Correlation Analysis
BERKSHIRE HATHAWAY Class B vs T Rowe Price Group Inc
BRK.B vs TROW
-0.605
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
T Rowe Price Group Inc
↗TROW
T. Rowe Price provides asset management services for individual and institutional investors. It offers a broad range of no-load US and international stock, hybrid, bond, and money market funds. At the end of 2025, the firm had $1.776 trillion in managed assets, composed of equity (49%), balanced (36%), fixed-income and money market (12%), and alternative (3%) offerings. Approximately two-thirds of managed assets are held in retirement-based accounts, which provides T. Rowe Price with a somewhat stickier client base than most of its peers. The firm also manages private accounts, provides retirement planning advice, and offers discount brokerage and trust services. The company is primarily a US-based asset manager, deriving less than 10% of its AUM from overseas.
Market cap 19.4B · 7,773 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads TROW by 4 days
BRK.B tends to move before TROW.
After testing 13 timing shifts, the strongest relationship was -0.606 (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
-0.213
11 periods · Return correlation when both series rose
Both Falling
+0.494
7 periods · Return correlation when both series fell
Diverging
-0.505
17 periods · Return correlation when series moved apart
R-Squared
36.6%
Share of variance in one series explained by the other.
Trend Agreement
70.0%
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: [-0.639, -0.568]
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
T Rowe Price Group Inc
TROW
Market cap 19.4B · 7,773 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
13
Estimated crossover points between normalized spreads.
Slope
-0.2512
Linear regression slope.
Intercept
220.4683
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-trow-daily