Correlation Analysis
Equity Residential vs Mastercard Incorporated
EQR vs MA
-0.323
Light inverse
When one moves up, the other tends to move down.
Equity Residential
↗EQR
Equity Residential owns a portfolio of 318 apartment communities with over 86,000 units and is developing three additional properties with 935 units. The company focuses on owning large, high-quality properties in the urban and suburban submarkets of Southern California, San Francisco, Washington, D.C., New York, Seattle, and Boston.
Market cap 22.7B · 2,400 employees
Mastercard Incorporated
↗MA
Mastercard is the second-largest payment processor in the world, having processed close to $11 trillion in volume during 2025. Mastercard operates in over 200 countries and processes transactions in over 150 currencies.
Market cap 447.2B
Time Series
Relative Performance
Who Moves First
EQR leads MA by 6 days
EQR tends to move before MA.
After testing 13 timing shifts, the strongest relationship was -0.336 (they moved in opposite directions).
Do They Crash Together?
Correlation by Market Regime
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
+0.200
12 periods · Return correlation when both series rose
Both Falling
-0.259
10 periods · Return correlation when both series fell
Diverging
-0.725
13 periods · Return correlation when series moved apart
R-Squared
10.4%
Share of variance in one series explained by the other.
Trend Agreement
61.9%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [-0.372, -0.273]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Equity Residential
EQR
Market cap 22.7B · 2,400 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Mastercard Incorporated
MA
Market cap 447.2B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
-3.0028
Linear regression slope.
Intercept
641.5365
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-eqr-vs-stock-ma-daily