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Correlation Analysis

Cisco Systems, Inc. Common Stock (DE) vs Eli Lilly & Co.

CSCO vs LLY

+0.545

Moderate positive

When one moves up, the other tends to follow.

CSCO logo

Cisco Systems, Inc. Common Stock (DE)

CSCO

Cisco Systems is the largest provider of networking equipment in the world and one of the largest software companies in the world. Its largest businesses are selling networking hardware and software (where it has leading market shares) and cybersecurity software such as firewalls. It also has collaboration products, like its Webex suite, and observability tools. It primarily outsources its manufacturing to third parties and has a large sales and marketing staff—25,000 strong across 90 countries. Overall, Cisco employs 80,000 people and sells its products globally.

Market cap 317.7B

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: CSCOGray: LLY36 of 1,254 points (sampled)

Who Moves First

LLY leads CSCO by 6 days

LLY tends to move before CSCO.

After testing 13 timing shifts, the strongest relationship was +0.548 (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

+0.461

15 periods · Return correlation when both series rose

Both Falling

+0.721

5 periods · Return correlation when both series fell

Diverging

-0.343

15 periods · Return correlation when series moved apart

R-Squared

29.7%

Share of variance in one series explained by the other.

Trend Agreement

56.8%

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: [0.504, 0.582]

Scatter

XY Regression

41.25060708083.61142004006008001,0001,142Cisco Systems, Inc. Common Stock (DE)Eli Lilly & Co.Data pointsFit (r = 0.545)

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

CSCO logo

Cisco Systems, Inc. Common Stock (DE)

CSCO

Market cap 317.7B

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

7

Estimated crossover points between normalized spreads.

Slope

15.5962

Linear regression slope.

Intercept

-297.4303

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

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