Mamadou Abou-Sarr, co-founder and president of V-Square Quantitative Management, says equities remain resilient with the S&P 500 up (SPX) about 2.8% for the quarter, driven by AI. He warns the 10-year yield above 5.3% could eventually overwhelm earnings growth, making a stronger case for active management and true diversification. He stresses that owning multiple asset classes isn't real diversification if they all share the same risk factors.