Correlation Analysis
Apple Inc. vs Digital Realty Trust, Inc.
AAPL vs DLR
+0.594
Moderate 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
Digital Realty Trust, Inc.
↗DLR
Digital Realty is one of the leading providers of cloud- and carrier-neutral data centers, offering colocation and interconnection services to hyperscalers and large businesses. Digital Realty operates 300 properties in 57 metropolitan areas across 31 countries, serving 5,000 customers. Renting physical space accounts for about 90% of Digital Realty's revenue. The firm enables hyperscalers and other clients to store servers, data, and networking equipment. The other 10% of revenue is generated primarily through interconnection services (8%) and other fee income (2%).
Market cap 62.5B · 4,282 employees
Who Moves First
in sync
AAPL and DLR tend to move at the same time.
Best correlation after shifting: +0.594 (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
+0.015
14 periods · Return correlation when both series rose
Both Falling
+0.257
7 periods · Return correlation when both series fell
Diverging
-0.468
14 periods · Return correlation when series moved apart
R-Squared
35.3%
Share of variance in one series explained by the other.
Trend Agreement
60.7%
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: [0.557, 0.629]
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
Digital Realty Trust, Inc.
DLR
Market cap 62.5B · 4,282 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
33
Estimated crossover points between normalized spreads.
Slope
0.3579
Linear regression slope.
Intercept
76.7329
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-aapl-vs-stock-dlr-daily-20260408-od46l1