Correlation Analysis
Sandisk Corporation Common Stock vs Exxon Mobil Corporation
SNDK vs XOM
+0.956
Very strong positive
When one moves up, the other tends to follow.
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
Exxon Mobil Corporation
↗XOM
ExxonMobil is an integrated oil and gas company that explores for, produces, and refines oil worldwide. In 2025, it produced 3.3 million barrels of liquids and 8.4 billion cubic feet of natural gas per day. At the end of 2024, reserves were 19.9 billion barrels of oil equivalent, 69% of which were liquids. The company is one of the world's largest refiners, with a total global refining capacity of 4.3 million barrels of oil per day, and is one of the world's largest manufacturers of commodity and specialty chemicals.
Market cap 680.7B
Time Series
Relative Performance
Who Moves First
SNDK leads XOM by 6 days
SNDK tends to move before XOM.
After testing 13 timing shifts, the strongest relationship was +0.968 (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
+0.505
18 periods · Return correlation when both series rose
Both Falling
+0.213
7 periods · Return correlation when both series fell
Diverging
-0.478
10 periods · Return correlation when series moved apart
R-Squared
91.3%
Share of variance in one series explained by the other.
Trend Agreement
53.4%
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: [0.944, 0.965]
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
Exxon Mobil Corporation
XOM
Market cap 680.7B
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
0.0729
Linear regression slope.
Intercept
104.7782
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
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-sndk-vs-stock-xom-daily