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.
ServiceNow Inc provides software solutions to structure and automate various business processes via a SaaS delivery model. The company primarily focuses on the IT function for enterprise customers. ServiceNow began with IT service management, expanded within the IT function, and more recently directed its workflow automation logic to functional areas beyond IT, notably customer service, HR service delivery, and security operations. ServiceNow also offers an application development platform as a service.
Market cap 93.3B · 29,187 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 (-11%) is running 1.6σ away from the long-run average of -68%.
Holds across regimes
Correlation is similar when markets rise (+2%) and fall (-10%) — 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
-68%
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
-68%
Pearson correlation
95% CI
-71% → -65%
Likely range
R²
46.7%
Variance explained
Trend agreement
60.9%
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 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
+2%
92 periods · Return correlation when both series rose
Both Falling
-10%
86 periods · Return correlation when both series fell
Diverging
-25%
71 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
SERVICENOW, INC.
NOW
Market cap 93.3B · 29,187 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
10
Estimated crossover points between normalized spreads.
Slope
-0.2920
Linear regression slope.
Intercept
81.6004
Linear regression intercept.
Saved 1 hour ago · ID: stock-now_stock-siri_5y
SIRI
Sirius XM Holdings, Inc
Strongest positive