Correlation Analysis
BERKSHIRE HATHAWAY Class B vs DGS2
BRK.B vs DGS2
+0.444
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
DGS2
DGS2
Time Series
Relative Performance
Who Moves First
DGS2 leads BRK.B by 6 days
DGS2 tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.447 (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
-0.016
14 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.821
17 periods · Return correlation when series moved apart
R-Squared
19.7%
Share of variance in one series explained by the other.
Trend Agreement
49.9%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,244
Deep shared window — 1,244 usable pairs.
Significance
p < 0.001
95% CI: [0.398, 0.488]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,244 paired data points survived the daily window.
Raw input
1,254
12,457
Normalized
1,254
12,457
Prepared
1,254
12,457
Aligned
1,244
1,244
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
11,223
A: 10 / B: 11213
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
DGS2
FRED · 12,457 raw → 12,457 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.0080
Linear regression slope.
Intercept
0.3592
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-fred-dgs2-daily-20260408-bw2bjs