DataStream is available for Haas Business School students and faculty only in the reference area of the Long Business and Economics Library.
To get started from the desktop window, click on the DataStream Advance icon: ![]()
You will be gathering three statistics to run your beta on your company-- the RI (Total Return Index) stock price for your company, the S&P 500 Composite Index, and the U.S. T-Bill 3 month rate. Below are screen shots from Datastream that show you each of the elements that you need to set to obtain this data and export it to Excel.
Please note that the numbers used in these directions correspond to the numbers on the examples.
You may get two error messages like the ones appearing below. Click on Yes and OK to complete the transfer to Excel.


You will now have an unformatted excel file that looks like this:

Return to the DataStream screen. (To get back to DataStream move the cursor to the bottom of the screen and click on the Advance icon when it appears on the task bar.)
As shown below, you now are going to obtain the S&P 500 Composite Index for the same period of time. You will leave most of the settings that you used to find the RI return on your stock the same, but change the type of data that you are obtaining from equity information to stock index data:
Now you'll go back to your spreadsheet and paste in the data that you just copied. (To get back to your Excel program move the cursor to the bottom of the screen and click on the Excel icon when it appears on the task bar.)
Your spreadsheet will look like this:
Next you'll return to DataStream and acquire the last element, the U.S. 3 month t-bill information:
As with the S&P Index data, you will now go back to you spread sheet and paste in the T-bill information. Follow the same steps outlined above.
Once you have this last column of data pasted into your spread sheet, you can format the information so it properly fits into the cells:
When the table format box opens, just click on OK.
You will then obtain a spread sheet like the one below. This file can be saved on a floppy or to your H drive.