SeriesMagCorrOverlapThrough
These move together about 68% of the time
Very strong positive
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
Vanguard S&P 500 ETF
VOO
What to Watch
Tighter in drawdowns
Pair moves more tightly when both fall (+49%) than when both rise (+27%) — typical risk-off behaviour.
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
+89%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with Vanguard S&P 500 ETF 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
+89%
Pearson correlation
95% CI
+87% → +90%
Likely range
R²
78.5%
Variance explained
Trend agreement
68.5%
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.
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
+27%
106 periods · Return correlation when both series rose
Both Falling
+49%
97 periods · Return correlation when both series fell
Diverging
-61%
46 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
Vanguard S&P 500 ETF
VOO
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
3.3518
Linear regression slope.
Intercept
261.3611
Linear regression intercept.
Saved 1 hour ago · ID: stock-ual_stock-voo_5y
VOO
Vanguard S&P 500 ETF
Strongest positive