When Institutions want to buy:

Institutions temporarily push the price outside of the Trading Range. This is done so 1. They can buy at a cheaper price and 2. this creates Volatility / Liquidity in the market.

During a Stop Loss Hunt, Institutions will place a large market sell order to break through the Buy Wall and to stop out the Retail Traders who went Long.
Breaking through the Buy Wall will also trigger Retail Traders’ Shorts.

Now the Institutions can buy / accumulate at a cheaper price.
The Institutions’ buying campaigns causes the price to shoot back up which stops out the recently opened Retail Shorts.

The opposite of this logic applies when Institutions want to sell.