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Correlation
of % moves
+35%
In sync
of periods
51%
History
daysdays · through 2026-05-22
591
These move in the same direction about 51% of the time
Their swing sizes only faintly line up (~12% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
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.
Swings around
Their relationship swings around — sometimes tight, sometimes loose. Don't trust a single snapshot.
Advanced
Statistics
In sync(i)
51.0%
Headline metric
Movement correlation(i)
+35%
Based on % moves
95% CI
+27% → +41%
Likely range of correlation
Pipeline
Pipeline Summary
591 paired data points survived the daily window.
Raw input
1,256
591
Normalized
1,256
591
Prepared
1,256
591
Aligned
591
591
Invalid removed
R²(i)
11.9%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
591
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
+35%
No shift — both series at their actual dates.
590 overlapping points at this shift
Baseline
+35%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+35%
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
-42%
72 periods · Return correlation when both series rose
Both Falling
+26%
63 periods · Return correlation when both series fell
Diverging
-10%
114 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
665
A: 665 / B: 0
Series A
iShares 20+ Year Treasury Bond ETF (TLT)
TLT
Stock · 1,256 raw → 1,256 prepared
Series B
Velo3D, Inc. Common stock (VELO)
VELO
Stock · 591 raw → 591 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
15
Estimated crossover points between normalized spreads.
Slope
2.2000
Linear regression slope.
Intercept
0.0033
Linear regression intercept.
Saved 2 weeks ago · ID: stock-tlt_stock-velo_daily_5y