By |Published On: April 17th, 2026|Categories: Research Insights|

Book Motivation

My friend, Valeriy, has produced some excellent trend following research articles over the years (much of which is on this blog!). Of course, trend-following isn’t new. Traders have been chasing trends for centuries, and moving averages are the workhorse tool behind it all. The basic idea is simple: markets are noisy, so smooth the data and try to extract the signal.

Sounds straightforward—until you realize there are hundreds of ways to do it. (we have an entire category of articles dedicated to this!)

Over time, we’ve seen an explosion of moving averages and trading rules. Each one claims to be faster, smoother, or somehow “better.” You’ll hear terms like zero-lag, super-smooth, or DSP-based thrown around as if they’re breakthroughs.

But here’s the problem: most of those claims don’t hold up under scrutiny.

The evidence is usually anecdotal. Maybe a nice-looking chart. Maybe a backtest with favorable assumptions (they always look good, right?). Rarely do we see a rigorous, apples-to-apples comparison grounded in data.

So we’re left with a fragmented field—lots of ideas, very little structure, and almost no consensus on what actually works.

This book is an attempt to fix that. The goal is simple: replace intuition, marketing, and hand-waving with a disciplined, quantitative framework. Instead of asking “which moving average looks best,” we ask a better question—what are the underlying trade-offs, and how do different methods actually stack up when you measure them properly?

What the book covers

The book combines two perspectives: 1) it is both a comprehensive guide to moving averages and 2) a new analytical framework for understanding them.

At the core is a simple idea that’s often overlooked: any trend-following rule should be judged on three dimensions:

  • Responsiveness (how quickly it reacts)
  • Smoothness (how much noise it filters out)
  • Accuracy (how well it actually tracks the underlying trend)

Most practitioners focus on the first two, often assuming that smoother means more accurate. That’s a mistake. Smoothness controls noise, but accuracy is about how closely you track the underlying trend—and the two do not always move together

This book builds quantitative measures for all three—and then uses them to compare methods on a level playing field.

Once you do that, a few things become clear:

  • Many “different” methods are just variations of the same underlying structure
  • Claims of “zero lag” or “super smooth” always come with trade-offs
  • There is no free lunch—every improvement in one dimension costs you in another

From there, the book shifts from analysis to design.

  • How do you build better rules?
  • How do you balance competing objectives?
  • What does “optimal” even mean in a real-world setting?

The book also tackles the messy reality of implementation—how trading costs matter, why backtests can mislead, and how market dynamics change the game.

In short, the book is not just a reference—it is an attempt to turn a largely intuitive field into a coherent, quantitative discipline.

I highly recommend you check it out. Here is the amazon link.

About the Author: Wesley Gray, PhD

After serving as a Captain in the United States Marine Corps, Dr. Gray earned an MBA and a PhD in finance from the University of Chicago where he studied under Nobel Prize Winner Eugene Fama. Next, Wes took an academic job in his wife’s hometown of Philadelphia and worked as a finance professor at Drexel University. Dr. Gray’s interest in bridging the research gap between academia and industry led him to found Alpha Architect, an asset management firm dedicated to an impact mission of empowering investors through education. He is a contributor to multiple industry publications and regularly speaks to professional investor groups across the country. Wes has published multiple academic papers and four books, including Embedded (Naval Institute Press, 2009), Quantitative Value (Wiley, 2012), DIY Financial Advisor (Wiley, 2015), and Quantitative Momentum (Wiley, 2016). Dr. Gray currently resides in Palmas Del Mar Puerto Rico with his wife and three children. He recently finished the Leadville 100 ultramarathon race and promises to make better life decisions in the future.

Important Disclosures

For informational and educational purposes only and should not be construed as specific investment, accounting, legal, or tax advice. Certain information is deemed to be reliable, but its accuracy and completeness cannot be guaranteed. Third party information may become outdated or otherwise superseded without notice.  Neither the Securities and Exchange Commission (SEC) nor any other federal or state agency has approved, determined the accuracy, or confirmed the adequacy of this article.

The views and opinions expressed herein are those of the author and do not necessarily reflect the views of Alpha Architect, its affiliates or its employees. Our full disclosures are available here. Definitions of common statistics used in our analysis are available here (towards the bottom).

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