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Home»BLOCKCHAIN NEWS»Uniswap (UNI) and Automated Market Making: A Comprehensive Primer
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Uniswap (UNI) and Automated Market Making: A Comprehensive Primer

By Crypto FlexsJune 1, 20244 Mins Read
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Uniswap (UNI) and Automated Market Making: A Comprehensive Primer
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Decentralized Exchange DEXes, such as Uniswap (UNI), serve as an important component within the crypto-financial system. According to Glassnode Insights, these platforms allow users to trade cryptocurrencies directly with each other or through liquidity pools, eliminating the need for a counterparty or centralized entity to execute the trades.

Unauthorized trading

Uniswap is the largest DEX protocol known for its permissionless access and user-friendly interface. Users maintain control over their funds and trade through liquidity pools that contain assets from both sides of the trading pair. Additionally, anyone can create or participate in a trading pool for any token pair, making DEXs attractive for trading a variety of digital assets.

The main pros and cons with DEX are: scalability Latency and transaction fees are higher. In contrast, centralized exchanges offer faster transaction execution without blockchain transaction fees, but require users to move their assets under the custody of the exchange operator.

Decentralized Market Creation

Uniswap has introduced a pivotal innovation through its Automated Market Maker (AMM) design. This setup facilitates the creation of a liquidity pool and adjusts the token price based on the relative liquidity balance on both sides of the transaction. On traditional exchanges, market makers provide liquidity by placing buy and sell orders to create a deeper order book. In contrast, DEXs use smart contracts to replace this order book model with a liquidity pool whose price is determined according to the AMM design.

Each pool contains reserves for a specific token pair. For example, the WETH-USDC pool contains reserves of both WETH and USDC, often deposited in a 50:50 split based on the price of each side. The AMM design allows anyone to become a market maker by depositing tokens into a pool. In return, liquidity providers (LPs) receive a fee from pool trades, which is a small percentage of the trade value distributed proportionally according to their share of the pool.

Price determination through constant product formula

The liquidity pool utilizes the AMM algorithm to manage token prices and maintain liquidity balance within the pool after trading. Each time a trade occurs, the algorithm adjusts the quantity of tokens in the pool and recalculates the price of each token based on the remaining quantity using a constant product formula.

x * y = k

  • x is the token quantity in liquidity pool a.
  • y is the token quantity in liquidity pool b.
  • k is a constant

The product of the two token quantities remains constant after the transaction. When someone uses Token A to purchase Token B, the sale amount of Token A is added and the amount of Token B purchased is removed from the pool. This process keeps product k constant as the token quantity changes with each transaction. The exchange rate is determined by the ratio of the change in x and the change in y.

Additionally, arbitrage opportunities help keep token prices in line with other trading venues. If a DEX liquidity pool offers tokens at a significant discount compared to a centralized exchange, traders can purchase tokens through the DEX and sell them on the exchange to capture the spread.

concentrated liquidity

Previous AMMs typically used a 50:50 asset split with liquidity spread across the entire possible price range for each token. Uniswap V3 introduced the concept of concentrated liquidity, allowing liquidity to be applied within a specified price range. These ranges are defined as individual points on a given price scale, and fees are only incurred when the market trades within this range.

This design improves the user experience for DEX traders by providing tighter spreads. It also provides more opportunities for liquidity providers to actively manage their positions and improves the capital efficiency of the pool. This allows market makers to gain insight into price and volatility expectations while adjusting their liquidity positions.

fee level

Uniswap’s fee earning mechanism attracts liquidity through different fee tiers: 0.01%, 0.05%, 0.30%, and 1.00%. These tiers accommodate different levels of risk and trading volume. The lowest fee tier (0.01%) is suitable for pools associated with stablecoins or assets with minimal price volatility, encouraging high volume, low margin trading. Higher fee tiers compensate LPs for asset inventory risk, increased potential for impermanent losses, and lower expected trading volume.

Summary and Conclusion

Uniswap pioneered new crypto-finance fundamentals such as the AMM protocol and enabled permissionless transactions through blockchain. These DEX protocols align incentives so market makers have a fee revenue incentive to provide liquidity, and traders have access to global trade execution without giving up money management.

While this article covers many of the key design elements of DEXs, the ecosystem continues to push the boundaries of what is possible in a decentralized future.

Image source: Shutterstock

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