Correlation Analysis
eBay Inc vs Mastercard Incorporated
EBAY vs MA
+0.659
Strong positive
When one moves up, the other tends to follow.
eBay Inc
↗EBAY
EBay operates one of the largest e-commerce marketplaces in the world, with $79.6 billion in 2025 gross merchandise volume, rendering the firm a top 10 global e-commerce company. It generates sales from listing fees, advertising, revenue-sharing arrangements with service providers, and managed payments, with its platform connecting about 135 million buyers and roughly 20 million sellers across almost 190 global markets at the end of 2025. EBay generates just north of 50% of its GMV in international markets, with a large presence in the UK, Germany, and Australia.
Market cap 43.8B · 12,300 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
MA leads EBAY by 6 days
MA tends to move before EBAY.
After testing 13 timing shifts, the strongest relationship was +0.669 (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
+0.400
15 periods · Return correlation when both series rose
Both Falling
+0.352
11 periods · Return correlation when both series fell
Diverging
-0.673
9 periods · Return correlation when series moved apart
R-Squared
43.4%
Share of variance in one series explained by the other.
Trend Agreement
63.1%
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: [0.627, 0.689]
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
eBay Inc
EBAY
Market cap 43.8B · 12,300 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
7
Estimated crossover points between normalized spreads.
Slope
3.4950
Linear regression slope.
Intercept
222.7696
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-ebay-vs-stock-ma-daily