Glossary
- Offering price
- Official Market (Amtlicher Markt)
- Offsetting transaction
- Omega (warrants)
- Open Market (Freiverkehr)
- Open outcry
- Open-ended real estate funds
- Opening price
- Opération blanche
- Operational profit
- Option
- Option premium
- Option writer
- Order
- Order book
- Order book statistics
- Order routing
- Ordinary share
- OTC (over-the-counter) trading
- Other types of certificates
- Out of the money (warrants)
- Outperformance certificate
- Overweight
Order book
Book that provides an overview of the current order situation for a specific security.
An order book is used to pool, compare and match the volumes and prices of buy and sell orders for a particular security. Thus, in auction-based trading, the order book supports the price determination procedure.
Market orders, which are to be executed at the best available price, are given first priority in the order book. The remaining orders are sorted and listed, with the bid prices in ascending order and the ask prices in descending order.
Nowadays, most order books are computer-based.
Our glossary explains important financial terms and should not leave any questions unanswered. However, if you are missing a definition, please write to us at redaktion@deutsche-boerse.com. We will then include the term if possible.
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