SeriesMagCorrOverlapThrough
These move opposite each other about 61% of the time
Strong inverse
Strong enough to use as a signal — read the stability and regime notes below before relying on it.
McDonald's is the world's largest restaurant brand, with nearly $139 billion in systemwide sales across more than 45,000 restaurants and over 100 markets. The quick-service chain built its early reputation on speed, consistency, and affordable hamburgers, and today its global menu spans burgers, chicken, breakfast, and beverages that have helped popularize American fast-food cuisine worldwide. The firm derives the bulk of its revenue from franchise royalties and rent (about 62%), with the remainder stemming from company-operated restaurants across three segments: the United States (39% of systemwide sales), international operated markets (35%), and international developmental/licensed market
Market cap 206.3B · 150,000 employees
SiriusXM operates almost exclusively in the US through its SiriusXM and Pandora audio services. SiriusXM is primarily a satellite radio service that offers nationwide coverage and mostly ad-free listening, with proprietary channels and exclusive content. It makes agreements with automakers to install its radios in vehicles and give trial services to vehicle buyers, which have traditionally fed its subscriber base. The company provides the service via a fleet of geostationary satellites it owns and operates, and now offers a streaming SiriusXM option. Pandora, which accounts for a much smaller portion of revenue and profit, offers a subscription and ad-supported streaming music service that c
What to Watch
Drifting from pattern
Recent correlation (-24%) is running 1.5σ away from the long-run average of -80%.
Holds across regimes
Correlation is similar when markets rise (-4%) and fall (-1%) — 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
-80%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with Sirius XM Holdings, Inc 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
-80%
Pearson correlation
95% CI
-82% → -78%
Likely range
R²
63.9%
Variance explained
Trend agreement
60.8%
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 8.8B · 5,119 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
-4%
75 periods · Return correlation when both series rose
Both Falling
-1%
83 periods · Return correlation when both series fell
Diverging
-53%
91 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
McDonald's Corporation
MCD
Market cap 206.3B · 150,000 employees
Stock · 1,255 raw → 1,255 prepared
Series B
Sirius XM Holdings, Inc
SIRI
Market cap 8.8B · 5,119 employees
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
23
Estimated crossover points between normalized spreads.
Slope
-0.5213
Linear regression slope.
Intercept
187.0083
Linear regression intercept.
Saved 2 hours ago · ID: stock-mcd_stock-siri_5y
SIRI
Sirius XM Holdings, Inc
Strongest positive