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Correlation
of values
-73%
In sync
of periods
45%
History
monthsmonths · through 2026-05
59
These move in the same direction about 45% of the time
When one swings, the other often swings by a similar amount in the opposite direction (~54% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
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
Slipping tighter
The recent pattern is tighter than its long-run baseline — keep an eye on whether this sticks.
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)
45%
Headline metric
Movement correlation(i)
-73%
Based on values
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
59 paired data points survived the monthly window.
Raw input
809
1,806
Normalized
809
1,806
Prepared
809
61
Aligned
59
59
Invalid removed
54%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
59
Thin
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
-73%
No shift — both series at their actual dates.
59 overlapping points at this shift
Baseline
-73%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-73%
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
+19%
10 periods · Return correlation when both series rose
Both Falling
+2%
7 periods · Return correlation when both series fell
Diverging
-38%
41 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
752
A: 750 / B: 2
Series A
Housing Starts
HOUST
FRED · 809 raw → 809 prepared
Series B
Interest on Reserve Balances
IORB
FRED · 1,806 raw → 61 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
17
Estimated crossover points between normalized spreads.
Slope
-0.0100
Linear regression slope.
Intercept
18.0386
Linear regression intercept.
Saved 3 months ago · ID: fred-houst_fred-iorb_monthly_5y