Personal finance advice reaches most people through magazines, TV, bestsellers, podcasts, and radio, not through academic researchers.

In this episode of The Behavioral Divide, Professor Hal Hershfield talks with Yale finance professor James Choi about what he found after analyzing the 50 most popular personal finance books. They discuss where the books get it right, where they diverge from the evidence, and which academic findings could meaningfully strengthen real-world advice.

This podcast is a clear reminder to stay grounded in what the data supports, especially when the loudest guidance is often the easiest to oversimplify. Looking for additional research? Reach out to us to talk more about this. 

Recently, our Hill team gathered at Round Hill (a storied boutique resort) in Jamaica to mark an important milestone: 20 years of serving the families who have placed their trust in us.

It was a true celebration.

Yes, islands, especially Jamaica, have a way of slowing you down. But what made the time meaningful was the chance to pause together and reflect on what has been built over two decades and, more importantly, why it was built in the first place.

As I looked around the group, I kept coming back to something Rick Hill impressed upon me early on: great firms endure because of people who care deeply, take quiet ownership, and hold themselves to a high standard, whether anyone is watching or not.

That spirit was unmistakable throughout the trip.

There was plenty of laughter. Real connection. The kind of easy camaraderie that only develops over years of working alongside people you respect and trust. We also invited spouses to join us, and that added a dimension I did not fully appreciate until I saw it unfold. Our work at Hill asks a great deal of the people who choose this path. Having spouses there brought more context, more gratitude, and more heart to the experience. It reminded all of us that the strength of Hill is supported by families who quietly stand behind the scenes.

The pinnacle for me came on our final night together. One by one, team members stood up and shared their favorite memories from their time at Hill. Some were funny. Some were deeply moving. All of them pointed to the same thing: a group of people who genuinely care about one another and about doing work that matters.

In that moment, it felt like we had quietly crossed into a new level of shared commitment. Not a finish line. Something better. A deeper understanding of what we are building together and why it matters.

Each year, during our time together, we present the Rick Hill Award. It is one of the traditions we hold most dear because it honors the kind of steady, values-driven contribution that Rick modeled from the very beginning. I am excited to share more about this year’s recipient below.

20 years in, Hill has never been stronger. We remain focused, grateful, and energized about the road ahead.

If you have been with us for part of this journey, thank you. Your trust is the reason moments like this matter.

And the most meaningful part of the story is still ahead.

Take the long view,

Matt

If 2025 reinforced anything, it is how quickly markets can test conviction and how costly it can be to react emotionally or narrowly. 

By April 8, the S&P 500 was down 15%, driven largely by Liberation Day and the sudden imposition of global tariffs. Volatility spiked, sentiment deteriorated, and the narrative quickly shifted toward protectionism and questions around US leadership.

Then, just one day later, markets delivered a stark reminder of how unpredictable short-term moves can be.

On April 9, the S&P 500 experienced one of the largest single-day rallies in history, with the S&P 500 rising 9.5% in a single session. Note: That one-day gain is larger than the average annual return of the S&P 500 since it’s existed. Investors who had de-risked or moved to the sidelines in response to the drawdown were not there to participate.

Despite being down double digits just three months into the year, the S&P 500 finished 2025 up nearly 18%, an outcome that few would have predicted during the spring selloff.

But the more important story was not just that markets recovered. It was where the returns came from. Global markets, as measured by the MSCI ACWI index were up 23%.

The Case for Global Diversification

2025 was a powerful reminder that returns rotate, often abruptly, and often away from what has worked most recently.

• US Market (S&P 500): +18%
• International Developed ex US (MSCI World ex US Index): +33%
• International small value (MSCI World ex US Small Value Index): +40%
• Emerging Markets (MSCI Emerging Markets Index): +34%

Investors who reduced international exposure or concentrated further into US equities, often justified by recent outperformance, materially underperformed what markets ultimately delivered.

International small value in particular was one of the strongest performers globally, with the ETF we use, the Avantis International Small Value ETF, returning 50% for 2025!

The Bigger Lesson

Markets do not reward confidence in narratives. They reward discipline. Investing in all types of markets and staying invested in all Markets.

Short term drawdowns are uncomfortable. Large single day rallies are unpredictable. The investors who captured 2025 returns were not those who timed exits or chased recent winners. They were those who stayed invested, stayed diversified, and allowed markets to do what they have historically done over time.

In years like 2025, the value of diversification is not theoretical. It is measurable.

And it is earned by maintaining exposure when doing so feels hardest.