## Beta Stock CalculatorCreated by Arturo Barrantes Last updated: Oct 14, 2021 - What does beta mean in stocks?
- Formula for stock beta
- How to calculate beta of stock? An example
- How to interpret the beta coefficient?
- Other concepts for investing risk management
- FAQ
Show - Beta Stock Calculator
- What does beta mean in stocks?
- Formula for stock beta
- How to calculate beta of stock? An example
- How to interpret the beta coefficient?
- Other concepts for investing risk management
- What is a good beta coefficient of a stock?
- What is the importance of the beta coefficient?
- How to interpret the beta coefficient of a stock?
- How do I calculate the beta value of a stock?
## What does beta mean in stocks?
Using a statistical approach, The risk of the market is represented by its We tend to reduce such volatility in the portfolio by diversifying it with several stocks with different betas (for example, high beta stocks with low beta stocks).
Another main way of using the stock beta definition is to calculate the relationship between the expected return of an asset over the systematic risk. Sounds complex, eh? You can check more in our capital asset pricing model calculator. ## Formula for stock beta
**First, we have to calculate the returns**of stock either by using our cool stock calculator or the following formula:rstock,t = (Pricet+1 - Pricet) / Pricet **Then, we conduct the same operation for the benchmark.**For USA companies, we can use the SP500 or the NASDAQ-100 index. Here we could use the SPY ETF or the QQQ ETF respectively. We can download the daily prices from the NASDAQ website.Again, we have to calculate the returns of the benchmark (market): rmarket,t = (Pricet+1 - Pricet) / Pricet Once we have the dataset of the returns, **we calculate the variance of the returns of the market, and the covariance of the returns of the market and the stock.****Finally, we divide the covariance by variance and get beta:**β = Covariance(rmarket, rstock) / Variance(rmarket)
Now you know how to calculate the beta of a stock using the stock beta formula. In the next paragraph, we will analyze a real-life example. ## How to calculate beta of stock? An exampleFor this example, we are going to consider the following company: Electronic Arts, stock symbol: EA and compare it to the SP500 ETF: SPY. Only the monthly prices for the last five years have been included. Note we have 61 data points that belong to the monthly data of the last five years. Then we would have: rstock,1 = (84.98-80.93)/80.83 = 0.0513, the first return of the historical prices of Electronic Arts stock. rstock,60 = (145.21-143.79)/143.79 = 0.0098, the last return that can be calculated for the stock. Similarly, rmarket,1 = (198.13-198.12)/ 198.12= 5.0474 x 10-5, the first return of the historical prices of SPY ETF. rmarket,60 = (451.56-438.51)/438.51 = 0.0297, the last return that can be calculated for the benchmark Once we obtain all the returns in between, we continue with the covariance and variance: Covariance(rmarket,rstock) = 0.00163133 Variance(rmarket) = 0.00181176
Finally, we calculate the beta of our stock: β = 0.00163133 / 0.00181176 = 0.900410 The result can be rounded to 0.90, which is the result we find over a famous stock screener: Yahoo finance. On the other hand, please check the next figure: Notice that the stock (EA) has a positive correlation with the benchmark price (SPY); both have increased their value over time, but we notice the benchmark gained more upside than the stock (128% vs. 80%).
## How to interpret the beta coefficient?A company with small market capitalization that presents amazing revenue growth, will very likely surpass the returns of the benchmark; thus, showing a beta higher than one. Lets say β = 2. A beta of 2 means the stock is 100% more volatile than the market. If the market moves up 10%, the theory says, the stock will return a positive 20%. However, the very same company, with the same beta, can be highly leveraged with a poor interest coverage ratio. Consequently, it can lose 20% when the market loses just 10%. Beta has to be always analyzed together with other financial ratios such as return on capital employed or free cash flow growth. However, we have to adapt our analysis and define which investing strategy we are going to follow based on the five beta cases: **β > 1**As mentioned above,**a company's returns with such a beta will swing more wildly than the market.**With β = 1.5, if the market loses 10%, the stock would lose 15%. Vice versa, the stock would gain 15% for a market gain of 10%. Technological and innovative companies are considered high beta stocks.**β = 1**It means the stock returns**mirror the returns of the market**to which it is compared. If the benchmark goes up 10%, the stock will go exactly 10%. A mutual fund that emulates the SP500 would have β = 1.**β < 1**The stock is**less volatile**than the benchmark. Some examples are well-positioned, anti-recession businesses like Coca-Cola or Johnson & Johnson. Such companies will experience less percentual drawdown compared to the market because they are more stable and solid than the average companies of the market.**β = 0**The asset shows**no correlation**with the market. Cash, for example, is considered to have zero correlation with the returns of the market. It will keep its value (considering no inflation) regardless if the broad market goes up or down.**β < 0**Negative beta stocks show an opposite correlation compared to the benchmark. It means when the market goes up, the stock goes down and vice-versa. The Vanguard Long-Term Bond Index ETF showed a negative beta compared to the SPY ETF from 2011 to 2019.
Notice in the next chart the reaction of the following stocks in the market crash of March 2020: Fortinet (β = 1.12), Johnson & Johnson (β = 0.7), and the market, SPY (β = 1). The company with the biggest beta experienced the significant drawdown: Fortinet (-37.61% from maximum price previous to the crash); meanwhile, the company with the lowest beta had the least drawdown: Johnson & Johnson (-27.83%). This evidence helps prove the stock beta definition. The market, with a beta in between, experienced a drawdown in the middle. ## Other concepts for investing risk managementHere we will mention two points to be considered in the risk management related to this beta calculator. If you are looking for less risk in investing, including low beta stocks or negative beta stocks/assets are the best idea; however, **buying the asset at the right price is critical**. We recommend you calculate the fair price of the stock you plan to acquire by using our discounted cash flow calculator.Unlevered beta is another way of **measuring the risk of a company**in the stock market but without considering the effects of corporate debt in the business.
## FAQ## What is a good beta coefficient of a stock?The proper beta coefficient is the one in accordance with the ## What is the importance of the beta coefficient?The beta of a stock is of utmost importance since it indicates ## How to interpret the beta coefficient of a stock?The meaning of stock beta value is the following: - Beta > 1: The stock will rise or fall
**more aggressively**than the market. - Beta = 1: The stock will
**mirror**the market price movements. - 0 < Beta < 1: The stock will rise or fall
**less aggressively**than the market. - Beta = 0: The stock
**does not have any price correlation**relative to the market. - Beta < 0: The stock price will go in the
**opposite direction**compared to the market.
## How do I calculate the beta value of a stock?To calculate the beta of a stock, we need its historical prices and the same data from the market we want to compare. We recommend a long-term approach: 5 years of monthly prices. **Determine the returns**between consecutive periods for both the stock and the market over the whole period under consideration.- Compute the
**variance of the returns**of the market. - Evaluate the
**covariance of the returns**of the market and the stock. - Finally, calculate beta by
**dividing**the covariance by the variance.
Arturo Barrantes 1st day Asset price $ 1st day Benchmark price $ Enter at least four pairs of asset and benchmark prices. Check out 135 similar investment calculators 401kAfter-tax cost of debtAltman Z-Score 132 more |