http://www.cmcsk.com/faq.cfm http://www.cmcsk.com/faq.cfm CMCSA has voting rights, CMCSK does not. (And there are also Class B shares which are not publicly t

http://www.cmcsk.com/faq.cfm http://www.cmcsk.com/faq.cfm CMCSA has voting rights, CMCSK does not. (And there are also Class B shares which are not publicly traded, and have a guaranteed 1/3rd vote share. They are all under the effective control of the current President/CEO, who is the son of the original founder.)