Correlation Analysis
Micron Technology, Inc. vs Ulta Beauty, Inc. Common Stock
MU vs ULTA
+0.639
Moderate 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
Ulta Beauty, Inc. Common Stock
↗ULTA
Ulta Beauty is the largest specialized beauty retailer in the US with more than 1,500 freestanding stores. The firm offers cosmetics (38% of 2025 sales), fragrances (13%), skin care (24%), and hair care products (19%). It also has salon services, including hair, makeup, skin, and brow, that account for 4% of its revenue and drive customer traffic. Outside of the US, Ulta operates premium beauty retailer Space NK (86 stores at year-end 2025 in the UK and Ireland) and has franchised stores in Mexico, and a joint venture in the Middle East. In addition, Ulta collects royalties through its Target partnership (ending in summer 2026) and credit card revenue. Ulta was founded in 1990 and is based in Bolingbrook, Illinois.
Market cap 23.7B · 65,000 employees
Time Series
Relative Performance
Who Moves First
ULTA leads MU by 6 days
ULTA tends to move before MU.
After testing 13 timing shifts, the strongest relationship was +0.662 (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
+0.099
9 periods · Return correlation when both series rose
Both Falling
+0.435
9 periods · Return correlation when both series fell
Diverging
-0.480
17 periods · Return correlation when series moved apart
R-Squared
40.8%
Share of variance in one series explained by the other.
Trend Agreement
61.3%
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: [0.605, 0.670]
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
Micron Technology, Inc.
MU
Market cap 426B · 53,000 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Ulta Beauty, Inc. Common Stock
ULTA
Market cap 23.7B · 65,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
42
Estimated crossover points between normalized spreads.
Slope
0.6596
Linear regression slope.
Intercept
366.0592
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
ULTA
Ulta Beauty, Inc. Common Stock
Highest
+0.595
Exxon Mobil Corporation
XOM · 1,254 data points
Lowest
+0.198
Amazon.Com Inc
AMZN · 1,254 data points
Saved 4 hours ago · ID: stock-mu-vs-stock-ulta-daily