Correlation Analysis
Micron Technology, Inc. vs Sandisk Corporation Common Stock
MU vs SNDK
+0.964
Very strong positive
When one moves up, the other tends to follow.
Micron Technology, Inc.
↗MU
Micron is one of the largest semiconductor companies in the world, specializing in memory and storage chips. Its primary revenue stream comes from dynamic random access memory, or DRAM, and it also has minority exposure to not-and or NAND, flash chips. Micron serves a global customer base, selling chips into data centers, mobile phones, consumer electronics, and industrial and automotive applications. The firm is vertically integrated.
Market cap 426B · 53,000 employees
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
MU leads SNDK by 6 days
MU tends to move before SNDK.
After testing 13 timing shifts, the strongest relationship was +0.971 (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
+0.649
20 periods · Return correlation when both series rose
Both Falling
+0.927
10 periods · Return correlation when both series fell
Diverging
-0.140
5 periods · Return correlation when series moved apart
R-Squared
93.0%
Share of variance in one series explained by the other.
Trend Agreement
69.6%
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: [0.955, 0.972]
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
Micron Technology, Inc.
MU
Market cap 426B · 53,000 employees
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
3
Estimated crossover points between normalized spreads.
Slope
1.7980
Linear regression slope.
Intercept
-156.7540
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
MU
Micron Technology, Inc.
Highest
+0.982
Western Digital Corp.
WDC · 1,254 data points
Lowest
-0.640
Constellation Brands, Inc.
STZ · 1,254 data points
SNDK
Sandisk Corporation Common Stock
Highest
+0.956
Exxon Mobil Corporation
XOM · 281 data points
Lowest
-0.749
VISA Inc.
V · 281 data points
Saved 4 hours ago · ID: stock-mu-vs-stock-sndk-daily