VOO and IVV are closing in on SPY in the race to become the top S&P 500 ETF. According to data from etf.com, both VOO and IVV have been gaining ground on SPY in terms of popularity among investors. This trend shows that investors are increasingly turning to these two ETFs as their go-to options for tracking the S&P 500 index. While SPY has long been the dominant player in this space, the rise of VOO and IVV indicates a shifting landscape in the world of ETF investing. It will be interesting to see how this competition unfolds in the coming months and years.