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Correlation Analysis

F5, Inc. Common Stock vs Eli Lilly & Co.

FFIV vs LLY

+0.554

Moderate positive

When one moves up, the other tends to follow.

FFIV logo

F5, Inc. Common Stock

FFIV

F5 is a market leader in the application delivery controller market. The company sells products for security, application performance, and automation. Its three customer verticals are enterprises, service providers, and government entities. Revenue is evenly split between its services business and products business with revenue trending toward products due to software adoption. The Seattle-based firm was incorporated in 1996, and went public in 1999.

Market cap 17.4B · 6,578 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 pointsStockStockHealthcare

Time Series

Relative Performance

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

Who Moves First

LLY leads FFIV by 6 days

LLY tends to move before FFIV.

After testing 13 timing shifts, the strongest relationship was +0.564 (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

-0.027

17 periods · Return correlation when both series rose

Both Falling

N/A

3 periods · Return correlation when both series fell

Diverging

-0.629

15 periods · Return correlation when series moved apart

R-Squared

30.7%

Share of variance in one series explained by the other.

Trend Agreement

56.7%

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: [0.515, 0.591]

Scatter

XY Regression

127.3150200250300341.51142004006008001,0001,142F5, Inc. Common StockEli Lilly & Co.Data pointsFit (r = 0.554)

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

FFIV logo

F5, Inc. Common Stock

FFIV

Market cap 17.4B · 6,578 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

3

Estimated crossover points between normalized spreads.

Slope

2.8066

Linear regression slope.

Intercept

-8.9513

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 6 hours ago · ID: stock-ffiv-vs-stock-lly-daily