Correlation Analysis
Mastercard Incorporated vs Sandisk Corporation Common Stock
MA vs SNDK
-0.599
Moderate inverse
When one moves up, the other tends to move down.
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
Sandisk Corporation Common Stock
↗SNDK
Sandisk is one of the five largest suppliers of NAND flash memory semiconductors globally. Sandisk is vertically integrated, producing substantially all of its flash chips at manufacturing sites across Japan via a joint-venture framework with Kioxia. Sandisk then repackages most of its chips into SSDs for consumer electronics, external storage, or cloud storage. Sandisk was formerly a piece of Western Digital for nine years (after being acquired in 2016) and was spun off as an independent company in 2025.
Market cap 107B · 11,000 employees
Time Series
Relative Performance
Who Moves First
SNDK leads MA by 6 days
SNDK tends to move before MA.
After testing 13 timing shifts, the strongest relationship was -0.628 (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
+0.244
10 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.466
21 periods · Return correlation when series moved apart
R-Squared
35.9%
Share of variance in one series explained by the other.
Trend Agreement
52.1%
How often both series moved in the same direction period-to-period.
Overlap Quality
281
Robust shared window — 281 usable pairs.
Significance
p < 0.001
95% CI: [-0.669, -0.518]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
281 paired data points survived the daily window.
Raw input
1,254
281
Normalized
1,254
281
Prepared
1,254
281
Aligned
281
281
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
973
A: 973 / B: 0
Series A
Mastercard Incorporated
MA
Market cap 447.2B
Stock · 1,254 raw → 1,254 prepared
Series B
Sandisk Corporation Common Stock
SNDK
Market cap 107B · 11,000 employees
Stock · 281 raw → 281 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
-4.8599
Linear regression slope.
Intercept
2887.7198
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
MA
Mastercard Incorporated
Highest
+0.987
VISA Inc.
V · 1,254 data points
Lowest
-0.898
United Parcel Service, Inc. Class B
UPS · 1,254 data points
SNDK
Sandisk Corporation Common Stock
Highest
+0.964
Micron Technology, Inc.
MU · 281 data points
Lowest
-0.749
VISA Inc.
V · 281 data points
Saved 7 hours ago · ID: stock-ma-vs-stock-sndk-daily