SeriesMagCorrOverlapThrough
These move opposite each other about 63% of the time
Strong inverse
Strong enough to use as a signal — read the stability and regime notes below before relying on it.
Chicago-based United Airlines is a major US network carrier with hubs in San Francisco, Chicago, Houston, Denver, Los Angeles, Newark, and Washington, D.C. United operates a hub-and-spoke system that is more focused on international and long-haul travel, especially across the Pacific, than its large US peers.
Market cap 29.3B · 115,600 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
Unusual right now
Recent correlation (+6%) is 2.5σ from the long-run average of -75% — pair is behaving differently than usual.
Holds across regimes
Correlation is similar when markets rise (-13%) 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
-75%
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
-75%
Pearson correlation
95% CI
-77% → -72%
Likely range
R²
56.2%
Variance explained
Trend agreement
62.6%
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
-13%
86 periods · Return correlation when both series rose
Both Falling
-1%
91 periods · Return correlation when both series fell
Diverging
-29%
72 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
United Airlines Holdings, Inc. Common Stock
UAL
Market cap 29.3B · 115,600 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
3
Estimated crossover points between normalized spreads.
Slope
-0.5343
Linear regression slope.
Intercept
74.7428
Linear regression intercept.
Saved 1 hour ago · ID: stock-siri_stock-ual_5y
SIRI
Sirius XM Holdings, Inc
Strongest positive