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Avoid Losses: 5 Ways Investment Research Lies To You

By Todd Tresidder
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Discover How To Tell The Difference Between Valid And Invalid Research

Key Ideas

  1. Learn how to discern fact from fiction in investment research.
  2. Why it's critical to evaluate investment research on your own.
  3. Two tips to help you become a better lie detector.

Things are seldom as they appear…

Nowhere is this more true than with investment research. Every day another trading system or sure-fire way to riches gets published.

It always looks good on the surface – impressive statistics, testimonials, lots of social proof. You'll find them in best-selling books, published by an authority figure (like a professor), or endorsed by a trade journal.

None of that matters. It can't be trusted.

There's still a good chance it can be total hogwash so you must do your own due diligence.

Related: How Your Financial Advisor is Taking 75% of Your Retirement Income (or More!) Video, PDF download, or Audio.

You can't blindly invest your savings based on third party research no matter how legitimate it appears on the surface… unless you're willing to lose your money.

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Everyday, new investment strategies are published with "proof" that they're the next big thing. They're not always accurate. Here's how you sort fact from fiction to protect your portfolio.

How Investment Research Creates Fiction From Fact

Any time humans interact with data there's opportunity for error. Below are the 5 most common ways problems occur…

  1. Data Errors: Investment research requires data sampling to keep the project from becoming unwieldy. Unfortunately, sampling introduces bias – by definition. Do you exclude or include companies that have gone out of business (survivorship bias)? What time periods do you test (cyclical bias)? Big cap, small cap, or micro-cap? End of day data, intra-day, weekly, or monthly? Every decision will affect the results – some quite dramatically. Just because an investment strategy appears to work on one time period doesn't imply it will work on another time period… or even in the future (which is the only time period that matters).
  2. Undisclosed Assumptions: How are transaction costs accounted for? Did the system assume reasonable fills during the 2008-09 decline or the 1987 crash? What are the assumptions for the bid/ask spread? Commissions? Depending on trading frequency, these small details can completely invalidate an otherwise stellar investment strategy.
  3. Judgment vs. Mathematical Rigor: Beware of any “research” that allows room for interpretation, vagary, or judgment. The human mind can and will deceive (both in love and investment research). If the study isn't mathematically rigorous, then skip it. It's either quantified or it's fiction.

Related: The science of investment strategy – simplified!

  1. Interpretive Bias: Marketers use statistics like a drunkard uses a light pole – for support instead of illumination. You can't understand a person's opinion until you know the shoes they stand in. What are they selling? Did they build a business around this research? Who paid for the research? Do they have an axe to grind? All these things can pervert the science of statistics into supporting biased opinion and business expediency. Always analyze the source of the research and their financial motivations.
  2. Algorithmic Errors: Some researchers simply screw up. They publish results that include blatant algorithmic or data errors. Seriously, it happens with surprising frequency. Worse yet, the flawed conclusions then get repeated throughout the blogosphere. This creates social proof and authority, making the work appear indisputable.

The Devil Is In The Details

These concerns may sound like a bunch of financial geek details reserved for propeller-heads with thick glasses and pens in their pockets… but it's not.

See My Related Book…

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These concepts can make or break your financial future. They're critically important.

Think about it – you must base your investment decisions on something. If the logic and research behind those decisions is flawed, then the outcome will likely be expensive.

The issues discussed above aren't reserved for data freaks: they're relevant to every investor… including you.

The essence of investing is to only put your assets at risk for a positive mathematical expectation. Anything less is gambling.

The only way you can know if your investment strategy provides a positive mathematical expectation is solid research. Period.

If I'm sounding like a curmudgeon, please understand this is based on decades of my own research and the digesting of other professional's research.

The process is far more tenuous than anyone who hasn't personally dug deep into this subject can be expected to understand.

I spent a decade of my life verifying and testing published trading systems for a hedge fund.

Surprisingly, almost none of them worked as published. Seriously!

Related: Better investing through process, not product

The models were riddled with flawed assumptions and data issues that made them unusable for real-time investing.

Many published trading systems out there don't produce the results you're led to believe they do
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Granted, I did this research a decade ago, so you could argue the market is more sophisticated now… but I doubt it.

See this post by Alpha Architect on The Magic Formula for evidence. If you think this is an isolated circumstance, then remember the infamous “Beardstown Ladies” fraud and how their published track record was complete nonsense.

These are best-selling books by major publishing houses offering questionable research conclusions.

I know it shouldn't be this way, and you should be able to trust what you see in writing, but that's not the way the game works. Sorry.

It all boils down to a simple equation – small errors in investment research compound into HUGE errors in results. It is the nature of compound returns. The equation is multiplicative – both for growing wealth and compounding errors in research.

The devil is in the details.

2 Ways To Solve The Problem

So what's an investor to do? How can you determine what investment strategies are sufficiently trustworthy to justify putting capital at risk?

  1. Verify the research yourself: Yes, it's a lot of work and probably not a viable solution for most, but it's an acceptable alternative if you have a passion for this subject.
  2. Find independent, third-party verification: If you won't verify it yourself then you'll have to find someone else who did. Fortunately, with the growth of the internet, this is frequently a viable alternative. Third party bloggers and competing authors often corroborate claims.

That's it! Those are the only two ways to resolve the issue. Either verify the research yourself or find someone else who did.

Either way, it must be verified and deeply understood before putting capital at risk. Anything less is gambling.

In addition, I like to see two more pieces of evidence before putting capital at risk on investment research…

  1. Real-time track record: I prefer the track record be independently audited and to include data periods that represent adverse conditions for the investment strategy. For example, if it's a trend-following strategy, I like to see how the strategy managed risk during sideways markets. This is critically important.
  2. Market logic: I avoid any investment approach rooted in data-mining instead of market logic. In other words, the math should quantify an exploitable inefficiency in market price behavior and not just be a statistical aberration of the data.

I understand this is all a painful inconvenience. Investing should be easier and you should be able to trust published research. Unfortunately, historical fact disagrees.

Learn how to become a better lie detector when analyzing investment research
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The reality is money is hard to save and easy to lose. It may take extra effort to complete proper due diligence, but I guarantee it will be far less effort than having to replace investment losses from earned income.

So what do you think? Maybe you can cite some more examples of bogus research in the comments below? What ideas did I miss and what thoughts would you like to add? Please tell me your thoughts…

Investment Losses Suck!

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Comments

  1. Avatarifiok Akpabio

    thanks for your information so far pls be my mentor.

  2. AvatarRobinson Mertilus

    Thanks for the post. It certainly provides the necessary transparency as to how things sometimes work in investment research. What is your favorite place to research your investments?

    • AvatarTodd Tresidder

      @Robinson – Thanks for stopping by. I don’t have one specific place for research.

This article’s comments are closed.

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