This excerpt taken from the CCO DEF 14A filed Apr 7, 2008.
Q: Which of my shares may I vote?
All shares of Class A common stock owned by you as of the close of business on March 14, 2008 (the Record Date) may be voted by you. These shares include
shares that are: (1) held directly in your name as the stockholder of record, and (2) held for you as the beneficial owner through a stockbroker, bank or other nominee. Each of your shares is entitled to one vote at the annual meeting.
Bet you've never seen portfolio analytics like these.