Correlation Analysis
American Electric Power Company, Inc. vs Exxon Mobil Corporation
AEP vs XOM
+0.510
Moderate positive
When one moves up, the other tends to follow.
American Electric Power Company, Inc.
↗AEP
American Electric Power is one of the largest regulated utilities in the United States, providing electricity generation, transmission, and distribution to more than 5 million customers in 11 states. About 39% of AEP's capacity is coal, with the remainder from a mix of natural gas (28%), renewable energy and hydro (23%), nuclear (7%), and demand response (3%). Vertically integrated utilities, transmission and distribution, and generation and marketing support earnings.
Market cap 71.9B · 17,581 employees
Exxon Mobil Corporation
↗XOM
ExxonMobil is an integrated oil and gas company that explores for, produces, and refines oil worldwide. In 2025, it produced 3.3 million barrels of liquids and 8.4 billion cubic feet of natural gas per day. At the end of 2024, reserves were 19.9 billion barrels of oil equivalent, 69% of which were liquids. The company is one of the world's largest refiners, with a total global refining capacity of 4.3 million barrels of oil per day, and is one of the world's largest manufacturers of commodity and specialty chemicals.
Market cap 680.7B
Time Series
Relative Performance
Who Moves First
in sync
AEP and XOM tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.510 (they moved in the same direction).
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
-0.131
9 periods · Return correlation when both series rose
Both Falling
+0.692
6 periods · Return correlation when both series fell
Diverging
-0.691
20 periods · Return correlation when series moved apart
R-Squared
26.0%
Share of variance in one series explained by the other.
Trend Agreement
54.3%
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: [0.468, 0.550]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points 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
American Electric Power Company, Inc.
AEP
Market cap 71.9B · 17,581 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Exxon Mobil Corporation
XOM
Market cap 680.7B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
23
Estimated crossover points between normalized spreads.
Slope
0.8954
Linear regression slope.
Intercept
16.3674
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
AEP
American Electric Power Company, Inc.
Highest
+0.797
Walmart Inc. Common Stock
WMT · 1,254 data points
Lowest
+0.550
Eli Lilly & Co.
LLY · 1,254 data points
Saved 4 hours ago · ID: stock-aep-vs-stock-xom-daily