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The 4 biggest investment performance myths -- and how they can torpedo advisor-client trust

How to sidestep Wall Street mythology and give clients a clarified perspective on the ups and downs of their investments

Author Guest Columnist Rob Isbitts July 2, 2012 at 4:24 PM
3 Comments
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Rob Isbitts: Past performance guarantees one thing: That you cannot have that past performance.

Rob Isbitts


Kenneth B. Kann

Kenneth B. Kann

July 2, 2012 — 5:47 PM

Very well put. I’ve often tried to get clients and prospects to better understand reported performance meausures relative to specific (vs generalized) time frames.

Robert Boslego

Robert Boslego

July 6, 2012 — 7:04 PM

I like your approach about explaining these concepts in easy-to-understand language and the idea of discussing risk comfort levels. Volatility is abstract, so I suggest asking investors for maximum loss, as measured from peak-to-valley percentage, as the main risk tolerance question.

You conclude that MPT is not invalid. If you take the definition of valid being “producing the desired result” or “effective,” there are many reasons it’s not effective for most, if not all practitioners, beginning with the fact that the inputs to the model are unstable and cannot be predicted with much confidence, and so that alone renders the outputs unreliable.

John Mayer

John Mayer

June 14, 2017 — 2:34 AM
haha, this is true. A lot of basic math is required for learning financial management. I have to look at slope-intercept to finish this article :) <a href="https://www.studypug.com/algebra-help/linear-functions/linear-function-slope-intercept-form" rel="nofollow">https://www.studypug.com/algebra-help/linear-functions/linear-function-slope-intercept-form</a> that being said - author is right. you just need to understand the basic math and the theory behind it to be an effective investor.

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Mentioned in this article:

Morningstar, Inc.
TAMP
Top Executive: Joe Mansueto



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