What is AMM (Automated Market Maker)?
A smart contract algorithm that automatically sets token prices and enables trading without needing a traditional order book.
What is an AMM?
An Automated Market Maker (AMM) is a type of decentralized exchange protocol that uses a mathematical formula to price tokens and execute trades automatically, without needing a traditional order book (like on CoinDCX or Binance) where buyers and sellers are matched. AMMs are the backbone of DeFi trading on platforms like Uniswap, SushiSwap, and PancakeSwap.
How Traditional Exchanges Work vs AMMs
On a traditional exchange like Binance or the NSE stock market, trading requires an order book - a list of all the buy and sell orders at different prices. A trade only happens when a buyer's price matches a seller's price.
An AMM replaces this with a liquidity pool and a formula. The most common formula used by Uniswap is:
x * y = k
Where x and y are the quantities of the two tokens in the pool, and k is a constant. This formula automatically adjusts the price as the ratio of tokens in the pool changes with each trade.
A Simple Example
Imagine a pool with 100 ETH and 1,00,000 USDT (k = 10,000,000). ETH price = Rs 83,000 per ETH approximately. You buy 10 ETH from this pool. ETH supply drops to 90, and the formula requires USDT supply to rise to approximately 1,11,111. You paid about 11,111 USDT for 10 ETH - a slightly higher price per ETH than the starting price. This is the price impact of your trade.
Why AMMs Matter
- Always available - you can trade at 3 AM on a Sunday without counterparties.
- No KYC or account required - just connect a wallet and trade.
- Anyone can list a new token by creating a liquidity pool.
- Liquidity providers earn passive income from every trade in the pool.
Put your knowledge to work
SmartViewAI's AI portfolio tracker applies concepts like AMM (Automated Market Maker), TVL analysis, and risk scoring to your actual holdings. See your portfolio with fresh eyes.