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Correlation
of values
-62%
In sync
of periods
48%
History
monthsmonths · through 2026-05
662
These move in the same direction about 48% of the time
When one swings, the other often swings by a similar amount in the opposite direction (~38% 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
30Y Mortgage Rate moves ~18 months before Monetary Base
Watch 30Y Mortgage Rate for an early read on Monetary Base.
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
Advanced
Statistics
In sync(i)
48%
Headline metric
Movement correlation(i)
-62%
Based on values
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
662 paired data points survived the monthly window.
Raw input
2,884
809
Normalized
2,884
809
Prepared
664
809
Aligned
662
662
Invalid removed
38%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
662
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
+18 months
Correlation at this shift
-67%
+5% stronger than no-shift baseline
Monetary Base shifted 18 months earlier. Reads: "Does 30Y Mortgage Rate today line up with Monetary Base 18 months from now?"
644 overlapping points at this shift
Baseline
-62%
No-shift correlation, matching the main time-series chart above.
Peak shift
+18 months
-67%
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
-7%
9 periods · Return correlation when both series rose
Both Falling
-61%
7 periods · Return correlation when both series fell
Diverging
+13%
10 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
149
A: 2 / B: 147
Series A
30Y Mortgage Rate
MORTGAGE30US
FRED · 2,884 raw → 664 prepared
Series B
Monetary Base
BOGMBASE
FRED · 809 raw → 809 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
-363.8232
Linear regression slope.
Intercept
4320.8610
Linear regression intercept.
Saved 3 months ago · ID: fred-bogmbase_fred-mortgage30us_monthly_5y