DIY Investing Resource #2: The Little Book of Common Sense Investing

In my opinion, if you want to understand stock market investing and especially investing using mutual funds, then John Bogle’s The Little Book of Common Sense Investing: The Only Way to Guarantee Your Fair Share of Stock Market Returns is the one book that you must read.

This short, concise book has high information density with valuable insights, explanations and examples on every one of its 216 pages.  The book can be summarized in one of its quotations: “The two greatest enemies of the equity fund investor are expenses and emotions.”  These points are hammered home again and again throughout the book which outlines the basis behind index fund investing.

I will acknowledge that the message of this book, touting the virtues of index investing, is of little surprise.  The author, John Bogle, founded the Vanguard Mutual Fund Group as well as the first index fund available to retail investors.  That being said, after ten years of investing in actively managed mutual funds sold to us by our investment advisor and pushed through our work retirement plans, we have made most of the mistakes and have fallen prey to almost every single sales tactic and half-truth pushed by the financial industry as presented by Mr. Bogle.

While we found this book extremely valuable to our investing education, I must admit that reading it at times made me absolutely sick!  I spent the $22.95 retail price and about 3 hours reading this book.  This minimal investment of time and money could have saved us $100,000+ in fees and taxes that we have paid unnecessarily over our first 10 years of investing IF I would have read it PRIOR to investing.  We would then have all of that money compounding many times over our long investing time frames.  OOPS!

The book starts with a parable about the hypothetical “Gotrocks Family” that owns all of the shares of every stock available in the U.S (representing all investors).  This parable demonstrates that all investors get the sum of the earnings of business (all of the dividends + all of the growth in value.)  However, when a few in the family decide they want to get a bigger share, they begin to hire “helpers” (money managers, stock pickers, investment advisors, etc).  In the end, the helpers can add nothing of value to the family because the total returns are still the sum of business earnings.  However the “helpers” do introduce new costs.  In the end, a few in the family “win” and others “lose” by an equal amount because the helpers bring no net value to the equation.  However, the family as a whole loses because the costs paid to the “helpers” means that they deduct value from everyone.  The moral of the story:  The return for investors = Market Return – Costs.  Therefore, “if investors pay nothing, they keep everything.”  Conversely, the more they pay for this “help”, the less they keep.  It is a simple but indisputable idea that forms the basis of index investing.

In chapter 11 Mr. Bogle makes the case that the easiest way to choose a winning mutual fund is to focus on the lowest cost, highly diversified index funds that buy and hold their assets forever.  In this way you avoid or minimize all four layers of costs as outlined in the book:  annual expense ratios, loads, internal fund expenses incurred through frequent trading, and taxes on capital gains.  Expense ratios are clearly disclosed by funds (though few people even know what they are).  The Vanguard index funds we own have expense ratios averaging .1% compared to an average of  around 1.25% for the actively managed funds sold by our advisor.  This represents 12.5X greater cost EVERY YEAR to hold the active funds.  The second layer of cost is loads.  These are commonly 5+% paid up front which is deducted from the amount invested.  This means that this money and all that it would have made over time is gone.  Vanguard (and most index) funds have no sales loads.  The next hidden layer of cost is fund turnover.  Bogle estimates that you lose 1%/year in performance for every 100% turnover in assets held by a fund due to transaction costs.  Many actively managed funds turn over their entire portfolio in a year.  The average turnover is 60%.  Index funds have a turnover at or near zero, eliminating this expense completely.  The final expense is taxes, averaging 1.8%/year in federal taxes alone for actively managed funds.  Index funds incur taxes of about 1/3 this size, despite having greater returns.  For people investing in taxable accounts, the effect of this is huge as we demonstrated in this post.  The book demonstrates that after adding all of these fees together the average mutual fund grows to only 1/3 the size of the an index fund over 25 years.  You did not misread that statistic.  A full 2/3 of your money is gone to fees and taxes after 25 years of investing.

As costly as expenses are, behavioral errors made by chasing past returns are often even more costly to investors.  However, most mutual funds market directly to this irrational belief that you can choose a good fund based on past returns.  Bogle presented some truly fascinating statistics disproving this myth.  He showed that of the 335 mutual funds in existence in 1970, only 132 had even survived the 35 year period through 2005, making the odds of buying and holding a fund forever unlikely even if you wanted to.  If you happened to select a fund that survived, 60 of the 132 survivors underperformed the S&P 500 by >1%/year and another 48 were +/- 1% of the index.  This means that only 24 of the 335 funds (7%) outpace the market by >1%.  Only 9 of 335 (2.5%) outperformed the S&P 500 by >2% annually.  This means you pay substantial fees to take on all of the investment risk in return for a 1 in 40 chance of outperforming the market by > 2%.

Actually, your odds are not even that good.  Bogle explains that many investors flow into the “winning” funds after they have had their success, and so the oversized returns that the funds report are never experienced by most investors holding the funds.  He also reveals the secret behind how it looks like a much higher percentage of actively managed funds have winning records than actually do.  As funds underperform and fall out of favor, they are quietly folded and merged in with successful funds.  The returns are then reported for the successful funds, even though most investors owning the funds have never received these returns.  In just the 2 years that we have been managing and closely monitoring our own investments, we have witnessed this with two funds we bought through our advisor and another fund in my 401(k).  Unless you closely track each dollar you contribute to a fund and each fund merger carefully, you have no idea what your own personal investment return is.  The numbers reported by funds are pure fiction for most investors.

In this book, John Bogle makes it clear why “investing is simple, but it is not easy.”  He pulls back the curtain on the practices of the financial industry and reveals the many layers of fees that eat away at investor returns.  He clearly articulates how emotions of greed and fear drive investor behaviors and how Wall Street loves to capitalize on these emotions.  This book gives you the tools to invest successfully so you can be guided by the “relentless rules of humble arithmetic” and “don’t allow a winner’s game to become a loser’s game”.

So will you follow Bogle’s warnings?  Are you convinced of the idea of index investing?  If you don’t fully understand the game you’re playing when investing, you would be wise to read The Little Book of Common Sense Investing: The Only Way to Guarantee Your Fair Share of Stock Market Returns to learn the rules first.


Elephant Eater

Sign up to receive our posts!

Sign up now to receive our posts via email. Just enter your email address below to begin following us on our journey to financial independence!

2 comments on DIY Investing Resource #2: The Little Book of Common Sense Investing

  1. Bogle’s earlier book “Bogle on Mutual Funds: New Perspectives for the Intelligent Investor” is the best book on investing basics. It’s essentially his PhD thesis. Summaries of each chapter at the end of the chapter.

    1. I chose the “Little Book” because it made a lot of sense to me as someone who has felt a bit cheated by the tactics of the financial industry in the past. This book really clarified the sales tactics that I’ve been fed through an advisor and the 401(k) providers I’ve had access to. I think it really allows people to be educated consumers of the financial industry.

      What in “Bogle on Mutual Funds” makes it a better read? I’d love to hear more insight.

Comments are closed.

%d bloggers like this: