Technical Analysis: An Asset Allocation Perspective on the Use of Moving Averages
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What they found
The authors asked why a rational investor might use a moving-average rule at all. In a model where stock returns are somewhat predictable but the investor is uncertain about the true parameters, they showed that combining a fixed allocation with a moving-average timing rule can improve expected utility, because the rule exploits predictability without requiring precise parameter estimates. Empirically, they found that adding a moving-average overlay to a buy-and-hold stock allocation improved results for U.S. indices, though the gains were modest and depended on the lookback.
What you can use
- Moving averages can be a sensible, robust way to exploit weak return predictability when you do not trust precise models.
- Use a moving average as a partial overlay on a core position rather than an all-or-nothing switch.
- The gains are modest; do not expect a moving-average rule to transform a portfolio.
Caveats
Theoretical model plus index-level empirical work; mathematically heavy. Results are gross of costs and sensitive to the chosen window.
Tags: technical-analysis, moving-average, asset-allocation, theory
Summaries are our own reading of the paper, not the authors' words. Educational only, not advice. Discuss it in Book Club.