SeriesMagCorrSyncOverlapThrough
Correlation
+81%
of values
In sync
58%
of periods
History
662
weeks · through 2026-09
These move in the same direction about 58% of the time
When one swings, the other often swings by a similar amount (~65% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
Time Series
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
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)
58.0%
Headline metric
Movement correlation(i)
+81%
Based on values
95% CI
+78% → +83%
Likely range of correlation
Pipeline
Pipeline Summary
662 paired data points survived the weekly window.
Raw input
13,927
1,359
Normalized
13,927
1,359
Prepared
2,883
1,359
Aligned
662
662
Invalid removed
Explore
R²(i)
65.3%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
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: -12 to 12 weeks.
Selected shift
No shift
Correlation at this shift
+81%
No shift — both series at their actual dates.
662 overlapping points at this shift
Baseline
+81%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+81%
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
+37%
101 periods · Return correlation when both series rose
Both Falling
+52%
30 periods · Return correlation when both series fell
Diverging
-55%
118 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
2,918
A: 2221 / B: 697
Series A
NASDAQ Composite
NASDAQCOM
FRED · 13,927 raw → 2,883 prepared
Series B
PPI: All Commodities
PPIACO
FRED · 1,359 raw → 1,359 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.0101
Linear regression slope.
Intercept
108.7042
Linear regression intercept.
Saved 2 days ago · ID: fred-nasdaqcom_fred-ppiaco_5y
Explore
Top 5 by absolute correlation
Ranked across both sides of this comparison using the same dense row format as the single-symbol correlations view.