The traditional 60-40 stock-bond portfolio can lose diversification when corporate bonds comprise much of the fixed income side, as their credit risk is often correlated with equity markets. "A Smarter 60-40" explores how the DoubleLine Total Return Bond Fund (DBLTX) enhances diversification by focusing on securitized credit over corporate bonds. When paired with equities, this approach has historically delivered lower volatility and improved risk-adjusted returns.