Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Blackstone Inc.
BRK.B vs BX
+0.742
Strong 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
Blackstone Inc.
↗BX
Blackstone is the world's largest alternative-asset manager with $1.275 trillion in total assets under management, including $921.7 billion in fee-earning assets under management, at the end of 2025. The company operates with scale in each of its major product lines: private equity (26% of fee-earning AUM and 33% of base management fees), real estate/real assets (31% and 35%), credit and insurance (34% and 25%), and other alternatives (9% and 7%). While the firm primarily serves institutional investors (84% of AUM), it also caters to clients in the high-net-worth channel (16%). Blackstone operates through 25 offices in the Americas (8), Europe and the Middle East (9), and the Asia-Pacific region (8).
Market cap 87.2B · 5,285 employees
Time Series
Relative Performance
Who Moves First
BX leads BRK.B by 6 days
BX tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.743 (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
+0.101
13 periods · Return correlation when both series rose
Both Falling
+0.525
8 periods · Return correlation when both series fell
Diverging
-0.499
14 periods · Return correlation when series moved apart
R-Squared
55.1%
Share of variance in one series explained by the other.
Trend Agreement
64.5%
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: [0.716, 0.766]
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
Blackstone Inc.
BX
Market cap 87.2B · 5,285 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
0.2517
Linear regression slope.
Intercept
27.3309
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-bx-daily