Understanding and Estimating Beta

Corporate Finance Fundamentals · 5:58

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Lyrics

[Verse 1]
When stocks dance with the market's sway
Some move fast and some move slow
Beta tells us just which way
Your investment's gonna go
If the market jumps up ten percent
Will your stock rise more or less?
Beta is the measurement
That helps predict success

[Chorus]
Beta shows the risk you take
When the market starts to shake
One means moving with the flow
Higher means more highs and lows
Beta, beta, tells the tale
Risk and return on market scale
Regression helps us find the way
Using data day by day

[Verse 2]
Take your stock's returns each month
Compare them to the S&P
Plot the points and see the hunch
There's a pattern you can see
Draw a line through all those dots
The slope will be your beta score
Steeper lines mean bigger shots
Flatter means much less in store

[Chorus]
Beta shows the risk you take
When the market starts to shake
One means moving with the flow
Higher means more highs and lows
Beta, beta, tells the tale
Risk and return on market scale
Regression helps us find the way
Using data day by day

[Bridge]
Zero beta stays the same
No matter what the market does
One point five means bigger game
One and half times all the buzz
Defensive stocks have beta low
Aggressive stocks have beta high
Historical data helps us know
Which stocks will touch the sky

[Verse 3]
Covariance with market moves
Divided by the market's spread
This formula helps to prove
What the regression line has said
Three to five years of data
Makes the estimate more true
Beta helps evaluate your
Portfolio's risk profile too

[Chorus]
Beta shows the risk you take
When the market starts to shake
One means moving with the flow
Higher means more highs and lows
Beta, beta, tells the tale
Risk and return on market scale
Regression helps us find the way
Using data day by day

[Outro]
When markets rise your beta shows
How much your stock price grows
When markets fall it tells you too
Just how much risk you're going through

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