Index-Based ETFs Undergo Dynamic Rebalances Based on Fundamentals

The myth that index-based ETFs are static buy-and-hold products has been debunked by VettaFi, which revealed that many prominent ETFs undergo dynamic rebalances based on company fundamentals or valuation.

In mid-September, several notable ETFs underwent rebalancing cycles, driven by strict rules-based methodologies. For example, the $11 billion VictoryShares Free Cash Flow ETF (VFLO) added IBM and Micron Technology after their September rebalance, while the $2 billion American Century US Quality Growth ETF (QGRO) now includes Amazon but no longer holds Nvidia.

The Procure Space ETF (UFO) saw its weighting in SpaceX more than double during the $550 million fund rebalance. VettaFi-managed benchmarks show that rules-based methodologies continuously reshape factor and thematic portfolios, allowing ETFs to capture emerging trends and swap in companies with improving fundamentals without introducing human manager bias.