Profiting from Short-Term Market Anomalies

Luiggi Trejo
3 min readSep 5, 2023
Photo by Alexander Mils on Unsplash

Statistical Arbitrage (Stat Arb) is a quantitative trading strategy that capitalizes on short-term mispricings or deviations from historical or statistical relationships between related assets. This approach involves identifying these mispricings and taking positions to profit from their eventual convergence. Here’s an expanded explanation along with key takeaways:

Statistical Arbitrage (Stat Arb)

Statistical arbitrage is a quantitative trading strategy that relies heavily on mathematical and statistical models. The core premise of stat arb is that over time, certain financial instruments or assets tend to exhibit relationships or correlations with each other. These relationships can be identified through historical data analysis and statistical methods.

Key Components of Stat Arb:

  • Pairs Trading: One common form of statistical arbitrage involves pairs trading. In this strategy, traders identify two related assets, such as two stocks from the same industry or a stock and its corresponding futures contract. They calculate historical price correlations between the two and monitor the spread (the price difference) between them. When the spread deviates significantly from its historical average, traders take positions to profit from its expected convergence.