SeriesMagCorrOverlapThrough
These move together about 64% of the time
Moderate positive
A real but noisy link — useful as context, risky as a standalone signal.
Apple is among the largest companies in the world, with a broad portfolio of hardware and software products targeted at consumers and businesses. Apple's iPhone makes up a majority of the firm sales, and Apple's other products like Mac, iPad, and Watch are designed around the iPhone as the focal point of an expansive software ecosystem. Apple has progressively worked to add new applications, like streaming video, subscription bundles, and augmented reality. The firm designs its own software and semiconductors while working with subcontractors like Foxconn and TSMC to build its products and chips. Slightly less than half of Apple's sales come directly through its flagship stores, with a major
Market cap 3.9T · 166,000 employees
Shopify offers an e-commerce platform primarily to small and medium-size businesses. The firm has two segments. The subscription solutions segment allows Shopify merchants to conduct e-commerce on a variety of platforms, including the company's website, physical stores, pop-up stores, kiosks, social networks (Facebook), and Amazon. The merchant solutions segment offers add-on products for the platform that facilitate e-commerce and include Shopify Payments, Shopify Shipping, and Shopify Capital.
What to Watch
Holds across regimes
Correlation is similar when markets rise (+16%) and fall (+28%) — 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
+47%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with Shopify Inc. Class A subordinate voting shares 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
+47%
Pearson correlation
95% CI
+42% → +51%
Likely range
R²
21.7%
Variance explained
Trend agreement
64.0%
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 165.8B · 7,600 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
+16%
103 periods · Return correlation when both series rose
Both Falling
+28%
94 periods · Return correlation when both series fell
Diverging
-47%
52 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
Apple Inc.
AAPL
Market cap 3.9T · 166,000 employees
Stock · 1,255 raw → 1,255 prepared
Series B
Shopify Inc. Class A subordinate voting shares
SHOP
Market cap 165.8B · 7,600 employees
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
37
Estimated crossover points between normalized spreads.
Slope
0.4652
Linear regression slope.
Intercept
0.9708
Linear regression intercept.
Saved 3 hours ago · ID: stock-aapl_stock-shop_5y
SHOP
Shopify Inc. Class A subordinate voting shares
Strongest positive