Correlation Analysis
BERKSHIRE HATHAWAY Class B vs IQVIA Holdings Inc.
BRK.B vs IQV
-0.479
Moderate 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
IQVIA Holdings Inc.
↗IQV
Iqvia is a global leader in clinical research and technology solutions for the life science industry. Formed in 2016 from the merger of Quintiles and IMS Health, it combined clinical trial services with extensive healthcare data and analytics. Its reserach and development solutions segment provides outsourced clinical development services spanning drug discovery, trial design, patient recruitment, site management, clinical testing, real-world studies, and the regulatory approval process. Its commercial solutions segment helps companies optimize product commercialization through analytics, technology, and outsourced sales and medical services. Together, Iqvia supports customers across the life science industry, and it serves biopharmaceutical firms, providers, payers, and policymakers.
Market cap 28.7B · 93,000 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads IQV by 6 days
BRK.B tends to move before IQV.
After testing 13 timing shifts, the strongest relationship was -0.497 (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
-0.156
12 periods · Return correlation when both series rose
Both Falling
+0.367
6 periods · Return correlation when both series fell
Diverging
-0.510
17 periods · Return correlation when series moved apart
R-Squared
22.9%
Share of variance in one series explained by the other.
Trend Agreement
63.0%
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: [-0.520, -0.435]
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
IQVIA Holdings Inc.
IQV
Market cap 28.7B · 93,000 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
-0.1600
Linear regression slope.
Intercept
275.8916
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-iqv-daily