Compare

2 stocks, side by side
Relative performance · rebased to 100
EXRPSA
Pair ratio · EXR ÷ PSARelative value, rich or cheap vs their own history

The price ratio EXR ÷ PSA with its 1Y mean and ±1σ / ±2σ bands; the z-score is how far the ratio sits from its average. A stretched reading flags one stock as rich vs the other relative to their history, but mean-reversion isn't guaranteed (a durable re-rating from better growth or margins can keep the ratio elevated). Research tooling, not advice.

EXRExtra Space StoragePSAPublic Storage
Smart Score5/107/10
Price$145.86$317.92
1 month+2.9%+5.1%
1 year+2.5%+12%
5 year+12%+35%
P/E (TTM)32.832.7
P/E vs sector+16%+15%
Market cap$32.1B$55.9B
SectorReal EstateReal Estate
Risk / Return · past yearAnnualized return vs volatility, up-and-left is more reward for less risk.
Correlation · do they move together?Pairwise daily-return correlation over the past year, high = one bet, low = diversifying.