Let's use the Portfolio Visualizer website (https://www.portfoliovisualizer. com/). We are going to use it to look at historical estimates of the CAPM (and other multifactor models) for Berkshire Hathaway.

On the main page of the website, click on the "Factor Regression" link. On this webpage, put the ticker symbol for Berkshire Hathaway (brk.a) in the window labeled "Tickers". In the window labeled "Equity Factor Model", choose CAPM. Click on the "Factor Analysis" button. This will give you the results of the CAPM regression.

You will see that the estimated is quite high (about 8.5% per year). What is Berkshire Hathaway's ?