Choosing the Right S&P 500 ETF: VOO vs SPY

The article compares the SPDR S&P 500 ETF Trust (SPY) and Vanguard S&P 500 ETF (VOO) to determine which is the better buy. Both ETFs track the S&P 500 index, but VOO has lower fees and higher holdings in the S&P 500. The Morningstar Medalist Rating system can help investors decide between the two. Despite higher concentration in the top 10 holdings and technology stocks, the market-cap-weighting approach used by both ETFs is considered a sensible strategy.