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Correlation Analysis

Apple Inc. vs Rocket Lab Corporation Common Stock

AAPL vs RKLB

+0.753

Strong positive

When one moves up, the other tends to follow.

AAPL logo

Apple Inc.

AAPL

Apple is among the largest companies in the world, with a broad portfolio of hardware and software products targeted at consumers and businesses. Apple's iPhone makes up a majority of the firm sales, and Apple's other products like Mac, iPad, and Watch are designed around the iPhone as the focal point of an expansive software ecosystem. Apple has progressively worked to add new applications, like streaming video, subscription bundles, and augmented reality. The firm designs its own software and semiconductors while working with subcontractors like Foxconn and TSMC to build its products and chips. Slightly less than half of Apple's sales come directly through its flagship stores, with a majority of sales coming indirectly through partnerships and distribution.

Market cap 3.8T

RKLB logo

Rocket Lab Corporation Common Stock

RKLB

Rocket Lab Corp is engaged in space, building rockets, and spacecraft. It provides end-to-end mission services that provide frequent and reliable access to space for civil, defense, and commercial markets. It designs and manufactures the Electron and Neutron launch vehicles and Photon satellite platform. Rocket Lab's Electron launch vehicle has delivered multiple satellites to orbit for private and public sector organizations, enabling operations in national security, scientific research, space debris mitigation, Earth observation, climate monitoring, and communications. The business operates in two segments Launch Services and Space Systems. Geographically it serves Japan, and rest of the world and earns key revenue from the United States.

Market cap 38.5B · 2,600 employees

Aug 25, 2021 — Apr 7, 2026Daily1,158 observationsStockStockTechnology

Time Series

Rebased to 100

Green: AAPLGray: RKLB36 of 1,158 points (sampled)

Who Moves First

AAPL leads RKLB by 6 days

AAPL tends to move before RKLB.

Best correlation after shifting: +0.755 (13 shifts scanned)

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

-0.339

13 periods · Return correlation when both series rose

Both Falling

+0.599

10 periods · Return correlation when both series fell

Diverging

-0.464

12 periods · Return correlation when series moved apart

R-Squared

56.6%

Share of variance in one series explained by the other.

Trend Agreement

61.9%

How often both series moved in the same direction period-to-period.

Overlap Quality

1,158

Deep shared window — 1,158 usable pairs.

Significance

p < 0.001

95% CI: [0.727, 0.777]

Scatter

XY Regression

123.3140160180200220240260280286.5-1.902040608080.1Apple Inc.Rocket Lab Corporation Common StockData pointsFit (r = 0.753)

Pipeline

Data quality details

Pipeline Summary

1,158 paired observations survived the daily window.

Raw input

1,254

1,158

Normalized

1,254

1,158

Prepared

1,254

1,158

Aligned

1,158

1,158

Invalid removed

0

A: 0 / B: 0

Duplicates removed

0

A: 0 / B: 0

Alignment drops

96

A: 96 / B: 0

Series A

AAPL logo

Apple Inc.

AAPL

Market cap 3.8T

Stock · 1,254 raw → 1,254 prepared

Series B

RKLB logo

Rocket Lab Corporation Common Stock

RKLB

Market cap 38.5B · 2,600 employees

Stock · 1,158 raw → 1,158 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

33

Estimated crossover points between normalized spreads.

Slope

0.3945

Linear regression slope.

Intercept

-58.3504

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-rklb-daily-20260408-cf1eie