Arrayit Corporation (ARYC)

[MikeCr]

I think expert market is a lower OTC tier than the grey market.

The Expert Market is a private market to serve broker-dealer pricing and best execution needs in securities that are restricted from public quoting or trading. Restrictions can be based on issuer requirements, security attributes, investor accreditation and/or suitability risks.

Grey Market, "OTC" or "Other OTC" is a security that is not currently traded on the OTCQX, OTCQB or Pink markets. Broker-dealers are not willing or able to publicly quote OTC securities because of a lack of investor interest, company information availability or regulatory compliance.

OTC Tiers

OTCQX
OTCQB
Pink Current
Pink Limited
Pink No Information
FINRA BB Only
Grey Market
Expert Market