Both in REITs

Extra Space Storage vs Iron Mountain

Over the past year EXR returned −7.2% and IRM returned +12.1%; their daily moves had a correlation of 0.32.

EXR −7.2% IRM +12.1%Growth of $1, one year, split-adjusted
MetricEXRIRM
Price$134.65$114.51
Market cap$28.45B$34.09B
Today+1.15%+1.36%
1 month−1.3%+1.4%
6 months−3.0%+4.7%
Year to date+3.4%+38.0%
1 year−5.4%+8.7%
Revenue growth (YoY)+3.9%+18.5%
Gross margin73.5%52.8%
Net margin30.1%5.0%
P/E (TTM)29.8×81.4×
Price / sales8.3×4.5×
Net cash-$12.95B-$17.14B
Dividend yield4.81%3.02%
Volatility (60d)17.9%29.4%
Short % of float2.6%2.5%
Next earnings——

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