Who Are You Calling Passive? Many Index ETFs Dynamically Rebalanced in September
There is a myth that index-based ETFs are all static buy-and-hold products that passively track a benchmark. Many people think of indexing through the lens of market-cap strategies like the Vanguard S&P 500 ETF (VOO). For VOO, holdings simply adjust based on daily price moves. However, as VettaFi de