The basic principles governing the Securities Market Model in Greece can be defined as follows:

• Rule Book based
• Order Driven Market with Market Makers participation (quotes)
• Pre and post Anonymous Trading
• Price / Time Priority is applied
• Use of Volatility Interrupters
• Fully Electronic Trading is employed in order to minimize the trading cost
• Use of a Central Counterparty for Clearing

Athens Exchange trading model supports nine trading segments for ATHEX Cash market. Εach of those segments has:

• Specific time periods and phases of trading
• Specific categories of securities are traded
• Specific trading methods and trading boards are applied

A security can be traded only in one market.

ATHEX listed companies are classified into sub-markets mainly based on their capitalization.