exceeds the intrinsic value. Time value is essentially the risk premium the option seller requires to provide the option buyer the right to buy or sell the stock up to the date the option expires.

Typically, stocks with high volatility have a higher hysteresis trading for the option to be profitable or in-the-money by expiry.

As a result, the time value—as a component of the option's premium—is typically higher to compensate for the increased chance that the stock's price could move beyond the strike price and expire in-the-money.

For stocks that are not expected to move much, the option's time value will be relatively low.

One of the metrics used to measure volatile stocks is called beta. Beta measures the volatility of a stock when compared to the overall market.

Volatile stocks tend to have high betas primarily due to the uncertainty of the price of the stock before the option expires. However, high beta stocks also carry more risk than low-beta stocks.

## Black Scholes Model Definition

In other words, volatility is a double-edged sword, meaning it allows investors the potential for significant returns, but volatility can also lead to significant losses. The effect of volatility is mostly subjective and difficult to quantify.

When investors look at volatility in the past, it is called either historical volatility or statistical volatility. Historical volatility looks back in time to show how volatile the market has been.

Implied volatility measures what options traders expect future volatility will be. As such, implied volatility is an indicator of the current sentiment of the market. It option mathematical formula the trading price of GE, several strike prices, and the intrinsic and time values for the call and put options.

- In particular, the model estimates the variation over time of financial instruments.
- Black–Scholes model - Wikipedia
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At the time of this writing, General Electric was considered a stock with low volatility and had a beta of 0. The table below contains the pricing for both calls and puts that are expiring in one month top section of the table.

The bottom section contains the prices for the GE options that expire in nine months. Option mathematical formula is a much more volatile stock with a beta of 3.

Let's compare the GE 35 call option with nine months to expiration with the AMZN 40 call option with nine months to expiration.