SeriesMagCorrOverlapThrough
These move together about 66% of the time
Moderate positive
A real but noisy link — useful as context, risky as a standalone signal.
FedEx pioneered overnight delivery in 1973 and remains the world's largest express package provider. In fiscal 2025, the firm's Federal Express segment—which houses the core package delivery operations—made up 86% of total revenue, with 10% coming from FedEx Freight, its asset-based less-than-truckload shipping segment. The remainder came from other services, including FedEx Office, which provides document production/shipping, and FedEx Logistics, which provides global forwarding. FedEx acquired Dutch parcel delivery firm TNT Express in 2016, boosting its presence across Europe. TNT was previously the fourth-largest global parcel delivery provider.
Market cap 92.6B · 880,000 employees
General Motors Co. emerged from the bankruptcy of General Motors Corp. (old GM) in July 2009. GM has eight brands and operates under three segments: GM North America, GM International, and GM Financial. The United States now has four brands instead of eight under old GM. The company regained its US market share leadership in 2022, after losing it to Toyota due to the chip shortage in 2021. 2025 US share was 17.4%, up 60 basis points from 2024. The Cruise autonomous vehicle arm, which GM now owns outright, previously operated driverless geofenced AV robotaxi services in San Francisco and other cities, but after a 2023 accident, GM decided that it will focus on personal AVs. GM Financial becam
What to Watch
Holds across regimes
Correlation is similar when markets rise (+34%) and fall (+35%) — reliable in both directions.
Regime-dependent
The correlation has flipped sign across time windows — not reliable as a standalone signal.
Time Series
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+65%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with General Motors Company at original dates
Indexed to 100 at start
Deep Dive
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Corr
+65%
Pearson correlation
95% CI
+61% → +68%
Likely range
R²
41.6%
Variance explained
Trend agreement
66.0%
Same-direction moves
Significance
p < 0.001
Statistical confidence
Data points
1,255
Deep
Pipeline
Pipeline Summary
1,255 paired data points survived the daily window.
Raw input
1,255
1,255
Normalized
1,255
1,255
Prepared
1,255
1,255
Aligned
1,255
1,255
Invalid removed
Explore
The strongest positive and inverse pairs we’ve saved for each side of this comparison — good jumping-off points if this result raised a question.
Market cap 70.3B · 156,000 employees
Do They Crash Together?
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
+34%
103 periods · Return correlation when both series rose
Both Falling
+35%
88 periods · Return correlation when both series fell
Diverging
-51%
58 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
FedEx Corporation
FDX
Market cap 92.6B · 880,000 employees
Stock · 1,255 raw → 1,255 prepared
Series B
General Motors Company
GM
Market cap 70.3B · 156,000 employees
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
34
Estimated crossover points between normalized spreads.
Slope
0.1938
Linear regression slope.
Intercept
-0.4552
Linear regression intercept.
Saved 1 hour ago · ID: stock-fdx_stock-gm_5y
GM
General Motors Company
Strongest positive