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Correlation Analysis

ATI Inc. vs Micron Technology, Inc.

ATI vs MU

+0.880

Very strong positive

When one moves up, the other tends to follow.

ATI logo

ATI Inc.

ATI

ATI Inc supplies specialty metals to various end markets, including aerospace and defense, oil and gas, automotive, and electrical energy, among many others. The company's operating segment includes High-Performance Materials and Components and Advanced Alloys and Solutions. The majority of revenue is from the High-Performance Materials segment. The High-Performance Materials segment is focused on a wide range of high-performance specialty materials, parts, and components for several the majority of end markets, including the aerospace & defense, medical, and energy markets. Geographically, it operates in the United States, China, the United Kingdom, Germany, France, Canada, and Others, the majority is from the United States.

Market cap 20.2B · 7,600 employees

MU logo

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

Apr 9, 2021 — Apr 7, 2026Daily1,254 data pointsStockStockTechnology

Time Series

Relative Performance

Green: ATIGray: MU36 of 1,254 points (sampled)

Who Moves First

in sync

ATI and MU tend to move at the same time.

After testing 13 timing shifts, the strongest relationship was +0.880 (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

+0.575

10 periods · Return correlation when both series rose

Both Falling

+0.740

11 periods · Return correlation when both series fell

Diverging

-0.641

14 periods · Return correlation when series moved apart

R-Squared

77.4%

Share of variance in one series explained by the other.

Trend Agreement

63.9%

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: [0.867, 0.892]

Scatter

XY Regression

4.920406080100120140157.822100200300400443ATI Inc.Micron Technology, Inc.Data pointsFit (r = 0.88)

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

ATI logo

ATI Inc.

ATI

Market cap 20.2B · 7,600 employees

Stock · 1,254 raw → 1,254 prepared

Series B

MU logo

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

28

Estimated crossover points between normalized spreads.

Slope

2.2426

Linear regression slope.

Intercept

-4.8410

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 7 hours ago · ID: stock-ati-vs-stock-mu-daily