The Algorithms Behind Market Movements
Mar 12, 2025

The financial markets are increasingly driven by algorithms—automated systems that execute trades at lightning speeds. These systems have a huge impact on everything from stock prices to crypto volatility, often in ways that aren’t immediately obvious. Understanding how these algorithms work is important, as they can alter the market faster than human instincts ever could.
Market-Making Bots
Liquidity is essential in any market, and market-making bots help ensure it. On centralized exchanges (CEXs), these bots stabilize the bid-ask spread to make trading smoother. In decentralized finance (DeFi), platforms like Uniswap use automated market makers (AMMs) and smart contracts to facilitate trades. These bots don’t just maintain liquidity—they adjust orders in real time based on market conditions. They also balance inventories and optimize prices. Knowing how they work is key to avoid slippage and improve trading. Subscribing to a crypto newsletter can help you stay updated on market trends and the role of such bots in shaping market movements.
Arbitrage Bots
Arbitrage has always been part of trading, but algorithmic trading has taken it further. Arbitrage bots scan multiple exchanges, finding price differences. They then execute trades in milliseconds to lock in small profits. They act faster than any human, so by the time you spot an arbitrage opportunity, the bots have already closed the gap and captured the profit.
There are three common strategies these bots use:
- Cross-Exchange Arbitrage: Buying at a lower price on one exchange and selling at a higher price on another. This strategy is effective due to price discrepancies across different platforms.
- Triangular Arbitrage: Exploiting price differences between three pairs on the same exchange, often by converting one asset into another, and then back again, all while taking advantage of the differing prices between pairs.
- Funding Rate Arbitrage: Holding opposite positions in spot and futures markets to profit from funding rate discrepancies. This strategy takes advantage of the difference between the interest rates of these two markets, capturing small, consistent profits.
Dark Pools & Hidden Liquidity
Institutional traders often use dark pools—private exchanges for large trades, hidden from the public to avoid slippage and price manipulation. While crypto lacks dark pools in the same form, similar strategies are in place. Over-the-counter (OTC) desks allow large transactions without impacting the market. Iceberg orders break trades into smaller parts to hide their full size.
You may not have direct access to these tools, but monitoring on-chain data, tracking large wallet movements, and watching exchange inflows and outflows can provide valuable insights.
When Algorithms Misfire
Algorithmic trading can make markets more efficient, but it also comes with risks. Flash crashes are often caused by algorithms acting in ways we don’t expect. A well-known example is the 2010 Flash Crash, where high-frequency trading bots triggered a sharp drop in the Dow Jones.
Similar problems have happened in crypto, like the collapse of LUNA, which was partly caused by automated systems that couldn’t handle the pressure. Even decentralized exchanges (DEXs) aren’t safe. Bots can manipulate slippage with sandwich attacks, profiting off traders who don’t realize what’s happening. Spotting these risks is key in volatile markets.
Machine Learning
Machine learning is becoming a big player in algorithmic trading. Unlike traditional bots, these ones don’t just follow set patterns—they process tons of real-time data and adjust their strategies quickly. They take into account past data, market sentiment, and trends to make decisions faster than humans.
To stay ahead, it’s important to understand how machine learning affects the market. Bots that use machine learning can adapt to changes more quickly, giving them an advantage over traditional methods. By using these tools, you can better predict price movements and fine-tune your strategies.
Impact of Market Sentiment
More and more algorithms are incorporating market sentiment into their decision-making. These bots analyze news, social media, and sentiment indicators to react not only to price changes but also to changes in overall market sentiment.
Understanding how sentiment drives algorithmic trading can give you a major advantage. Sentiment-based bots can cause speedy price changes when a certain narrative—like a news event or tweet—gains traction. By spotting these changes and reacting quickly, you can use opportunities as market sentiment changes.
Can You Outsmart the Bots?
With algorithms taking over much of the market, human traders need to adapt. Bots are faster and more accurate than humans, but by understanding how they work, you can use them to your advantage.
Watch Order Flow
Pay attention to buying and selling patterns that indicate bot activity. Order flow data can help you predict when bots are entering or exiting trades, giving you better entry and exit points.
Think Longer-Term
Focus on longer-term trends to avoid getting caught in short-term, bot-driven volatility. Bots often control the small price movements, so a broader perspective can help you avoid chasing temporary fluctuations.
Leverage DeFi Transparency
In DeFi, smart contracts are public, offering insights into bot strategies. Use this transparency to inform your decisions and gain an edge in an automated market.
The most successful traders are those who know how to work with the algorithms, turning them into valuable allies rather than obstacles.