Correlation Analysis
Martin Marietta Materials vs Micron Technology, Inc.
MLM vs MU
+0.669
Strong positive
When one moves up, the other tends to follow.
Martin Marietta Materials
↗MLM
Martin Marietta Materials is one of the United States' largest producer of construction aggregates (crushed stone, sand, and gravel). In 2024, Martin Marietta sold 191 million tons of aggregates. Martin Marietta's most important markets include Texas, North Carolina, Colorado, California, and Georgia, accounting for most of its sales. The company also uses its aggregates in its asphalt and ready-mixed concrete businesses. Martin's magnesia specialties business produces magnesia-based chemical products and dolomitic lime.
Market cap 36.1B · 9,600 employees
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
Time Series
Relative Performance
Who Moves First
MLM leads MU by 6 days
MLM tends to move before MU.
After testing 13 timing shifts, the strongest relationship was +0.681 (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
-0.077
13 periods · Return correlation when both series rose
Both Falling
+0.541
12 periods · Return correlation when both series fell
Diverging
-0.316
10 periods · Return correlation when series moved apart
R-Squared
44.7%
Share of variance in one series explained by the other.
Trend Agreement
64.7%
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: [0.637, 0.698]
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
Martin Marietta Materials
MLM
Market cap 36.1B · 9,600 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Micron Technology, Inc.
MU
Market cap 426B · 53,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
20
Estimated crossover points between normalized spreads.
Slope
0.4893
Linear regression slope.
Intercept
-120.8093
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-mlm-vs-stock-mu-daily