Seeing a solid wall of demand can induce FOMO (Fear Of Missing Out), prompting others to place their own buy orders just above the wall to ensure they are filled, which can drive the price upward. Strategic Uses and Manipulation Buy Wall Definition - CoinMarketCap

When a trader or group (often referred to as a "whale") places a buy order for a disproportionately large amount of Bitcoin, it creates a visual "wall" on market depth charts .

In cryptocurrency trading, a is a massive buy limit order—or a cluster of many smaller buy orders—at a specific price level in an exchange's order book . How Buy Walls Work

The wall acts as a temporary floor; for the price to drop further, sellers must first "eat through" the massive volume of the buy order.

To other traders, a buy wall often signals strong demand and a potential price bounce.