John Bogle told Paul Merriman that do-it-yourself investors shouldn't manage 10 different funds.
Host Paul Merriman discusses the future of financial literacy and evaluates long-term investment portfolio performance. He is the founder of the Sound Investing podcast and a financial educator. Merriman references his upcoming speaking engagement with the Garrett Planning Network, a group of about 100 hourly financial advisors.
He details a historical "ultimate buy-and-hold" strategy that initially involved allocating 10% across ten different equity asset classes. Merriman credits academic research, not Wall Street, for informing this approach. A conversation with Vanguard founder John Bogle led him to believe do-it-yourself investors could not manage a 13-fund portfolio. Researcher Chris Pedersen helped simplify the strategy down to four, and eventually two, funds for better diversification.
Merriman analyzes which portfolio strategy performed best since 1970, referencing specific comparison tables like "H2A." He states the S&P 500 returned 10.9% annually, while a worldwide all small-cap value portfolio returned 13.7%. A two-fund strategy split between the S&P 500 and small-cap value returned 12.5%. All the multi-asset combinations he discusses outperformed the S&P 500 over that period.
He emphasizes the importance of avoiding significant underperformance, highlighting the period from 2000 to 2009. During that decade, the S&P 500 had an annual return of -1%. In contrast, a 50-50 S&P 500 and small-cap value portfolio returned 4.2%, and the ultimate buy-and-hold strategy returned 7.5%. The worldwide all-value portfolio returned 8.5% annually during that same difficult period.
Merriman notes the worst ten-year period for the ultimate buy-and-hold was 2000-2009, with a 7.3% return. He compares this to the period from 2010 through 2024, where the S&P 500 returned 13.9% but the ultimate buy-and-hold returned 8.8%. He ultimately gives the performance edge to the worldwide all-value portfolio for its consistency. He also praises the simplicity and results of the two-fund, half S&P 500 and half small-cap value strategy.
An interesting insight is Merriman's personal shift from a complex ten-fund approach to advocating for simpler portfolios based on feedback from John Bogle and his team. He reveals his team is considering reducing their podcast and newsletter frequency from weekly to bi-weekly to manage volunteer workloads. Merriman expresses significant curiosity about integrating AI into the future of financial literacy education.
He mentions an upcoming eight-hour team meeting with colleagues Daryl and Chris to reassess their volunteer commitments. Listeners are encouraged to email feedback on what content is helpful or missing. Merriman shares that he was recently interviewed by financial educator Erin Moriarity for her YouTube channel. He commends his colleagues as "sticklers for doing stuff right" who frequently remind him to account for inflation when discussing returns.
The tone is educational and conversational, directly addressing the listener with personal anecdotes and data. The style is that of a solo host sharing research and fielding listener questions, often referencing specific historical performance tables. Investors seeking data-driven comparisons of long-term portfolio strategies would appreciate this episode. Listeners looking for guest interviews or current market news might find it less engaging.
