Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Roblox Corporation
BRK.B vs RBLX
+0.302
Light 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
Roblox Corporation
↗RBLX
Roblox operates a free-to-play online video game platform with nearly 150 million daily active users. This platform has spawned a virtual universe and a Roblox economy based on the Robux currency. The platform houses millions of games from a wide range of creators—spanning from young gamers themselves to professional development studios. Roblox offers creators the tools, publishing abilities, and platform for their games, enabling anyone to create a game. Creators earn money when gamers make optional in-game purchases within their games and by offering space for real-world advertising, and Roblox earns revenue primarily by taking a cut of these earnings.
Market cap 40.5B · 3,065 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads RBLX by 6 days
BRK.B tends to move before RBLX.
After testing 13 timing shifts, the strongest relationship was +0.309 (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
-0.391
10 periods · Return correlation when both series rose
Both Falling
+0.291
6 periods · Return correlation when both series fell
Diverging
-0.680
19 periods · Return correlation when series moved apart
R-Squared
9.1%
Share of variance in one series explained by the other.
Trend Agreement
54.3%
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: [0.251, 0.352]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points 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
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
Roblox Corporation
RBLX
Market cap 40.5B · 3,065 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
0.1019
Linear regression slope.
Intercept
20.7258
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-rblx-daily