A new bull market is underway, with a supportive macro environment and AI-driven efficiency gains expected to fuel a broad-based earnings recovery. This outlook has led strategists to upgrade U.S. small-cap stocks, now preferring them over the large-caps which have dominated recent growth.

The quality of public small-cap companies, measured by Return on Invested Capital (ROIC), has plummeted from 7.5% to 3% over 30 years. This degradation means high-growth opportunities now predominantly exist in the later-stage private markets. Institutional investors must shift their asset allocation to venture and growth equity, which has become "the big leagues," not a bespoke asset class.

The speaker divides his portfolio into two distinct categories: stable, long-term "Quality Businesses" and high-growth "Micro-cap Inflection Point" businesses. Each bucket has its own specific criteria, allowing for a balanced approach between reliable compounding and high-upside opportunities.

The S&P 600 small-cap index has massively outperformed the more popular Russell 2000. The key difference is the S&P 600's requirement for profitability, which screens out speculative, pre-revenue "junk" companies that drag down the Russell 2000's returns, especially during speculative bubbles.

When markets are top-heavy and expensive, like in 2000, the concentration risk of market-cap weighting is severe. In the 13 years after the dot-com peak, while the S&P 500 went nowhere, its equal-weighted version doubled, highlighting a powerful de-risking strategy.

As high-growth tech companies delay IPOs, the public small-cap market is left with lower-quality assets. The return on invested capital (ROIC) for the Russell 2500 index has more than halved over 30 years, signaling a fundamental shift for institutional investors.

Contrary to belief, small-cap investing doesn't have to be excessively volatile. By focusing on quality and portfolio construction, a portfolio of ~80 small-cap names can achieve a historical volatility of 10-13%, less than half that of the Russell 2000 index (25-30%), while remaining fully invested.

Market-cap weighting turned the S&P 500 into a momentum fund for megacaps, leading to a decade of outperformance versus its equal-weight counterpart—a historical anomaly. Recent signs of equal-weight taking the lead suggest a potential market regime shift back towards value and smaller companies.

Market efficiency increases with company size and liquidity. Therefore, the excess returns (alpha) from investment factors like value are significantly larger in the inefficient micro-cap space. For large-caps, the market is so efficient that factor premiums are minimal, making low-cost indexing a superior strategy.