Scalper’s Secret: How to Read Buy & Sell Walls Like a Pro.
Example: BTC/USDT Order Book
Sell Orders (Asks)
66,100 (10 BTC) ← Big sell wall (resistance)
66,080 (5 BTC)
66,070 (2 BTC)
66,060 (1 BTC)
66,050 (0.5 BTC)
------------------------------- ------------
Current Price: 66,040 ← Last trade happened here
------------------------------- ------------
Buy Orders (Bids)
66,030 (3 BTC)
66,020 (7 BTC) ← Big buy wall (support)
66,010 (4 BTC)
66,000 (8 BTC)
65,990 (6 BTC)
Step-By-Step Explanation:
1. Current Price: The last trade happened at 66,040 USDT (the price at which someone agreed to sell and someone else agreed to buy).
2. Sell Side (Asks): These are people waiting to sell. The lowest price someone is willing to sell is 66,050 — this is the best ask.
3. Buy Side (Bids): These are people waiting to buy. The highest someone is willing to buy is 66,030 — this is the best bid.
4. Spread: Difference between best ask (66,050) and best bid (66,030) → spread is 20 USDT.
How a Scalper Reads This:
* A big wall at 66,100 (10 BTC) → strong resistance. Price may struggle to go up unless that wall gets eaten (filled).
* A big wall at 66,020 (7 BTC) → strong support. Price may bounce upward from here.
* If sudden big market buys hit and eat through 66,050, 66,060, etc., it signals buyers are aggressive → scalper can quickly enter long (buy).
* If sellers keep dumping into bids and price falls below 66,020, support is broken → scalper may go short (sell).
Bonus Visual Tip:
On real platforms like Binance or Bybit:
* Red bars = Sell walls (resistance)
* Green bars = Buy walls (support)
