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Correlation
of % moves
+39%
In sync
of periods
61%
History
monthsmonths · through 2026-07
30
These move in the same direction about 61% of the time
Their swing sizes only faintly line up (~15% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
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
ARKB moves ~10 months before US CPI
Watch ARKB for an early read on US CPI.
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)
61%
Headline metric
Movement correlation(i)
+39%
Based on % moves
95% CI
+2% → +67%
Pipeline
Pipeline Summary
30 paired data points survived the monthly window.
Raw input
954
667
Normalized
954
667
Prepared
954
33
Aligned
30
30
Invalid removed
Likely range of correlation
R²(i)
15%
Variance explained
Significance
p < 0.05
Statistical confidence
Data points(i)
28
Limited
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: -10 to 10 months.
Selected shift
-10 months
Correlation at this shift
+73%
+34% stronger than no-shift baseline
ARKB shifted 10 months later. Reads: "Does US CPI today line up with ARKB 10 months ago?"
10 overlapping points at this shift
Baseline
+39%
No-shift correlation, matching the main time-series chart above.
Peak shift
-10 months
+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
-11%
16 periods · Return correlation when both series rose
Both Falling
N/A
1 periods · Return correlation when both series fell
Diverging
-23%
11 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
927
A: 924 / B: 3
Series A
US CPI
CPIAUCSL
FRED · 954 raw → 954 prepared
Series B
ARKB
Stock · 667 raw → 33 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
4
Estimated crossover points between normalized spreads.
Slope
21.1369
Linear regression slope.
Intercept
-0.0318
Linear regression intercept.
Saved 2 weeks ago · ID: fred-cpiaucsl_stock-arkb_monthly_5y