Correlation Analysis
Apple Inc. vs Principal Financial Group, Inc.
AAPL vs PFG
+0.596
Moderate 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
Principal Financial Group, Inc.
↗PFG
Principal Financial Group Inc is a financial services provider. It offers various financial products and services including retirement, asset management, and workplace benefits and protection solutions to individuals and institutional clients. The company, along with its subsidiaries, operates in the following reportable segments; Retirement and Income Solutions, Principal Asset Management, and Benefits and Protection. Maximum revenue is generated from the Retirement and Income Solutions segment which provides workplace savings and retirement solutions, banking, trust and custodial services, individual variable annuities (including RILAs), pension risk transfer, and investment services to businesses, their employees, and other individuals.
Market cap 19.8B · 19,700 employees
Time Series
Rebased to 100
Who Moves First
in sync
AAPL and PFG tend to move at the same time.
Best correlation after shifting: +0.596 (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
-0.180
13 periods · Return correlation when both series rose
Both Falling
+0.509
6 periods · Return correlation when both series fell
Diverging
-0.664
16 periods · Return correlation when series moved apart
R-Squared
35.5%
Share of variance in one series explained by the other.
Trend Agreement
60.6%
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: [0.559, 0.631]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired observations 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
Apple Inc.
AAPL
Market cap 3.8T
Stock · 1,254 raw → 1,254 prepared
Series B
Principal Financial Group, Inc.
PFG
Market cap 19.8B · 19,700 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
27
Estimated crossover points between normalized spreads.
Slope
0.1192
Linear regression slope.
Intercept
54.9837
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
PFG
Principal Financial Group, Inc.
Highest
+0.788
Exxon Mobil Corporation
XOM · 1,254 observations
Lowest
+0.224
Tesla, Inc. Common Stock
TSLA · 1,254 observations
Saved 3 hours ago · ID: stock-aapl-vs-stock-pfg-daily-20260408-wfwpzp