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Correlation
of values
+97%
In sync
of periods
57%
History
monthsmonths · through 2026-04
281
These move in the same direction about 57% of the time
When one swings, the other almost always swings by a closely matched amount (~93% 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
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
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)
57.5%
Headline metric
Movement correlation(i)
+97%
Based on values
95% CI
+96% → +97%
Likely range of correlation
Pipeline
Pipeline Summary
281 paired data points survived the monthly window.
Raw input
808
1,225
Normalized
808
1,225
Prepared
808
283
Aligned
281
281
Invalid removed
R²(i)
93.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
281
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
No shift
Correlation at this shift
+97%
No shift — both series at their actual dates.
281 overlapping points at this shift
Baseline
+97%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+97%
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
+82%
115 periods · Return correlation when both series rose
Both Falling
-24%
14 periods · Return correlation when both series fell
Diverging
-29%
89 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
529
A: 527 / B: 2
Series A
M2 Money Supply
M2SL
FRED · 808 raw → 808 prepared
Series B
Fed Balance Sheet
WALCL
FRED · 1,225 raw → 283 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
453.7708
Linear regression slope.
Intercept
-1845138.8581
Linear regression intercept.
Saved last month · ID: fred-m2sl_fred-walcl_monthly_5y