CorrlensCorrlens
Correlate

Correlation Analysis

Apple Inc. vs Nasdaq, Inc. Common Stock

AAPL vs NDAQ

+0.765

Strong positive

When one moves up, the other tends to follow.

AAPL logo

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

NDAQ logo

Nasdaq, Inc. Common Stock

NDAQ

Founded in 1971, Nasdaq is primarily known for its equity exchange, but in addition to its trading business (about 22.5% of sales), the company sells market and financial data to investors, offers Nasdaq-branded indexes, and lists companies through its capital access segment (42.5%). Nasdaq's newest segment, financial technology, was primarily constructed through the acquisitions of Verafin and Adenza and has expanded the company into capital management, financial crime, and regulatory compliance software (35%) as it seeks to become a diversified technology company.

Market cap 50B · 9,525 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 observationsStockStockTechnology

Time Series

Rebased to 100

Green: AAPLGray: NDAQ36 of 1,254 points (sampled)

Who Moves First

in sync

AAPL and NDAQ tend to move at the same time.

Best correlation after shifting: +0.765 (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

-0.235

13 periods · Return correlation when both series rose

Both Falling

+0.433

7 periods · Return correlation when both series fell

Diverging

-0.810

15 periods · Return correlation when series moved apart

R-Squared

58.6%

Share of variance in one series explained by the other.

Trend Agreement

63.2%

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: [0.741, 0.787]

Scatter

XY Regression

112.3120140160180200220240260280285.645.2506070809099.1Apple Inc.Nasdaq, Inc. Common StockData pointsFit (r = 0.765)

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

AAPL logo

Apple Inc.

AAPL

Market cap 3.8T

Stock · 1,254 raw → 1,254 prepared

Series B

NDAQ logo

Nasdaq, Inc. Common Stock

NDAQ

Market cap 50B · 9,525 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

23

Estimated crossover points between normalized spreads.

Slope

0.2556

Linear regression slope.

Intercept

18.4624

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-ndaq-daily-20260408-tsr1wn