Market Maker
Definition of Market Maker
Related Terms
All Or None Order
If so, then the order will be not executed if 999 shares are available. The order will only go through if 1000 shares are available. Otherwise, the order will be canceled.
Beta Coefficient
The formula to calculate the Beta coefficient is:
Beta (β) = Covariance (Ri, Rm) / Variance (Rm)
Where:
- Ri = a stock's return
- Rm = overall market's return
- Covariance = ups & downs of stock returns versus ups & downs of market returns
- Variance = the difference between market returns and its average
Generally, Beta values are of four types:
- Beta < 1.0: stock less volatile than the market
- Beta = 1.0: stock just as volatile as the market
- Beta > 1.0: stock more volatile than the market
- Negative Beta: stock shares inverse relation with the market

