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Correlation
of values
+66%
In sync
of periods
52%
History
weeksweeks · through 2026-27
156
These move in the same direction about 52% of the time
When one swings, the other often swings by a similar amount (~44% 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
Unusual right now
Recently looser 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)
52%
Headline metric
Movement correlation(i)
+66%
Based on values
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
156 paired data points survived the weekly window.
Raw input
2,884
784
Normalized
2,884
784
Prepared
2,884
157
Aligned
156
156
Invalid removed
44%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
156
Usable
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
+66%
No shift — both series at their actual dates.
156 overlapping points at this shift
Baseline
+66%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+66%
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
+24%
30 periods · Return correlation when both series rose
Both Falling
+7%
48 periods · Return correlation when both series fell
Diverging
-58%
77 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
2,729
A: 2728 / B: 1
Series A
30Y Mortgage Rate
MORTGAGE30US
FRED · 2,884 raw → 2,884 prepared
Series B
IG Bond Spread
BAMLC0A0CM
FRED · 784 raw → 157 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
12
Estimated crossover points between normalized spreads.
Slope
0.2758
Linear regression slope.
Intercept
-0.9171
Linear regression intercept.
Saved 3 months ago · ID: fred-bamlc0a0cm_fred-mortgage30us_weekly_5y