Correlation Analysis
Plains All American Pipeline, L.P. Common Units representing Limited Partner Interests vs Walmart Inc. Common Stock
PAA vs WMT
+0.829
Strong positive
When one moves up, the other tends to follow.
Plains All American Pipeline, L.P. Common Units representing Limited Partner Interests
↗PAA
Plains All American Pipeline LP, through its subsidiaries, engages in the pipeline transportation, terminaling, storage, and gathering of crude oil and natural gas liquids (NGL) in the United States and Canada. The company operates through two segments, Crude Oil and NGL. The Crude Oil segment offers gathering and transporting crude oil through pipelines, gathering systems, trucks, barges, or railcars. The NGL segment is involved in natural gas processing and NGL fractionation, storage, transportation, and terminalling. It generates the majority of its revenue from the Crude Oil segment.
Market cap 15.4B · 4,200 employees
Walmart Inc. Common Stock
↗WMT
Since its founding in 1962, Walmart has become the world's largest retailer, operating over 10,700 stores globally (including 4,600 namesake locations on its home turf and another 600 Sam's Club outlets) and growing its e-commerce presence, attracting 270 million customers weekly. In aggregate, the firm posted more than $680 billion in fiscal 2025 sales. Its core operations span three reporting segments: Walmart US (68% of fiscal 2025 sales), Walmart International (18%), and Sam's Club (14%). Within the US, nearly 60% of its $465 billion in fiscal 2025 revenue came from its grocery offerings, with another quarter from general merchandise. Internationally, Walmart's operations are concentrated in Mexico, though it also has budding exposure to India.
Market cap 1T
Time Series
Relative Performance
Who Moves First
in sync
PAA and WMT tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.829 (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
+0.198
15 periods · Return correlation when both series rose
Both Falling
N/A
3 periods · Return correlation when both series fell
Diverging
-0.722
17 periods · Return correlation when series moved apart
R-Squared
68.7%
Share of variance in one series explained by the other.
Trend Agreement
54.5%
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: [0.811, 0.845]
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
Plains All American Pipeline, L.P. Common Units representing Limited Partner Interests
PAA
Market cap 15.4B · 4,200 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Walmart Inc. Common Stock
WMT
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
5.9005
Linear regression slope.
Intercept
-19.6421
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
PAA
Plains All American Pipeline, L.P. Common Units representing Limited Partner Interests
Highest
+0.938
Eli Lilly & Co.
LLY · 1,254 data points
Lowest
+0.164
Johnson & Johnson
JNJ · 1,254 data points
Saved 6 hours ago · ID: stock-paa-vs-stock-wmt-daily