Correlation Analysis
Amazon.Com Inc vs Boston Scientific Corp.
AMZN vs BSX
+0.806
Strong positive
When one moves up, the other tends to follow.
Amazon.Com Inc
↗AMZN
Amazon is the leading online retailer and marketplace for third party sellers. Retail related revenue represents approximately 74% of total, followed by Amazon Web Services (17%), and advertising services (9%). International segments constitute 22% of Amazon's total revenue, led by Germany, the United Kingdom, and Japan.
Market cap 2.3T
Boston Scientific Corp.
↗BSX
Boston Scientific produces less invasive medical devices that are inserted into the human body through small openings or cuts. It manufactures products for use in angioplasty, blood clot filtration, kidney stone management, cardiac rhythm management, catheter-directed ultrasound imaging, upper gastrointestinal tract diagnostics, interventional oncology, neuromodulation for chronic pain, and treatment of incontinence. The firm markets its devices to healthcare professionals and institutions globally. Foreign sales account for roughly 36% of the firm's total sales.
Market cap 93B · 59,000 employees
Time Series
Rebased to 100
Who Moves First
BSX leads AMZN by 6 days
BSX tends to move before AMZN.
Best correlation after shifting: +0.811 (13 shifts scanned)
Do They Crash Together?
Correlation by Market Regime
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
+0.275
17 periods · Return correlation when both series rose
Both Falling
+0.507
6 periods · Return correlation when both series fell
Diverging
-0.482
12 periods · Return correlation when series moved apart
R-Squared
64.9%
Share of variance in one series explained by the other.
Trend Agreement
59.4%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [0.785, 0.824]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired observations survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Amazon.Com Inc
AMZN
Market cap 2.3T
Stock · 1,254 raw → 1,254 prepared
Series B
Boston Scientific Corp.
BSX
Market cap 93B · 59,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
36
Estimated crossover points between normalized spreads.
Slope
0.4420
Linear regression slope.
Intercept
-9.1242
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-amzn-vs-stock-bsx-daily-20260408-j4x98j