Beta Flashcards
Formula for Beta
Alternative Beta Formula
What does beta tell you ?
It quantifies the systematic risk (market-related risk) of an asset:
How sensitive the asset is to market movements
How it contributes to the volatility of a diversified portfolio
Beta = 1
Asset moves in line with the market.
If market goes up 1%, asset goes up 1% (on average).
Systematic risk = equal to market risk.
Fully exposed to market movements.
Beta > 1
Asset is more volatile than the market.
If market rises 1%, asset rises more than 1% (and vice versa).
High systematic risk.
Beta < 1
Asset moves with the market, but less strongly.
Lower systematic risk.
Beta = 0
No correlation with market movements.
Purely idiosyncratic risk.
Return is independent of market → zero systematic risk.
Systematic vs Unsytematic Risk
Be sure do know the difference between Variance and Std Deviation
I have to split the variance into sys risk to calculate beta
Sys vs unsy risk formula and variance