SeriesMagCorrOverlapThrough
These move together about 65% of the time
Very strong positive
Strong enough to use as a signal — read the stability and regime notes below before relying on it.
Alphabet is a holding company that wholly owns internet giant Google. The California-based company derives slightly less than 90% of its revenue from Google services, the vast majority of which is advertising sales. Alongside online ads, Google services houses sales stemming from Google's subscription services (YouTube TV and YouTube Music, among others), platforms (sales and in-app purchases on Play Store), and devices (Chromebooks, Pixel smartphones, and smart home products such as Chromecast). Google's cloud computing platform accounts for roughly 10% of Alphabet's revenue. The firm's investments in up-and-coming technologies such as self-driving cars (Waymo), health (Verily), and interne
Market cap 4.7T · 190,820 employees
American Express is a global financial institution, operating in about 130 countries, that provides consumers and businesses charge and credit card payment products. The company also operates a highly profitable merchant payment network. It operates in four segments: US consumer services, US commercial services, international card services, and global merchant and network services. In addition to payment products, the company's commercial business offers expense management tools, consulting services, and business loans.
What to Watch
Holds across regimes
Correlation is similar when markets rise (+27%) and fall (+32%) — reliable in both directions.
Mostly stable
Correlation drifts a little but stays in the same neighbourhood.
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
+87%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with American Express Company 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
+87%
Pearson correlation
95% CI
+86% → +88%
Likely range
R²
76.1%
Variance explained
Trend agreement
65.4%
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 217.6B · 76,800 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
+27%
100 periods · Return correlation when both series rose
Both Falling
+32%
86 periods · Return correlation when both series fell
Diverging
-52%
63 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
Alphabet Inc. Class A Common Stock
GOOGL
Market cap 4.7T · 190,820 employees
Stock · 1,255 raw → 1,255 prepared
Series B
American Express Company
AXP
Market cap 217.6B · 76,800 employees
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
32
Estimated crossover points between normalized spreads.
Slope
1.0049
Linear regression slope.
Intercept
59.0547
Linear regression intercept.
Saved 2 hours ago · ID: stock-axp_stock-googl_5y
AXP
American Express Company
Strongest positive