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Arbitrage Trading in DeFi

November 30, 2023

Nowadays, traders in the DeFi space can enjoy a wide range of arbitrage opportunities fueled by the growing popularity of decentralized finance products and services. DeFi trading offers several key advantages, including enhanced privacy and security, lower fees, access to flash loans, and — perhaps most importantly — full control over private keys throughout the trading process. This last point is crucial to many crypto enthusiasts who value decentralization.

Crypto arbitrage strategies can take various forms, some unique to the DeFi ecosystem, while others are more broadly applicable. In this article, let's explore several of these strategies, the usefulness of flash loans, and the potential risks involved.

Arbitrage Types

Cross-exchange Arbitrage

One of the main strategies used in arbitrage trading is cross-exchange arbitrage, which involves a trader purchasing cryptocurrency on one exchange and selling it on another in an attempt to earn a profit. This type of trading can be further divided into subtypes. 

One subtype is spatial or cross-border trading, where traders take advantage of differences in demand and supply of particular crypto assets in different regions or counties. Another subtype is arbitrage between DEXes and CEXes, which use different models of calculating the rates of assets and inadvertently create profit opportunities for traders. 

Triangular Arbitrage

Triangular arbitrage is a trading strategy that exploits pricing inefficiencies between three crypto assets, whether using multiple exchanges or a single one. It is important to note that triangular arbitrage between assets A, B, and C is only possible when the amount received after swapping each pair in succession is greater than that obtained after swapping asset A to asset C. So, traders must correctly calculate their potential profits before making any decisions. Since identifying such profit opportunities can be challenging, many traders use the help of trading bots or similar tools. 

Statistical Arbitrage

This method involves using a combination of econometric, statistical, and computational techniques to carry out arbitrage trades on a large scale. Traders employing this method depend on mathematical models and trading bots to execute high-frequency arbitrage trades and maximize profits.

Cross-domain Arbitrage

Cross-domain arbitrage is currently one of the most popular types of arbitrage. This type is closely connected to the concept of MEV and involves the manipulation of the order of transaction validation by traders who work as validators to maximize their profits when trading across different domains. These domains could include blockchains, Layer-2 networks, side-chains, centralized exchanges, and more. 

The Use of Flash Loans

Any trader can purchase a token from one exchange and sell it on another, thus making a profit. However, as price differences are often tiny, the profit largely depends on the trading volume. Not every trader has thousands of dollars readily available; this is where flash loans can come in handy. They enable traders to take advantage of a good profit opportunity even without having significant funds.

Flash loans let a user borrow assets with no upfront collateral as long as the borrowed assets are paid back within the same blockchain transaction. Such loans offer many possibilities to traders engaged in arbitrage, yet they have one major downside: technical complexity. Flash loans can be quite challenging to execute since they require advanced technical knowledge that is often beyond the scope of regular traders. Furthermore, automated arbitrage bots have dominated the flash loan market, making it even more difficult for not-advanced traders to find profitable opportunities.

Arbitrage-related Risks

Arbitrage trading is not risk-free since certain factors could diminish a trader's chances of generating profit or lead to significant losses. 

Firstly, it is important to remember that when engaging in arbitrage trading across two exchanges, the trader may incur withdrawal, deposit, and trading fees. These fees can accumulate and reduce profits. To reduce the risk of losses due to high fees, traders can limit their activities to exchanges with reasonable fees. They can also deposit funds on multiple exchanges to increase their chances of taking profit opportunities without paying extra fees. In such cases, traders only need to consider trading fees, which are relatively low for those executing high volumes of trades.

The next factor traders should remember is time. Crypto arbitrage trading is time-sensitive. The price disparity tends to disappear as more traders capitalize on a particular arbitrage opportunity. Besides, your trading can be held by problems with blockchain transaction speed and AML (Anti-Money Laundering) checks by centralized exchanges.

Thirdly, it is essential for traders who use arbitrage bots to avoid becoming too dependent on the software. Learning about arbitrage bots and the technologies involved beforehand is recommended to ensure you understand all the risks and can control the process. Moreover, all traders should utilize appropriate risk management strategies to minimize their exposure to potential losses. 

Despite its potential risks, arbitrage trading is considered one of the safest trading practices. First of all, it does not typically require predictive analysis, which is one of the main risk factors in trading. Additionally, the trades executed by arbitrage traders generally only last for a few minutes, significantly reducing the exposure to trading risk.

Final Thoughts

A thorough understanding of the market is essential for success in arbitrage trading. This involves meticulously analyzing market conditions, identifying potential opportunities, executing trades at the right moments, and acquiring enough knowledge to effectively operate trading bots. Additionally, staying updated with the latest developments in the DeFi space can provide valuable insights into emerging arbitrage opportunities.

Currently, much of the arbitrage activity centers around Miner Extractable Value (MEV), which has turned trading into a gas war within the Ethereum ecosystem. There is a pressing need for tools that facilitate cross-domain arbitrage, helping traders navigate this new, competitive landscape and capitalize on numerous available opportunities.