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

Over the past year SDS returned −18.8% and SPY returned +10.0%; their daily moves had a correlation of -0.99.

SDS −18.8% SPY +10.0%Growth of $1, one year, split-adjusted
MetricSDSSPY
Price$56.44$749.92
Market cap$398.5M$795.61B
Today+0.73%−0.37%
1 month+7.4%−3.6%
6 months−3.9%+1.6%
Year to date−17.6%+10.0%
1 year−21.3%+11.8%
Revenue growth (YoY)+75.5%—
Gross margin69.7%—
Net margin−640.5%—
P/E (TTM)——
Price / sales691.5×—
Net cash-$595.3K—
Dividend yield4.46%1.01%
Volatility (60d)28.6%14.7%
Short % of float——
Next earnings——

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