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ProShares Ultra S&P500 vs State Street SPDR S&P 500 ETF Trust

Over the past year SSO returned +9.8% and SPY returned +7.9%; their daily moves had a correlation of 1.00.

SSO +9.8% SPY +7.9%Growth of $1, one year, split-adjusted
MetricSSOSPY
Price$63.85$735.29
Market cap$6.96B$780.09B
Today+0.54%+0.31%
1 month−10.4%−5.0%
6 months−3.6%−0.3%
Year to date+10.2%+7.8%
1 year+10.9%+8.5%
Revenue growth (YoY)——
Gross margin——
Net margin——
P/E (TTM)——
Price / sales——
Net cash——
Dividend yield0.74%1.03%
Volatility (60d)27.9%13.8%
Short % of float——
Next earnings——

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