In trading, especially in the context of market order flow and volume analysis, the term **"taker buyer"** refers to a **buyer who places a market order** (or any aggressive order) that **"takes" liquidity from the order book**.
### Here's a breakdown:
* **Taker**: Someone who removes liquidity from the market. This usually means placing a **market order**, which is executed immediately at the best available price.
* **Buyer**: A person who is buying the asset.
### So, a **taker buyer** is:
> A trader who submits a **buy market order**, which gets filled against the **existing sell limit orders** on the order book.
### In terms of **trade volume**:
* **Taker buy volume** = the volume of all trades where the buyer was the aggressor (i.e., initiated the trade).
* This is often used in analyzing **order flow** to understand who is more aggressive — buyers or sellers.
### Related terms:
* **Taker sell**: A trader who places a **sell market order** (selling aggressively).
* **Maker**: Someone who places a **limit order** and adds liquidity to the book.
### Example:
If the order book has a seller offering 1 BTC at \$30,000 and a buyer comes in with a market order to buy 1 BTC, the trade happens at \$30,000 and the **buyer is the taker** — thus this is counted as **taker buy volume**.
