A: Active investing involves portfolio managers making deliberate buy, sell, and hold decisions in an attempt to outperform a benchmark index or achieve a specific objective, often using research, analysis, and judgment. Passive investing seeks to replicate the performance of a market index or benchmark by holding the same securities in the same proportions, with minimal trading and no attempt to outperform. Active strategies typically charge higher fees to compensate for research and management expertise, while passive strategies generally offer lower costs due to their rules-based, low-turnover approach.