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

Over the past year IBB returned +33.9% and SPY returned +7.9%; their daily moves had a correlation of 0.49.

IBB +33.9% SPY +7.9%Growth of $1, one year, split-adjusted
MetricIBBSPY
Price$213.63$735.29
Market cap$11.14B$780.09B
Today+1.73%+0.31%
1 month+6.6%−5.0%
6 months+25.7%−0.3%
Year to date+26.6%+7.8%
1 year+34.9%+8.5%
Revenue growth (YoY)——
Gross margin——
Net margin——
P/E (TTM)——
Price / sales——
Net cash——
Dividend yield0.02%1.03%
Volatility (60d)28.8%13.8%
Short % of float——
Next earnings——

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