Where can i find the beta coefficient of Sirius Satellite Radio?

Answer 1

There's a couple sites that give free financial information on companies. Yahoo!'s is as good as any, at:

http://finance.yahoo.com/q/ks?s=SIRI

Click on "Key statistics" on the right column navigator.

SIRI has a beta (according to Y!) of 4.52.

However, there are a couple caveats. First, look at the chart. The R-squared looks really low, so I wouldn't count on 4.5x the volatility. Secondly, I don't 100% trust Y!'s beta numbers.