Depth of Book Snapshot

A Market Snapshot Message is a type of data transmission to provide a real-time, comprehensive view of an Alternative Trading System order book. This message is crucial for market participants, as it offers a snapshot of current order depths.

1. Snapshot Content:

• The Market Snapshot Message typically includes key information such as the highest bid prices, lowest ask prices, and the size of orders at each price level.
• Market Snapshot Messages are sent out at regular intervals or triggered by specific market events (like significant price movements).
• The frequency of these messages can vary depending on the market's activity level.

2. Transmission to Participants:

• These messages are disseminated to all market participants subscribed to the data feed.
• Market Snapshot Messages can involve significant amounts of data, especially for highly liquid securities.
• Efficient data management and processing systems are required to handle this information effectively.

3. Complementing Order Book Updates:

• Market Snapshot Messages provide a comprehensive view at a specific moment; they are often complemented by continuous order book updates that show changes in real-time.