Correlation Analysis
BERKSHIRE HATHAWAY Class B vs GlobalFoundries Inc. Ordinary Shares
BRK.B vs GFS
-0.809
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
GlobalFoundries Inc. Ordinary Shares
↗GFS
GlobalFoundries is a top-five contract semiconductor manufacturer globally. It was originally the manufacturing arm of Advanced Micro Devices before it was spun out in 2009. The foundry sells chips into a range of end markets including smartphones, PCs, Internet of Things, data centers, automotive, industrial, and so on, but primarily focuses on more mature process technologies. Until 2021, the firm was privately held by Mubadala Investment, the sovereign wealth fund of the United Arab Emirates, which remains its controlling shareholder today. GlobalFoundries merged with Chartered Semiconductor Manufacturing in 2009 and acquired IBM's chipmaking business in 2015. GF is headquartered in Malta, New York, and has about 13,000 staff.
Market cap 23.9B · 14,000 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads GFS by 6 days
BRK.B tends to move before GFS.
After testing 13 timing shifts, the strongest relationship was -0.823 (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
+0.040
11 periods · Return correlation when both series rose
Both Falling
+0.256
6 periods · Return correlation when both series fell
Diverging
-0.696
18 periods · Return correlation when series moved apart
R-Squared
65.4%
Share of variance in one series explained by the other.
Trend Agreement
60.7%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,113
Deep shared window — 1,113 usable pairs.
Significance
p < 0.001
95% CI: [-0.828, -0.787]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,113 paired data points survived the daily window.
Raw input
1,254
1,113
Normalized
1,254
1,113
Prepared
1,254
1,113
Aligned
1,113
1,113
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
141
A: 141 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
GlobalFoundries Inc. Ordinary Shares
GFS
Market cap 23.9B · 14,000 employees
Stock · 1,113 raw → 1,113 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
-0.1019
Linear regression slope.
Intercept
90.2497
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
GFS
GlobalFoundries Inc. Ordinary Shares
Highest
-0.197
Johnson & Johnson
JNJ · 1,113 data points
Lowest
-0.807
Mastercard Incorporated
MA · 1,113 data points
Saved 7 hours ago · ID: stock-brk-b-vs-stock-gfs-daily