SeriesMagCorrOverlapThrough
These move opposite each other about 59% of the time
Weak inverse
Weak relationship — not much actionable signal here beyond directional colour.
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 concentrate
Market cap 1T · 2,100,000 employees
One of the largest medical-device companies, Medtronic develops and manufactures therapeutic medical devices for chronic diseases. Its portfolio includes pacemakers, defibrillators, transcatheter heart valves, stents, spinal fixation devices, neurovascular products, advanced energy, ablation laser therapy, and surgical tools. The company primarily markets its products to healthcare institutions and physicians in the United States, Western Europe, and Japan. Foreign sales account for roughly 50% of the company's total sales.
What to Watch
Drifting from pattern
Recent correlation (+26%) is running 1.4σ away from the long-run average of -16%.
Holds across regimes
Correlation is similar when markets rise (-5%) and fall (-5%) — 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
-16%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with Medtronic plc 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
-16%
Pearson correlation
95% CI
-22% → -11%
Likely range
R²
2.6%
Variance explained
Trend agreement
58.9%
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 102.7B · 95,000 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
-5%
102 periods · Return correlation when both series rose
Both Falling
-5%
89 periods · Return correlation when both series fell
Diverging
-47%
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
Walmart Inc. Common Stock
WMT
Market cap 1T · 2,100,000 employees
Stock · 1,255 raw → 1,255 prepared
Series B
Medtronic plc
MDT
Market cap 102.7B · 95,000 employees
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
-0.0927
Linear regression slope.
Intercept
99.2916
Linear regression intercept.
Saved 2 hours ago · ID: stock-mdt_stock-wmt_5y