This document discusses mixing active and passive investments by analyzing the performance of S&P 500 index funds (SPSP) and large-cap core funds (LCCE) over 20 years. It finds that using a technical indicator called MACD to trigger movements between SPSP and LCCE funds based on whether active funds were outperforming provided higher returns than either approach alone. Specifically, a portfolio that moved between SPSP and LCCE based on MACD signals achieved an average annual return of 11.92%, compared to 11.36% for SPSP alone and 10.84% for LCCE alone.