Correlation Analysis
Mastercard Incorporated vs Norfolk Southern Corp.
MA vs NSC
+0.318
Light positive
When one moves up, the other tends to follow.
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
Norfolk Southern Corp.
↗NSC
Class I railroad Norfolk Southern operates in the Eastern United States. On more than 20,000 miles of track, the rail hauls shipments of coal, intermodal traffic, and a diverse mix of automotive, agricultural, metal, chemical, and forest products.
Market cap 64.7B · 19,300 employees
Time Series
Relative Performance
Who Moves First
MA leads NSC by 6 days
MA tends to move before NSC.
After testing 13 timing shifts, the strongest relationship was +0.321 (they moved in the same direction).
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
+0.737
10 periods · Return correlation when both series rose
Both Falling
+0.346
9 periods · Return correlation when both series fell
Diverging
-0.725
16 periods · Return correlation when series moved apart
R-Squared
10.1%
Share of variance in one series explained by the other.
Trend Agreement
65.4%
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: [0.267, 0.367]
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
Mastercard Incorporated
MA
Market cap 447.2B
Stock · 1,254 raw → 1,254 prepared
Series B
Norfolk Southern Corp.
NSC
Market cap 64.7B · 19,300 employees
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
0.1026
Linear regression slope.
Intercept
205.5628
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-ma-vs-stock-nsc-daily