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The Most Important Thing MP3 CD – Unabridged, March 8, 2016
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Howard Marks, the chairman and cofounder of Oaktree Capital Management, is renowned for his insightful assessments of market opportunity and risk. After four decades spent ascending to the top of the investment management profession, he is today sought out by the world's leading value investors, and his client memos brim with insightful commentary and a time-tested, fundamental philosophy. Now for the first time, all listeners can benefit from Marks's wisdom, concentrated into a single volume that speaks to both the amateur and seasoned investor.
Informed by a lifetime of experience and study, The Most Important Thing explains the keys to successful investment and the pitfalls that can destroy capital or ruin a career. Using passages from his memos to illustrate his ideas, Marks teaches by example, detailing the development of an investment philosophy that fully acknowledges the complexities of investing and the perils of the financial world. Brilliantly applying insight to today's volatile markets, Marks offers a volume that is part memoir, part creed, with a number of broad takeaways. Marks expounds on such concepts as "second-level thinking," the price/value relationship, patient opportunism, and defensive investing. Frankly and honestly assessing his own decisions—and occasional missteps—he provides valuable lessons for critical thinking, risk assessment, and investment strategy.
Encouraging investors to be "contrarian," Marks wisely judges market cycles and achieves returns through aggressive yet measured action. Which element is the most essential? Successful investing requires thoughtful attention to many separate aspects, and each of Marks's subjects proves to be the most important thing.
- LanguageEnglish
- PublisherAudible Studios on Brilliance Audio
- Publication dateMarch 8, 2016
- Dimensions6.75 x 5.5 x 0.5 inches
- ISBN-10151138347X
- ISBN-13978-1511383479
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Product details
- Publisher : Audible Studios on Brilliance Audio; Unabridged edition (March 8, 2016)
- Language : English
- ISBN-10 : 151138347X
- ISBN-13 : 978-1511383479
- Item Weight : 3.5 ounces
- Dimensions : 6.75 x 5.5 x 0.5 inches
- Best Sellers Rank: #2,048,625 in Books (See Top 100 in Books)
- #3,364 in Business Decision Making
- #4,522 in Introduction to Investing
- #4,568 in Decision-Making & Problem Solving
- Customer Reviews:
About the author

Howard Marks is chairman and cofounder of Oaktree Capital Management, a
Los Angeles-based investment firm with $80 billion under management. He
holds a Bachelor's Degree in finance from the Wharton School and an MBA
in accounting and marketing from the University of Chicago.
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Reviewed in the United States on March 1, 2021
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Top reviews from the United States
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This new book expands upon the ideas he covered in that original memo. Topics that are covered include: market efficiency, value, risk, investment cycles, contrarianism, finding bargains, patient opportunism, circle of competence, luck, avoiding pitfalls, etc... In short all the topics that a focus investor needs to understand and be able to place, and use, in their own mental models.
What does Mr. Marks want his readers to gain from his book? Here are his own words from the introduction of the book:
"I didn't set out to write a manual for investing. Rather, this book is a statement of my own investment philosophy. I consider it my creed, and in the course of my investment career it has served like a religion. These are the things I believe in, the guideposts that keep me on track. The messages I deliver are the ones I consider the most lasting. I'm confident their relevance will extend beyond today.
You won't find a how-to book here. There's no surefire recipe for investment success. No step-by-step instructions. No valuation formulas containing mathematical constants or fixed ratios - in fact, very few numbers. Just a way to think that might help you make good decisions and, perhaps more important, avoid the pitfalls that ensnare so many.
It's not my goal to simplify investing. In fact, the thing I most want to make clear is just how complex it is. Those who try to simplify investing do their audience a great disservice. I'm going to stick to general thoughts on return, risk and process..."
Mr. Marks has succeeded in his goals in a brilliant manner. There is, quite simply, an incredible amount of wisdom between the covers of his book and an investor is doing them a disservice if they don't read, and re-read, this book. I will be placing it on my shelf right next to the great investments classics of Security Analysis, The Intelligent Investor, the Berkshire Hathaway annual reports, and Margin of Safety. Quite simply I can't recommend it highly enough.
My only knock is that (as other reviews also mention) because the book is a compendium of quotes from Marks's excellent Oaktree Memos, it can at times read as somewhat disjointed or repetitive. Still well worth the read!
I set out reading the thing, and even took notes. However, I soon realized that what I was reading wasn't worth noting down. I am writing this to provide fair warning to experienced readers, in full knowledge that this runs counter to the personal endorsements of Buffett and co. So I will be as specific as I can in my criticisms, and by all means buy it if you think I'm way off point. Caveat emptor.
First, the organization isn't great. Marks chooses to simply reprint a lot of his past stuff. This results in the book not being as crisp as it could be. I am not talking about a "magic formula for investing" in equations or sentences, which he explicitly says he is not providing and anyway I am not seeking. I am just asking for the basic, minimally repetitive, coherent flow of thought any investment author ought to provide to his readers in a single book.
Second, he even sort of tricks you in the title. I don't think you'll mind me spoiling this for you because it is so... lame: There is No One Important Thing. In fact, there are 18. And oh, yeah, a lot of them are minor variations of each other (Chapter 2 is on Understanding Market Efficiency. Chapter 19 is on Adding Value. You Add Value where Markets are Inefficient. wow!) Therefore the book, while short, is also much too long - Marks' entire philosophy is succinctly stated within Chapter 20 alone. I do not find anything that is said in any other chapter that is not better said in Chapter 20, except for the one new jargon that he coins, "second level thinking" (which is code for not being an idiot - "first level thinker" being a strawman hypothetical typical investor who invests like a headless chicken). In turn, this entire philosophy can be found in the eponymous memo that spawned all this verbiage: [...]
Further, experienced readers of investment books like myself will not find a lot new here. There is the obligatory anecdote about the prof walking away from the $10 bill lying on the ground. There is the distinction between an informational and an analytical edge, and the need for that over the rest of the market. There are -way- too many pithy quotes about the importance and difficulty of being contrarian. None of this is new, in fact it is the convention among investment authors, ironic for someone who stresses unconventional thinking. (Perhaps what is unconventional is that he actually practices these things. But if you're smart enough to get that, you don't need this book as anything more than a paperweight or conversation starter.)
I have found that the best way to describe this book is that "it must have been co-written by Captain Obvious". I have one final example for you if you remain on the fence about whether to buy the book. In chapter 19 he introduces the reader to the concepts of alpha and beta (yes, this book really is that introductory) and states his belief that alpha is not zero. The key to achieving nonzero alpha is apparently "superior insight". I have now entirely spoiled chapter 19 for you - it gets no more insightful than that. Ditto the rest of the book, this chapter was just the most fresh in my memory.
I'm sorry, but NOTHING in this book will tell the experienced investment reader anything he doesn't already know. By all means buy it if you still respect the guy anyway, I sure did. But absolutely do not buy if you (again, speaking only to the experienced reader) expect to gain anything new from it.
(5/5/11 - original review edited for errata and writing style - didn't feel the original review reflected what i wanted to say as it was written hastily and late-at-night.)
Top reviews from other countries

