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

Over the past year QID returned −26.1% and SPY returned +11.3%; their daily moves had a correlation of -0.93.

QID −26.1% SPY +11.3%Growth of $1, one year, split-adjusted
MetricQIDSPY
Price$14.84$760.43
Market cap$251.5M$806.76B
Today−0.13%+0.08%
1 month+9.0%−1.2%
6 months+1.9%+1.6%
Year to date−26.5%+11.5%
1 year−26.1%+11.3%
Revenue growth (YoY)——
Gross margin——
Net margin——
P/E (TTM)——
Price / sales——
Net cash——
Dividend yield4.69%0.99%
Volatility (60d)46.1%14.9%
Short % of float——
Next earnings——

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