There’s a lot to say, so let’s start at the beginning.
BH(BogleHead) investing is a great and simple approach, especially for people who don’t know much about investing. It also works well for most investors because even professionals rarely beat it over the long run.
At the core of BH investing are funds like VOO, SPY, or VTI for stocks and BND for bonds. The stocks ones are among the best indexes ever created, largely because they are built on the U.S. economy, arguably the greatest engine of opportunity and capitalism in history.
That said, a few additional thoughts are worth considering:
- Concentration vs. the index:
If the S&P 500 is one of the best indexes, then its top companies should be even better. Technology now drives much of the global economy, and over the last 15 years QQQ has nearly doubled the performance of VOO, about 1,190% versus 619% (see chart). That raises the question of whether the SP500 is always optimal.
- Risk tolerance isn’t static:
Risk tolerance is hard to define, especially as a portfolio grows. A young investor with $100K who loses 40% may shrug it off. But a 55-year-old who loses 30% of a $1 million portfolio may panic and sell near the bottom. Risk tolerance changes with age, portfolio size, and life circumstances.
- Diversification is more complex than it sounds:
Is the S&P 500 diversified enough on its own, or do you really need multiple stock indexes? Is more diversification always better? The S&P 500 performed exceptionally well from 2010 to today, but lost money for a full decade from 01/2000 to 01/2010. Diversification choices matter more than most people admit.
- Tax efficiency vs. risk-adjusted returns:
Tax efficiency is important, but it’s not everything. Most people I know with portfolios over $500K, including myself, built the majority of their savings through work and 401(k) plans. Personally, I place much more importance on risk-adjusted performance than on tax efficiency alone.
- Retirement is the hardest problem:
Managing retirement correctly is far more difficult than accumulation. BH strategies, and many articles and experts, don’t offer practical answers for most Americans. The common advice assumes very large portfolios, which most people don’t have. Telling people to “just work longer” isn’t realistic for many.
- Lack of openness to alternatives:
BH communities are often closed to other approaches. When I posted on their site in the mid-80s and shared my models and funds, I was warned and dismissed. That’s not how learning or growth happens. Over time, I found additional funds that met my criteria and helped me reach my goals with much lower volatility and stress, something BH proponents never adequately addressed.
- Bonds: The BH Total Bond Index (BND) has proven to be a disappointing bond option. Over the past five years it has lost money, and over the past 10–15 years its average annual return has been only about 1.9–2.4%. During the same period, I achieved X times that return with lower volatility.
To summarize, BH is an excellent approach for most investors because of its simplicity. However, like many simple solutions, it falls short when addressing more complex or unique situations, particularly those faced by retirees.