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Correlation
of values
+60%
In sync
of periods
49%
History
weeksweeks · through 2026-36
522
These move in the same direction about 49% of the time
Their swing sizes loosely line up (~35% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Advanced
Statistics
In sync(i)
49%
Headline metric
Movement correlation(i)
+60%
Based on values
95% CI
+54% → +65%
Likely range of correlation
Pipeline
Pipeline Summary
522 paired data points survived the weekly window.
Raw input
2,512
1,875
Normalized
2,512
1,875
Prepared
523
1,875
Aligned
522
522
Invalid removed
R²(i)
35%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
522
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
+60%
No shift — both series at their actual dates.
522 overlapping points at this shift
Baseline
+60%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+60%
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
-4%
23 periods · Return correlation when both series rose
Both Falling
-14%
11 periods · Return correlation when both series fell
Diverging
-54%
30 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,354
A: 1 / B: 1353
Series A
S&P 500
SP500
FRED · 2,512 raw → 523 prepared
Series B
US Gas Price
GASREGW
FRED · 1,875 raw → 1,875 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
0.0003
Linear regression slope.
Intercept
1.9632
Linear regression intercept.
Saved 4 months ago · ID: fred-gasregw_fred-sp500_weekly_5y