Correlation Analysis
Apple Inc. vs Reddit, Inc.
AAPL vs RDDT
+0.687
Strong 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
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
Time Series
Rebased to 100
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
Pipeline
Data quality details
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
Apple Inc.
AAPL
Market cap 3.8T
Stock · 1,254 raw → 1,254 prepared
Series B
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