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Correlation
of values
+71%
In sync
of periods
63%
History
daysdays · through 2026-07-02
745
These move in the same direction about 63% of the time
When one swings, the other often swings by a similar amount (~51% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Unusual right now
Recently tighter than usual — the pair is behaving differently than its long-run pattern.
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
63%
Headline metric
Movement correlation(i)
+71%
Based on values
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
745 paired data points survived the daily window.
Raw input
785
11,660
Normalized
785
11,660
Prepared
785
11,660
Aligned
745
745
Invalid removed
51%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
745
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: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+71%
No shift — both series at their actual dates.
745 overlapping points at this shift
Baseline
+71%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+71%
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
+65%
79 periods · Return correlation when both series rose
Both Falling
+43%
93 periods · Return correlation when both series fell
Diverging
-44%
64 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
10,955
A: 40 / B: 10915
Series A
ICE BofA US High Yield Index Effective Yield
BAMLH0A0HYM2EY
FRED · 785 raw → 785 prepared
Series B
USD/ZAR Exchange Rate
DEXSFUS
FRED · 11,660 raw → 11,660 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
48
Estimated crossover points between normalized spreads.
Slope
0.9542
Linear regression slope.
Intercept
10.9270
Linear regression intercept.
Saved 3 months ago · ID: fred-bamlh0a0hym2ey_fred-dexsfus_daily_5y