Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Zimmer Biomet Holdings, Inc.
BRK.B vs ZBH
-0.706
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
Zimmer Biomet Holdings, Inc.
↗ZBH
Zimmer Biomet designs, manufactures, and markets orthopedic reconstructive implants as well as supplies and surgical equipment for orthopedic surgery. With the acquisitions of Centerpulse in 2003 and Biomet in 2015, Zimmer holds the leading share of the reconstructive market in the United States, Europe, and Japan. Roughly two-thirds of total revenue is derived from sales of large joints; another fourth comes from extremities, trauma, sports medicine, and related surgical products. The firm spun out its dental and spine businesses in 2022.
Market cap 17.6B · 17,000 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads ZBH by 6 days
BRK.B tends to move before ZBH.
After testing 13 timing shifts, the strongest relationship was -0.715 (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
+0.123
11 periods · Return correlation when both series rose
Both Falling
+0.124
9 periods · Return correlation when both series fell
Diverging
-0.363
15 periods · Return correlation when series moved apart
R-Squared
49.8%
Share of variance in one series explained by the other.
Trend Agreement
65.0%
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: [-0.733, -0.677]
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
Zimmer Biomet Holdings, Inc.
ZBH
Market cap 17.6B · 17,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
-0.1617
Linear regression slope.
Intercept
179.5885
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
BRK.B
BERKSHIRE HATHAWAY Class B
Highest
+0.968
Republic Services Inc.
RSG · 1,254 data points
Lowest
-0.918
United Parcel Service, Inc. Class B
UPS · 1,254 data points
ZBH
Zimmer Biomet Holdings, Inc.
Highest
-0.272
Johnson & Johnson
JNJ · 1,254 data points
Lowest
-0.753
Costco Wholesale Corp
COST · 1,254 data points
Saved 6 hours ago · ID: stock-brk-b-vs-stock-zbh-daily