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URL:  http://boards.fool.com/ob-over-the-counter-bulletin-board-sometimes-25632335.aspx

Subject:  Re: .OB and .PK Date:  6/28/2007  11:41 AM
Author:  jrr7 Number:  1877 of 2221

OB = Over-the-counter Bulletin Board (Sometimes written OTCBB)

PK = Pink Sheets

These are stocks that don't qualify to trade on any exchange, due to failure to file the financial reports, low trading volume, poor capitalization, etc.

Most investors should treat these extensions as warning signs. Usually these stocks are complete mysteries beyond speculat