This high degree of correlation, suggesting that one stock will always (eventually) catch up with the other, is at the heart of a strategy called pairs trading. One way to implement this is using an Alpha Extension strategy, also known as a long/short extension. This approach is designed to amplify active returns by combining a traditional long-only portfolio with a short-selling overlay. For example, if stock A and stock B usually move together, but stock A suddenly spikes while stock B remains stable, traders assume stock A is overbought and stock B is undervalued. They will short stock A and go long on stock B, expecting the price gap to close.
- You should consider whether you understand how CFDs work, and whether you can afford to take the high risk of losing your money.
- Imagine two stocks—ABC and XYZ—that usually move together by a comparable amount.
- The goal is to profit from temporary price differences between the two assets rather than predicting the overall market direction.
- They will short stock A and go long on stock B, expecting the price gap to close.
What Is Pairs Trading? Strategy, Benefits, and Risks
Antonio Di Giacomo studied at the Bessières School of Accounting in Paris, France, as well as at the Instituto Tecnológico Autónomo de México (ITAM). He has experience in technical analysis of financial markets, focusing on price action and fundamental analysis. After many years in the financial markets, he now prefers to share his knowledge with future traders and explain this excellent business to them.
Market Neutrality
However, correlations can break down due to fundamental shifts, economic events, or industry changes, making the trade invalid. In a nutshell, pairs trading works by betting that 2 or more securities will diverge or converge in price. The trader bets that a $50 stock and a $55 stock, for instance, will either have a larger or smaller spread ($5 in this case) when the trade is closed. Divergence traders will like to see the spread increase while convergence traders will prefer to see the spread decrease. It’s worth noting, however, that it took three months for this trade to come to fruition.
The Cola Wars rivalry between Coca-Cola (KO) and PepsiCo (PEP) is a classic example of two similar companies that are locked in a perpetual battle over the same customers. Imagine two stocks—ABC and XYZ—that usually move together by a comparable amount.
The longer we can see the correlation has persisted, the stronger our confidence might be in the relationship. If we dig further back into the data, we find that the correlation between their share prices over five years, from January 2018 to January 2023, is even stronger at 0.91. For the purposes of this example, we will use the correlation coefficient as calculated by spreadsheets such as Microsoft Excel and Google Sheets — mainly because it is relatively simple. Note there are many ways to calculate the relationship between two data sets and more complicated measures may work better in practice. After a selection process has been defined, a trader must use that process to generate a list of candidate trades.
Identifying the Right Pair of Assets
Whether you’re a novice trader or an experienced professional, understanding the nuances of pairs trading and applying the right strategies can enhance your trading portfolio. As with any trading strategy, thorough research, continuous learning, and adaptation to changing market conditions are key to achieving long-term success in pairs trading. Diversifying pairs trades across different asset classes or sectors can reduce the overall risk. By holding multiple pairs trades with varying correlations, traders can ensure that their portfolio is not overly exposed to any single asset or market condition. The strategy was popularized in the 1980s by quantitative hedge funds, and its ability to remain market-neutral while profiting from price movements of individual assets made it an attractive choice for many professional traders. Today, pairs trading is applied across various asset classes, including equities, forex, commodities, and more.
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Instead of trading a single currency pair directionally, traders go long on one pair and short on another to profit from their relative price movements. When a pairs trade goes as planned, the investor profits and can reduce potential losses. Profits are generated when the underperforming security regains value, and the outperforming security’s price deflates.
Stop Losses and Take Profits
- Generally speaking, the short side of a trade should be executed and filled before the long order is placed.
- Sarah brings a unique approach by combining creativity with clarity, transforming complex concepts into content that’s easy to grasp.
- It is possible this might exceed your trading profit, so you also need to keep a close eye on this aspect.
- Statistical arbitrage is a quantitative trading strategy that relies on statistical and mathematical models to identify short-term mispricings across multiple assets.
Since one position is long and the other is short, profits depend on the relative performance of the two assets rather than the market’s direction. While this would seem to be the most straightforward step in the investment process, there are a few subtleties. Generally speaking, the short side of a trade should be executed and filled before the long order is placed. In addition to the option of manually entering trades, there are some trading programs designed to handle pairs execution. These programs are designed to simultaneously work each side for the trader, particularly for larger orders, in an attempt to hit a pre-specified price ratio.
For example, consider two companies in the same industry, like Coca-Cola (KO) and Pepsi (PEP). Historically, their stock prices tend to move similarly because they operate in the same sector, face similar market conditions, and compete for the same customers. Yes, but it requires a solid understanding of correlations, statistical analysis, and risk management. Beginners should start with demo accounts and backtesting before trading with real capital.
Picking correlated instruments
By focusing on relative value rather than absolute direction, pairs trades help amplify alpha, improve portfolio diversification, and reduce exposure to macro-driven volatility. Unlike directional trades, pairs trading is market-neutral, meaning it seeks to generate returns regardless of whether the broader market rises or falls. This makes it particularly valuable in volatile or uncertain environments or by allowing Cryptocurrency trading for beginners the portfolio manager to add alpha when the market is directionless, volatile or even falling.
To implement a cointegration-based strategy, traders typically use tests like the Engle-Granger two-step method or the Johansen test to identify cointegrated pairs. Cultural shifts and management changes at Woolworths have weighed on performance, while Coles strengthened its market share. Over the past 12 months, Woolworths has ceded earnings momentum and market premium to Coles. This pair trade generated an impressive 30% return, underscoring the power of relative positioning. Because traders hold both a long and a short position, broad market fluctuations have a smaller impact compared to trading a single asset.
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We do not provide financial advice, offer or make solicitation of any investments. Trading and investing in financial instruments comes with a high degree of risk and you can lose money. You should only engage in any such activity only if you are fully aware of the relevant risks. For example, if two stocks are historically correlated and one stock drops significantly while the other rises, a trader might expect the prices to revert to their normal relationship. The entry point would be when the spread reaches a point that is significantly wider than usual.
At its heart, it is focused on adding value through relative performance rather than absolute performance by attempting to reduce (often cancel out), shared factor risk. It involves identifying two historically correlated stocks – often within the same sector – and taking opposing positions when their outlook and prices are expected to diverge. The goal is to profit from the relative movement between the two, assuming the spread will eventually revert to its historical mean. Pairs trading is also widely used in the forex market, where traders take advantage of price differences between two highly correlated currency pairs.
The other option is to initiate a trailing stop loss level to lock in at least a portion of the profit. The trader will develop a feel for which of these options more suits their particular style, and may make different decisions for different pairs at different times. Pairs work is based on a correlation between 2 (or more) stocks, sectors, indexes, or other financial instruments. Generally, the service road follows the highway closely but terrain or development will sometimes cause the 2 to diverge. The area between the highway and the service road can be thought of as the spread—the measured distance between the 2 objects traveling together. The pairs trader attempts to measure the spread with statistics in an effort to find a tradable relationship of inequality opportunities.
