Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Reddit, Inc.
BRK.B vs RDDT
+0.602
Moderate positive
When one moves up, the other tends to follow.
BERKSHIRE HATHAWAY Class B
↗BRK.B
Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis. Berkshire is expected to generate close to $375 billion in revenue in 2025.
Market cap 1T
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
Relative Performance
Who Moves First
RDDT leads BRK.B by 6 days
RDDT tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.617 (they moved in the same direction).
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
+0.606
10 periods · Return correlation when both series rose
Both Falling
+0.362
7 periods · Return correlation when both series fell
Diverging
-0.625
18 periods · Return correlation when series moved apart
R-Squared
36.3%
Share of variance in one series explained by the other.
Trend Agreement
48.7%
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: [0.544, 0.655]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
512 paired data points 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
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
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
24
Estimated crossover points between normalized spreads.
Slope
1.1140
Linear regression slope.
Intercept
-388.7621
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-rddt-daily