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Correlation
of values
+79%
In sync
of periods
48%
History
monthsmonths · through 2026-04
376
These move in the same direction about 48% of the time
When one swings, the other often swings by a similar amount (~63% 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
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
Advanced
Statistics
In sync(i)
47.8%
Headline metric
Movement correlation(i)
+79%
Based on values
95% CI
+75% → +83%
Likely range of correlation
Pipeline
Pipeline Summary
376 paired data points survived the monthly window.
Raw input
808
7,882
Normalized
808
7,882
Prepared
808
378
Aligned
376
376
Invalid removed
R²(i)
63.0%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
376
Robust
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: -18 to 18 months.
Selected shift
No shift
Correlation at this shift
+79%
No shift — both series at their actual dates.
376 overlapping points at this shift
Baseline
+79%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+79%
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
+66%
39 periods · Return correlation when both series rose
Both Falling
+32%
29 periods · Return correlation when both series fell
Diverging
-54%
69 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
434
A: 432 / B: 2
Series A
Bank Reserves
TOTRESNS
FRED · 808 raw → 808 prepared
Series B
USD/BRL Exchange Rate
DEXBZUS
FRED · 7,882 raw → 378 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.0009
Linear regression slope.
Intercept
1.7269
Linear regression intercept.
Saved last month · ID: fred-dexbzus_fred-totresns_monthly_5y