The core element of the Eurex market model is the central order book, into which all orders and quotes are entered during the trading day.

The only purchase and sale transactions that do not go through the central order book are OTC transactions (where the price is agreed off-exchange and then recorded at Eurex Clearing AG for clearing and settlement purposes), as well as clearing and settlement-related transactions like option exercises/assignments and notifications/allocations against positions in fixed income futures.