Correlation Analysis
Apple Inc. vs Becton, Dickinson and Co.
AAPL vs BDX
-0.643
Moderate inverse
When one moves up, the other tends to move down.
Apple Inc.
↗AAPL
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 majority of sales coming indirectly through partnerships and distribution.
Market cap 3.8T
Becton, Dickinson and Co.
↗BDX
Becton Dickinson is the world's largest manufacturer and distributor of medical surgical products, such as needles, syringes, and sharps-disposal units. The company also manufactures prefilled devices, diagnostic instruments, and reagents, as well as flow cytometry and cell-imaging systems. On a 2025 sales basis, following the spinoff, BD Medical Essentials represented 34% of revenue, the Interventional segment 28%, Connected Care 25%, and Biopharma 13%. International revenue accounts for 43% of the company's business.
Market cap 44.2B · 72,000 employees
Who Moves First
BDX leads AAPL by 6 days
BDX tends to move before AAPL.
Best correlation after shifting: -0.656 (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
-0.201
12 periods · Return correlation when both series rose
Both Falling
+0.053
9 periods · Return correlation when both series fell
Diverging
-0.661
14 periods · Return correlation when series moved apart
R-Squared
41.3%
Share of variance in one series explained by the other.
Trend Agreement
58.3%
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: [-0.674, -0.609]
Time Series
Rebased to 100
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
Apple Inc.
AAPL
Market cap 3.8T
Stock · 1,254 raw → 1,254 prepared
Series B
Becton, Dickinson and Co.
BDX
Market cap 44.2B · 72,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
-0.4394
Linear regression slope.
Intercept
316.3038
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-aapl-vs-stock-bdx-daily-20260408-meg2ym