02/09/2015 13:02:45 Free Membership Login
 Search for a Term:           
#    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z    

What is Beta?

Definition of Beta

The measure of an asset's risk in relation to the market (for example, the S&P500) or to an alternative benchmark or factors. Roughly speaking, a security with a beta of 1.5, will have move, on average, 1.5 times the market return. [More precisely, that stock's excess return (over and above a short-term money market rate) is expected to move 1.5 times the market excess return).] According to asset pricing theory, beta represents the type of risk, systematic risk, that cannot be diversified away. When using beta, there are a number of issues that you need to be aware of: (1) betas may change through time; (2) betas may be different depending on the direction of the market (i.e. betas may be greater for down moves in the market rather than up moves); (3) the estimated beta will be biased if the security does not frequently trade; (4) the beta is not necessarily a complete measure of risk (you may need multiple betas). Also, note that the beta is a measure of comovement, not volatility. It is possible for a security to have a zero beta and higher volatility than the market.
Do you have a question that has not yet been answered? Let us know.
Tel: 0207 0700 961 or Email: support@advfn.com

FTSE 100 Index

FTSE 100 Index intraday chart

Gulf Keystone

Gulf Keystone Chart
 GKP Chart  GKP Chat
 GKP Share Price  GKP Level 2
 GKP Info  Free ADVFN account

Top Investment Questions



Your Recent History
LSE
GKP
Gulf Keyst..
LSE
QPP
Quindell
FTSE
UKX
FTSE 100
LSE
IOF
Iofina
FX
GBPUSD
UK Sterlin..
Stocks you've viewed will appear in this box, letting you easily return to quotes you've seen previously.

Register now to create your own custom streaming stock watchlist.

By accessing the services available at ADVFN you are agreeing to be bound by ADVFN's Terms & Conditions

1 site:2 us 150902 13:02