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Correlation
of % moves
+21%
In sync
of periods
58%
History
daysdays · through 2026-09-15
378
These move in the same direction about 58% of the time
Their swing sizes only faintly line up (~5% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
Both lines start at the same point — easy to compare when growth rates are similar.
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.
Swings around
Their relationship swings around — sometimes tight, sometimes loose. Don't trust a single snapshot.
Advanced
Statistics
In sync(i)
58%
Headline metric
Movement correlation(i)
+21%
Based on % moves
95% CI
+11% → +31%
Likely range of correlation
Pipeline
Pipeline Summary
378 paired data points survived the daily window.
Raw input
1,253
378
Normalized
1,253
378
Prepared
1,253
378
Aligned
378
378
Invalid removed
R²(i)
5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
377
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: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+21%
No shift — both series at their actual dates.
377 overlapping points at this shift
Baseline
+21%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+21%
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
+3%
75 periods · Return correlation when both series rose
Both Falling
+11%
80 periods · Return correlation when both series fell
Diverging
-42%
94 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
875
A: 875 / B: 0
Series A
Comfort Systems USA, Inc. (FIX)
FIX
Stock · 1,253 raw → 1,253 prepared
Series B
USA Rare Earth, Inc. Class A Common Stock (USAR)
USAR
Stock · 378 raw → 378 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.5038
Linear regression slope.
Intercept
-0.0025
Linear regression intercept.
Saved 4 months ago · ID: stock-fix_stock-usar_daily_5y