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Correlation Analysis

KLA Corporation Common Stock vs Eli Lilly & Co.

KLAC vs LLY

+0.875

Very strong positive

When one moves up, the other tends to follow.

KLAC logo

KLA Corporation Common Stock

KLAC

KLA is one of the largest semiconductor wafer fabrication equipment, or WFE, manufacturers in the world. It specializes in the market segment of semiconductor process control, wherein machines inspect semiconductor wafers during research and development and manufacturing for defects and verify precise measurements. In this section of the market, KLA holds a majority share. It also has a small exposure to the etch and deposition segments of the WFE market. It counts as top customers the largest chipmakers in the world, including TSMC and Samsung.

Market cap 201.9B · 15,200 employees

LLY logo

Eli Lilly & Co.

LLY

Eli Lilly is a drug firm with a focus on neuroscience, cardiometabolic, cancer, and immunology. Lilly's key products include Verzenio for cancer; Mounjaro, Zepbound, Jardiance, Trulicity, Humalog, and Humulin for cardiometabolic; and Taltz and Olumiant for immunology.

Market cap 828.2B · 50,000 employees

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

Time Series

Relative Performance

Green: KLACGray: LLY36 of 1,254 points (sampled)

Who Moves First

KLAC leads LLY by 5 days

KLAC tends to move before LLY.

After testing 13 timing shifts, the strongest relationship was +0.877 (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

+0.156

17 periods · Return correlation when both series rose

Both Falling

+0.803

6 periods · Return correlation when both series fell

Diverging

-0.657

12 periods · Return correlation when series moved apart

R-Squared

76.6%

Share of variance in one series explained by the other.

Trend Agreement

57.1%

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: [0.862, 0.888]

Scatter

XY Regression

2164006008001,0001,2001,4001,6001,6481142004006008001,0001,142KLA Corporation Common StockEli Lilly & Co.Data pointsFit (r = 0.875)

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

KLAC logo

KLA Corporation Common Stock

KLAC

Market cap 201.9B · 15,200 employees

Stock · 1,254 raw → 1,254 prepared

Series B

LLY logo

Eli Lilly & Co.

LLY

Market cap 828.2B · 50,000 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

48

Estimated crossover points between normalized spreads.

Slope

0.7704

Linear regression slope.

Intercept

99.2108

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

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