Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Dollar General Corp.
BRK.B vs DG
-0.868
Very strong inverse
When one moves up, the other tends to move down.
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
Dollar General Corp.
↗DG
Since its beginning in 1939, Dollar General has grown to become the largest dollar store operator in the United States, with more than 20,000 small-box discount stores across 48 states. The firm generated $40 billion in fiscal 2024 sales. The retailer maintains a heavy concentration of stores in rural and low-income markets underserved by big-box retailers. It's 11,000 stock-keeping units, including 2,000 priced at $1 or less, span consumables (82% of sales), seasonal items (10%), home products (5%), and apparel (3%). More than 20% of sales are derived from private label.
Market cap 27.5B · 194,000 employees
Time Series
Relative Performance
Who Moves First
DG leads BRK.B by 6 days
DG tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was -0.873 (they moved in opposite directions).
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
+0.260
10 periods · Return correlation when both series rose
Both Falling
+0.330
9 periods · Return correlation when both series fell
Diverging
-0.693
16 periods · Return correlation when series moved apart
R-Squared
75.4%
Share of variance in one series explained by the other.
Trend Agreement
57.5%
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: [-0.881, -0.854]
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
Dollar General Corp.
DG
Market cap 27.5B · 194,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
-0.6090
Linear regression slope.
Intercept
395.7685
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-dg-daily