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Correlation
of values
+42%
In sync
of periods
51%
History
daysdays · through 2026-05-15
3,232
These move in the same direction about 51% of the time
Their swing sizes loosely line up (~17% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Swings around
Their relationship swings around — sometimes tight, sometimes loose. Don't trust a single snapshot.
Advanced
Statistics
In sync(i)
51.1%
Headline metric
Movement correlation(i)
+42%
Based on values
95% CI
+39% → +45%
Likely range of correlation
Pipeline
Pipeline Summary
3,232 paired data points survived the daily window.
Raw input
3,247
11,628
Normalized
3,247
11,628
Prepared
3,247
11,628
Aligned
3,232
3,232
Invalid removed
R²(i)
17.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
3,232
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
+42%
No shift — both series at their actual dates.
3,232 overlapping points at this shift
Baseline
+42%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+42%
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%
64 periods · Return correlation when both series rose
Both Falling
-2%
60 periods · Return correlation when both series fell
Diverging
-44%
125 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
8,411
A: 15 / B: 8396
Series A
Overnight Reverse Repo
RRPONTSYD
FRED · 3,247 raw → 3,247 prepared
Series B
USD/ZAR Exchange Rate
DEXSFUS
FRED · 11,628 raw → 11,628 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
28
Estimated crossover points between normalized spreads.
Slope
0.0016
Linear regression slope.
Intercept
14.2106
Linear regression intercept.
Saved 2 weeks ago · ID: fred-dexsfus_fred-rrpontsyd_daily_5y