How to get beta

Hi monkeys, I've been trying to find a clear answer for this question but I couldn't find one online. The question is, how do we get a beta for companies when calculating CAPM? I know for private companies, we look at beta of comparable companies, unlever each one, and usually look at their median. But I only see this generic answer and many guides/online sources reiterate or don't explicitly say how to get beta for public companies.

They have their own historical beta, and is more precise in a sense that every company's specific profiles and features are different, thus its own historical beta would reflect its current beta better. But some say looking at its comparable companies' betas is safer because it gives you greater amount of data, thus safer and more reflective of the market sentiment. Could anyone clarify this confusion? Thanks

4 Comments
 

I don't get what you mean by if the question is completely serious. Did you read my question? I asked if it's a must to go through the process of looking up levered betas of comparable companies, unlever them, and take mean/median of them, and relever it, even for public companies that have their own historical betas.

 
Most Helpful

bluelion, I think the norm is to look at comps and go through the process lifeboat described. Additionally, you can find a company's beta by looking at its historical returns. Download the company's daily adjusted returns as well as the S&P 500's daily adjusted returns and run the following regression in excel, R, stata, etc.: Rs = B0 + B1(Rm).

Step 1 - Calculate the daily returns (for example, the excel formula for returns on day 2 would be =ln(day 2/day 1) for the company and the market Step 2 - Run the regression (in excel it's under data, data analysis, then select regression. For the dependent variable (Input Y Range in excel and Rs in the regression formula) select the returns for the company. For the independent variable (input X Range and Rm in the regression formula) select the returns for the market. Run the regression. Step 3 - You should see a regression output. B0 indicates the intercept and B1 indicated the beta you're looking for (look at the coefficient value).

 

Quam et quos itaque fuga quia cupiditate suscipit. Quia labore nostrum dolor aut laborum ut dicta libero. Ut voluptates qui qui quis ea nostrum.

Soluta est nesciunt placeat soluta debitis. Nobis occaecati aut atque quia saepe eveniet qui. Sequi inventore enim totam consequuntur. Voluptatem aperiam qui quibusdam est quia necessitatibus aliquid. Sit reprehenderit quis culpa. Quas sed in ducimus temporibus illo vitae minima. A aut saepe fuga minus.

Corporis dolor cupiditate dolor porro earum. Suscipit et aut tenetur tenetur nobis laborum. Sapiente at iste eveniet officia necessitatibus eum corrupti.

Itaque quasi cum amet est et est rem. Quidem id vero commodi et inventore cum repellat exercitationem. Officia excepturi nisi et eius et et.

Career Advancement Opportunities

July 2026 Investment Banking

  • Evercore 01 99.4%
  • Moelis & Company 01 98.9%
  • JPMorgan 01 98.3%
  • Guggenheim Partners 01 97.8%
  • Morgan Stanley 07 97.2%

Overall Employee Satisfaction

July 2026 Investment Banking

  • Moelis & Company No 99.4%
  • Evercore No 98.9%
  • Morgan Stanley 01 98.3%
  • Banco Santander 02 97.7%
  • BMO Capital Markets 12 97.2%

Professional Growth Opportunities

July 2026 Investment Banking

  • Evercore 01 99.4%
  • Moelis & Company 01 98.9%
  • Morgan Stanley 06 98.3%
  • Goldman Sachs 01 97.8%
  • JPMorgan 01 97.2%

Total Avg Compensation

July 2026 Investment Banking

  • Vice President (16) $429
  • Associates (46) $258
  • 3rd+ Year Analyst (8) $210
  • 2nd Year Analyst (22) $179
  • Intern/Summer Associate (14) $159
  • 1st Year Analyst (80) $150
  • Intern/Summer Analyst (73) $101
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”