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Correlation
of values
-35%
In sync
of periods
50%
History
weeksweeks · through 2026-20
1,637
These move opposite each other about 50% of the time
Their swing sizes only faintly mirror each other (~13% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
On a log scale so equal % moves take equal vertical space — best when one series has grown much faster than the other.
What to Watch
Unusual right now
Recently tighter than usual — the pair is behaving differently than its long-run pattern.
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)
49.5%
Headline metric
Movement correlation(i)
-35%
Based on values
95% CI
-40% → -31%
Likely range of correlation
Pipeline
Pipeline Summary
1,637 paired data points survived the weekly window.
Raw input
2,878
7,868
Normalized
2,878
7,868
Prepared
2,878
1,637
Aligned
1,637
1,637
Invalid removed
R²(i)
12.5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,637
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: -12 to 12 weeks.
Selected shift
No shift
Correlation at this shift
-35%
No shift — both series at their actual dates.
1,637 overlapping points at this shift
Baseline
-35%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-35%
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
+4%
71 periods · Return correlation when both series rose
Both Falling
-17%
75 periods · Return correlation when both series fell
Diverging
-35%
103 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,241
A: 1241 / B: 0
Series A
30Y Mortgage Rate
MORTGAGE30US
FRED · 2,878 raw → 2,878 prepared
Series B
USD/BRL Exchange Rate
DEXBZUS
FRED · 7,868 raw → 1,637 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
19
Estimated crossover points between normalized spreads.
Slope
-0.3289
Linear regression slope.
Intercept
4.7271
Linear regression intercept.
Saved 2 weeks ago · ID: fred-dexbzus_fred-mortgage30us_weekly_5y