• Pink Quote OTCBB: These companies are listed in both the pink sheets system and the OTCBB. The bulk of all OTC stocks will be dually listed. The OTCBB requires these companies to report to the SEC frequently.
• OTCBB Only: This is obvious, as these are companies only listed on the OTCBB market.
• Current Information: These are companies that are providing information with either the SEC or the OTC Disclosure and News Service. This information is no more than six months old. In order for companies to stay at this tier and not be moved down, they need to have filed a quarterly or annual report within 75 days after the last quarter has ended. The pink sheets OTC market will verify that the information has been posted.

Distressed Tier
This tier is not for the faint of heart. Companies falling in this tier will all be listed under:

• Limited Information: These are companies that fit one of the following criteria:
  
  
  • They have information that is available to the general public but is older than six months and does not usually conform to the pink sheets OTC-market guidelines.
  • These companies could also have filed with the SEC but have not updated their information.
  • You will also see companies here if they have filed information with the OTC Disclosure and News Service. They must have, at a minimum, a balance sheet, income statement and shares outstanding within the last six months.
  • Companies that have gone bankrupt will also appear on this list. These newly bankrupt companies are required to file information with the OTC Disclosure and News Service promptly.

Read more: The Over-The-Counter Market: An Introduction To Pink Sheets http://www.investopedia.com/articles/fundamental-analysis/08/pink-sheets-ottcb.asp#ixzz4lz3T5m6O 
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Bold by me.  Schwab said Edig is no longer on the OTCBQ, just the Pinks.  Do not know if this sheds any light or not.