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.
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
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
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
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
Apple Inc.
AAPL
Market cap 3.8T
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
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
AAPL
Apple Inc.
Highest
+0.935
Arista Networks
ANET · 1,254 observations
Lowest
-0.847
Fiserv, Inc. Common Stock
FISV · 644 observations
RKLB
Rocket Lab Corporation Common Stock
Highest
+0.907
Alphabet Inc. Class C Capital Stock
GOOG · 1,158 observations
Lowest
+0.451
Exxon Mobil Corporation
XOM · 1,158 observations
Saved 3 hours ago · ID: stock-aapl-vs-stock-rklb-daily-20260408-cf1eie