Correlation Analysis
Apple Inc. vs Warner Bros. Discovery, Inc. Series A Common Stock
AAPL vs WBD
+0.392
Light positive
When one moves up, the other tends to follow.
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
Warner Bros. Discovery, Inc. Series A Common Stock
↗WBD
Warner Bros. Discovery operates in three segments: streaming, studios, and linear networks. The streaming business includes HBO Max, which is rapidly increasing its international footprint in addition to its major presence in the US. Studios include industry leaders in both film and television, which produce movies and television series that are monetized in multiple ways, including theatrical release, sales to third parties, and feeding into Warner's own platforms. Global networks consist of basic cable networks like CNN, TNT, TBS, Discovery, HGTV, and The Food Network. The Discovery+ streaming service will remain part of global networks.
Market cap 68.7B · 35,500 employees
Who Moves First
AAPL leads WBD by 6 days
AAPL tends to move before WBD.
Best correlation after shifting: +0.414 (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
+0.345
10 periods · Return correlation when both series rose
Both Falling
+0.379
11 periods · Return correlation when both series fell
Diverging
-0.699
14 periods · Return correlation when series moved apart
R-Squared
15.4%
Share of variance in one series explained by the other.
Trend Agreement
61.1%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,000
Deep shared window — 1,000 usable pairs.
Significance
p < 0.001
95% CI: [0.339, 0.444]
Time Series
Rebased to 100
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,000 paired observations survived the daily window.
Raw input
1,254
1,000
Normalized
1,254
1,000
Prepared
1,254
1,000
Aligned
1,000
1,000
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
254
A: 254 / B: 0
Series A
Apple Inc.
AAPL
Market cap 3.8T
Stock · 1,254 raw → 1,254 prepared
Series B
Warner Bros. Discovery, Inc. Series A Common Stock
WBD
Market cap 68.7B · 35,500 employees
Stock · 1,000 raw → 1,000 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
13
Estimated crossover points between normalized spreads.
Slope
0.0559
Linear regression slope.
Intercept
2.2718
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
AAPL
Apple Inc.
Highest
+0.935
Arista Networks
ANET · 1,254 observations
Lowest
-0.847
Fiserv, Inc. Common Stock
FISV · 644 observations
WBD
Warner Bros. Discovery, Inc. Series A Common Stock
Highest
+0.880
Johnson & Johnson
JNJ · 1,000 observations
Lowest
+0.077
Microsoft Corp
MSFT · 1,000 observations
Saved 3 hours ago · ID: stock-aapl-vs-stock-wbd-daily-20260408-3dva7u