Level 1 Data
Perfect for most traders.
Shows top-of-book pricing: the best current bid and ask prices, their sizes, and the last traded price.
Level 2 Data
For traders needing more data.
Includes all Level 1 data plus the full depth of the order book (DOM).
You'll see multiple bid and ask levels at different prices, which helps you understand market liquidity and order flow.
Note: Some indicators and chart types -such as DOM, Range charts, or Cumulative Delta- require Level 2 data.