Correlation Analysis
Sandisk Corporation Common Stock vs VISA Inc.
SNDK vs V
-0.749
Strong inverse
When one moves up, the other tends to move down.
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
VISA Inc.
↗V
Visa is the largest payment processor in the world. In fiscal 2025, it processed almost $17 trillion in total volume. Visa operates in over 200 countries and processes transactions in over 160 currencies. Its systems are capable of processing over 65,000 transactions per second.
Market cap 583.4B
Time Series
Relative Performance
Who Moves First
SNDK leads V by 6 days
SNDK tends to move before V.
After testing 13 timing shifts, the strongest relationship was -0.768 (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
-0.240
9 periods · Return correlation when both series rose
Both Falling
-0.199
5 periods · Return correlation when both series fell
Diverging
-0.472
21 periods · Return correlation when series moved apart
R-Squared
56.2%
Share of variance in one series explained by the other.
Trend Agreement
55.0%
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: [-0.797, -0.693]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
281 paired data points survived the daily window.
Raw input
281
1,254
Normalized
281
1,254
Prepared
281
1,254
Aligned
281
281
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
973
A: 0 / B: 973
Series A
Sandisk Corporation Common Stock
SNDK
Market cap 107B · 11,000 employees
Stock · 281 raw → 281 prepared
Series B
VISA Inc.
V
Market cap 583.4B
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
-0.0544
Linear regression slope.
Intercept
350.4345
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 4 hours ago · ID: stock-sndk-vs-stock-v-daily