Correlation Analysis
Boston Scientific Corp. vs Mastercard Incorporated
BSX vs MA
+0.968
Very strong positive
When one moves up, the other tends to follow.
Boston Scientific Corp.
↗BSX
Boston Scientific produces less invasive medical devices that are inserted into the human body through small openings or cuts. It manufactures products for use in angioplasty, blood clot filtration, kidney stone management, cardiac rhythm management, catheter-directed ultrasound imaging, upper gastrointestinal tract diagnostics, interventional oncology, neuromodulation for chronic pain, and treatment of incontinence. The firm markets its devices to healthcare professionals and institutions globally. Foreign sales account for roughly 36% of the firm's total sales.
Market cap 93B · 59,000 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
BSX leads MA by 6 days
BSX tends to move before MA.
After testing 13 timing shifts, the strongest relationship was +0.969 (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
+0.798
17 periods · Return correlation when both series rose
Both Falling
+0.699
9 periods · Return correlation when both series fell
Diverging
-0.635
9 periods · Return correlation when series moved apart
R-Squared
93.6%
Share of variance in one series explained by the other.
Trend Agreement
62.6%
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: [0.964, 0.971]
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
Boston Scientific Corp.
BSX
Market cap 93B · 59,000 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
27
Estimated crossover points between normalized spreads.
Slope
3.5784
Linear regression slope.
Intercept
201.4699
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 4 hours ago · ID: stock-bsx-vs-stock-ma-daily