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.
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
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
Time Series
Rebased to 100
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
Pipeline
Data quality details
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
Alphabet Inc. Class C Capital Stock
GOOG
Market cap 3.6T · 190,820 employees
Stock · 1,254 raw → 1,254 prepared
Series B
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
GOOG
Alphabet Inc. Class C Capital Stock
Highest
+0.948
Amphenol Corporation
APH · 1,254 observations
Lowest
-0.861
Fiserv, Inc. Common Stock
FISV · 644 observations
RKLB
Rocket Lab Corporation Common Stock
Highest
+0.876
Broadcom Inc. Common Stock
AVGO · 1,158 observations
Lowest
+0.451
Exxon Mobil Corporation
XOM · 1,158 observations
Saved 3 hours ago · ID: stock-goog-vs-stock-rklb-daily-20260408-wxgx1q