The book addresses topics like market psychology (go against the crowd at extreme ends of investor psychology), the asymmetrical relationship between gains vs losses (you need a 100% gain to recover from a 50% loss), estimates, economical cycles, behaviour, risk management. And the differences between loser's game and winner's game, or the difference between offense and defence.
The book is more a collection of market comments and thoughts from his frequent letters and a memoir of his career. Each chapter is fairly brief and informative, although my thoughts drifted away with a certain frequency in the first half of the book. All in all it is a decent recap but not overly revealing. If you fail to realise you need to take risk, be contrarian and that you need come up with unique ideas to generate excess performance as an investor you would have been ramping up losses or been out of business soon.
As an style-agnostic active equity fund manager of a fairly sizeable pool of AuM I didn’t always agree with the author’s arguments as a value investor. But it was helpful to see some basic principles phrased. And I developed more sympathy towards the end of the book, but more so because it's there that the author alludes more to core principles that I and my team have stuck to for the past few decades. But there wasn't anything new or that we haven't brought in practice. As such it's more an instruction for new or retail investors about how successful asset mangers think, act and operate. But then you wonder what they would do with the concept of ‘alpha’ or where they would get their unique insight or ‘second level of understanding’ to make proper investment decisions.. Also all these concepts are helpful and meaningful but don't expect to learn 'how' to invest i.e. there is nothing about the what the author calls the 'micro approach' the selection and actual analysis of assets and investments, while he repeatedly tresses that such fundamental research and analysis is key to successful investment returns.


Reviewed in the United Kingdom 🇬🇧 on March 29, 2019
The book addresses topics like market psychology (go against the crowd at extreme ends of investor psychology), the asymmetrical relationship between gains vs losses (you need a 100% gain to recover from a 50% loss), estimates, economical cycles, behaviour, risk management. And the differences between loser's game and winner's game, or the difference between offense and defence.
The book is more a collection of market comments and thoughts from his frequent letters and a memoir of his career. Each chapter is fairly brief and informative, although my thoughts drifted away with a certain frequency in the first half of the book. All in all it is a decent recap but not overly revealing. If you fail to realise you need to take risk, be contrarian and that you need come up with unique ideas to generate excess performance as an investor you would have been ramping up losses or been out of business soon.
As an style-agnostic active equity fund manager of a fairly sizeable pool of AuM I didn’t always agree with the author’s arguments as a value investor. But it was helpful to see some basic principles phrased. And I developed more sympathy towards the end of the book, but more so because it's there that the author alludes more to core principles that I and my team have stuck to for the past few decades. But there wasn't anything new or that we haven't brought in practice. As such it's more an instruction for new or retail investors about how successful asset mangers think, act and operate. But then you wonder what they would do with the concept of ‘alpha’ or where they would get their unique insight or ‘second level of understanding’ to make proper investment decisions.. Also all these concepts are helpful and meaningful but don't expect to learn 'how' to invest i.e. there is nothing about the what the author calls the 'micro approach' the selection and actual analysis of assets and investments, while he repeatedly tresses that such fundamental research and analysis is key to successful investment returns.



1. Efficient Market Hypothesis is not completely accurate in certain situations
2. This is because as humans we deal not only with information but also with emotions / psychology
3. Therefore, we need to focus on those assets where there might be divergence from the Efficient Market Hypothesis
4. For that we need a Second-Level thinking, not necessarily contrarian but different from the lot
5. Price is different from Value. Price is a function of fundamentals and market psychology. While Value is mainly a function of fundamentals.
6. The relationship between Risk and Return is not completely linear. Higher Risk entails an element of higher losses too which we tend to ignore assuming a linear relation.
7. A good portfolio considers Risk holistically and balances / hedges it appropriately.
8. Fundamentally, markets operate in cycles. People can benefit from them if they are more attuned.
9. Understand the psychological pitfalls and your own limitations around investing.
10. Appreciate the role of luck which stops you from becoming overconfident.
No wonder, Warren Buffet likes it. Having observed the market, I could relate to many of the ideas mentioned here. This book provides good guidance for anybody who wants to get into investing.


