Insight

PM Spotlight: From Nuclear Engineering to Equity Portfolios

Many portfolio managers think like engineers, but it’s rare to find one with a background in nuclear engineering. John Campbell explains how his team fuses systematic and fundamental models to manage U.S. equities.

John Campbell

9/29/2025

6 min read


Topic

Direct Indexing

Key takeaways

  • Combining systematic and fundamental models is a powerful way to compare multiple stocks in the same industry group or at similar stages of the business life cycle.
  • With high market concentration in large-cap stocks, there are opportunities to go down capitalization or to diversify portfolios with direct indexing and tax-loss harvesting.
  • It’s important to focus on company-specific and sector-specific impacts from tariffs. Domestically oriented companies may ultimately see a relative advantage or a less negative impact.