5 letter symbols

A quick question I'm sure one of you guys knows off the top of your head:

Why do some symbols on the NMS have 5 letter symbols - like CMCSK?

Thanks,

Swish

 

The 5th letter denotes if it's a special issue. Examples:

Y = ADR
Q = Bankruptcy
E = Delinquent SEC filings
D = new listing/symbol

etc.

here's a link to them http://www.financialchat.com/tools/fifth_letter.asp

 

Thanks TA for the info.......