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Correlation Analysis

Apple Inc. vs Reddit, Inc.

AAPL vs RDDT

+0.687

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

R

Reddit, Inc.

RDDT

Reddit is a social media platform where users can engage in conversations, explore, and create communities centered around their interests. Founded in 2005 by Steve Huffman and Alexis Ohanian, Reddit has evolved into a vast network of user-generated content organized into specialized forums known as "subreddits." The platform's unique community-driven model relies on volunteer moderators to manage content and maintain subreddit guidelines. Reddit generates revenue through advertising, Premium Memberships, and data licensing agreements.

Market cap 26.4B · 2,555 employees

Mar 21, 2024 — Apr 7, 2026Daily512 observationsStockStockTechnology

Time Series

Rebased to 100

Green: AAPLGray: RDDT36 of 512 points (sampled)

Who Moves First

RDDT leads AAPL by 6 days

RDDT tends to move before AAPL.

Best correlation after shifting: +0.701 (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

+0.310

13 periods · Return correlation when both series rose

Both Falling

-0.108

6 periods · Return correlation when both series fell

Diverging

-0.493

16 periods · Return correlation when series moved apart

R-Squared

47.2%

Share of variance in one series explained by the other.

Trend Agreement

55.1%

How often both series moved in the same direction period-to-period.

Overlap Quality

512

Robust shared window — 512 usable pairs.

Significance

p < 0.001

95% CI: [0.638, 0.730]

Scatter

XY Regression

162.918020022024026028028626.150100150200250260.2Apple Inc.Reddit, Inc.Data pointsFit (r = 0.687)

Pipeline

Data quality details

Pipeline Summary

512 paired observations survived the daily window.

Raw input

1,254

512

Normalized

1,254

512

Prepared

1,254

512

Aligned

512

512

Invalid removed

0

A: 0 / B: 0

Duplicates removed

0

A: 0 / B: 0

Alignment drops

742

A: 742 / B: 0

Series A

AAPL logo

Apple Inc.

AAPL

Market cap 3.8T

Stock · 1,254 raw → 1,254 prepared

Series B

R

Reddit, Inc.

RDDT

Market cap 26.4B · 2,555 employees

Stock · 512 raw → 512 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

22

Estimated crossover points between normalized spreads.

Slope

1.5502

Linear regression slope.

Intercept

-218.0378

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-rddt-daily-20260408-s6lq6x