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BERKSHIRE HATHAWAY Class B (BRK.B) vs USD/CAD Exchange Rate
Correlation
of % moves
-24%
In sync
of periods
43%
History
daysdays · through 2026-05-15
1,239
These move opposite each other about 43% of the time
Their swing sizes only faintly mirror each other (~6% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Slipping tighter
The recent pattern is tighter than its long-run baseline — keep an eye on whether this sticks.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Flips between sync and inverse
Sometimes the two move together, sometimes opposite. Don't treat this as a stable signal.
Advanced
Statistics
In sync(i)
43.3%
Headline metric
Movement correlation(i)
-24%
Based on % moves
95% CI
-29% → -19%
Likely range of correlation
Pipeline
Pipeline Summary
1,239 paired data points survived the daily window.
Raw input
1,255
13,891
Normalized
1,255
13,891
Prepared
1,255
13,891
Aligned
1,239
1,239
Invalid removed
R²(i)
5.9%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,239
Deep
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
-24%
No shift — both series at their actual dates.
1,238 overlapping points at this shift
Baseline
-24%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-24%
A non-zero peak suggests one series lines up better when shifted against the other.
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Do They Crash Together?
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
+13%
47 periods · Return correlation when both series rose
Both Falling
+9%
36 periods · Return correlation when both series fell
Diverging
-70%
166 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
12,668
A: 16 / B: 12652
Series A
BERKSHIRE HATHAWAY Class B (BRK.B)
BRK.B
Stock · 1,255 raw → 1,255 prepared
Series B
USD/CAD Exchange Rate
DEXCAUS
FRED · 13,891 raw → 13,891 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
-0.0897
Linear regression slope.
Intercept
0.0001
Linear regression intercept.
Saved 2 weeks ago · ID: fred-dexcaus_stock-brk.b_daily_5y