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iShares Core S&P 500 ETF vs State Street SPDR S&P 500 ETF Trust

Over the past year IVV returned +10.8% and SPY returned +10.8%; their daily moves had a correlation of 1.00.

IVV +10.8% SPY +10.8%Growth of $1, one year, split-adjusted
MetricIVVSPY
Price$760.78$757.12
Market cap$878.21B$803.25B
Today−0.30%−0.35%
1 month−1.6%−1.6%
6 months+1.2%+1.2%
Year to date+11.1%+11.0%
1 year+10.9%+10.9%
Revenue growth (YoY)——
Gross margin——
Net margin——
P/E (TTM)——
Price / sales——
Net cash——
Dividend yield1.16%1.00%
Volatility (60d)14.9%14.9%
Short % of float——
Next earnings——

Shading marks the stronger figure where one clearly exists (lower is better for valuation and volatility).