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Correlation Analysis

Alphabet Inc. Class C Capital Stock vs Rocket Lab Corporation Common Stock

GOOG vs RKLB

+0.907

Very strong positive

When one moves up, the other tends to follow.

GOOG logo

Alphabet Inc. Class C Capital Stock

GOOG

Alphabet is a holding company that wholly owns internet giant Google. The California-based company derives slightly less than 90% of its revenue from Google services, the vast majority of which is advertising sales. Alongside online ads, Google services houses sales stemming from Google's subscription services (YouTube TV and YouTube Music, among others), platforms (sales and in-app purchases on Play Store), and devices (Chromebooks, Pixel smartphones, and smart home products such as Chromecast). Google's cloud computing platform accounts for roughly 10% of Alphabet's revenue. The firm's investments in up-and-coming technologies such as self-driving cars (Waymo), health (Verily), and internet access (Google Fiber) make up the rest.

Market cap 3.6T · 190,820 employees

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: GOOGGray: RKLB36 of 1,158 points (sampled)

Who Moves First

in sync

GOOG and RKLB tend to move at the same time.

Best correlation after shifting: +0.907 (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

+0.296

16 periods · Return correlation when both series rose

Both Falling

+0.606

10 periods · Return correlation when both series fell

Diverging

-0.291

9 periods · Return correlation when series moved apart

R-Squared

82.3%

Share of variance in one series explained by the other.

Trend Agreement

60.9%

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: [0.897, 0.917]

Scatter

XY Regression

73100150200250300332.4-1.902040608080.1Alphabet Inc. Class C Capital StockRocket Lab Corporation Common StockData pointsFit (r = 0.907)

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

GOOG logo

Alphabet Inc. Class C Capital Stock

GOOG

Market cap 3.6T · 190,820 employees

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

21

Estimated crossover points between normalized spreads.

Slope

0.3189

Linear regression slope.

Intercept

-33.7698

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-goog-vs-stock-rklb-daily-20260408-wxgx1q