Authors: Carlo Zarattini, Gary Antonacci

A Century of Profitable Industry Trends research paper on industry rotation and trend-following strategies
Research paper examining long-term industry trend-following strategies across U.S. sectors.

Industry Trend-Following Strategy

An industry trend-following strategy seeks to capture persistent trends across different sectors of the economy. Instead of focusing on individual stocks, this approach allocates capital to industry portfolios that exhibit strong momentum.

This paper examines whether trend-following strategies applied to industries can generate long-term excess returns.

Dataset and Research Scope

To evaluate the effectiveness of industry trend-following, we analyze a dataset containing 48 U.S. industry portfolios covering the period from 1926 to 2024.

This century-long dataset allows us to test whether industry rotation strategies remain profitable across different economic regimes, market crises, and structural changes in financial markets.

Performance of the Industry Timing Strategy

The Timing Industry strategy demonstrates strong long-term performance. Over the full sample period, the strategy produces:

• 18.5% average annual return
• 12.1% annual volatility
• Sharpe ratio of 1.46

For comparison, the U.S. equity market delivers an average return of 9.7%, with 17.1% volatility and a Sharpe ratio of 0.63.

The strategy also achieves an annualized alpha of 11.2%, highlighting its ability to outperform the broad market.

Risk Management and Drawdown Reduction

One of the key benefits of the strategy is its ability to manage downside risk.

By dynamically adjusting exposure to industries, the strategy significantly reduces drawdowns. In our tests, the timing approach lowers maximum drawdowns by almost 60% compared with passive long exposure.

At the same time, the model participates fully during major market uptrends.

Industry Rotation with Sector ETFs

In the final section of the study, we test the same industry rotation strategy using 31 sector ETFs provided by State Street Global Advisors.

The ETF-based implementation successfully replicates the exposure and return profile of the original industry portfolio strategy over the last 20 years.

Impact of Trading Costs

To evaluate real-world feasibility, we incorporate commissions and slippage into the backtest.

Even under relatively high trading cost assumptions, the industry trend-following strategy remains profitable, confirming its robustness.

Key Takeaways

Full Research Paper (Recommended)

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