Value & Momentum Strategies: Cross-Asset Class Analysis and Portfolio Benefits

The Power of Value and Momentum Strategies

Value and momentum strategies have been a point of fascination for financial economists due to their statistical significance and economic implications. These strategies refer to the tendency of value stocks (with high book or accounting values relative to market values) to outperform growth stocks (with low book-to-market ratios), and the tendency of stocks with high positive momentum (high 12-month past returns) to outperform those with low positive momentum.

That said, these phenomena have traditionally been studied in isolation and within a single asset class at a time. This article aims to broaden and extend this evidence by studying value and momentum across five major asset classes simultaneously: stock selection within four major countries, country equity index selection, government bond selection, currency selection, and commodity selection.

Value and Momentum Across Asset Classes

In a unified setting, value and momentum strategies have been found to generate excess returns in various asset classes. This evidence has been extended by including government bonds and considering value for currencies and commodities. For instance, during the period from 1926 to 2015, a portfolio of US small-cap value stocks generated an annualized return of 14.7%, compared to 9.9% for the Russell 3000 index.

However, it is important to note that these strategies are not without risks. Value and momentum strategies have been found to be negatively correlated within and across asset classes, implying that a portfolio consisting solely of value or momentum stocks may be subject to higher volatility. Liquidity risk is also positively related to value and negatively related to momentum, meaning that these strategies may become more risky during times of market stress.

Building a Diversified Portfolio

Despite the risks associated with value and momentum strategies, they can be powerful tools in building a diversified portfolio. By examining these phenomena simultaneously across markets and asset classes, investors can identify significant value and momentum exposures to liquidity and macro risks. This global and across-asset-class perspective adds significant statistical power, allowing for the documentation of the statistical and economic strength of these strategies when built as a globally diversified portfolio.

Additionally, the negative correlation between value and momentum strategies can be used to an advantage. A simple equal-weighted combination of the two has been found to produce a significantly higher Sharpe ratio than either strategy on its own.

Actionable Insights for Investors

Incorporating value and momentum strategies into a portfolio can help investors achieve their financial goals while managing risks. However, it is important to remember that these strategies are not without risks and should be used as part of a diversified investment approach. Here are some actionable insights for investors:

1. Consider incorporating value and momentum strategies into your portfolio to generate excess returns. 2. Be aware of the negative correlation between value and momentum strategies, and consider using an equal-weighted combination of the two to mitigate risks. 3. Monitor liquidity risk and macroeconomic factors when implementing value and momentum strategies. 4. Consider seeking professional advice from a financial advisor or investment manager to help you implement these strategies effectively.