Correlation Analysis
HCA Healthcare, Inc. vs Micron Technology, Inc.
HCA vs MU
+0.818
Strong positive
When one moves up, the other tends to follow.
HCA Healthcare, Inc.
↗HCA
HCA Healthcare is a Nashville-based healthcare provider organization operating the largest collection of acute-care hospitals in the United States. As of December 2025, the firm owned and operated 190 hospitals and over 2,500 outpatient facillities across 19 states and a small foothold in the United Kingdom.
Market cap 108.2B · 320,000 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
HCA leads MU by 6 days
HCA tends to move before MU.
After testing 13 timing shifts, the strongest relationship was +0.822 (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
+0.600
11 periods · Return correlation when both series rose
Both Falling
+0.571
8 periods · Return correlation when both series fell
Diverging
-0.737
16 periods · Return correlation when series moved apart
R-Squared
66.9%
Share of variance in one series explained by the other.
Trend Agreement
59.8%
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: [0.799, 0.835]
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
HCA Healthcare, Inc.
HCA
Market cap 108.2B · 320,000 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
50
Estimated crossover points between normalized spreads.
Slope
0.7494
Linear regression slope.
Intercept
-119.0714
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-hca-vs-stock-mu-daily