What counts as a wall
The book is read in price buckets of three significant figures, about 20 a side. A bucket is a wall when it is:
- within ±2% of the mid price,
- at least 3× the median bucket in that band, both sides pooled,
- and at least $250k for SOL.
How to read it
A wall is displayed size, not intent. Orders get pulled before price arrives, and some are placed to be seen. A wall that holds while it's hit means something different from one pulled as price nears, and how long it has held says more than its size.
Glossary: resting liquidity, order book, liquidity heatmap. See the data sources. Research tools and education, not financial advice.