SeriesMagCorrSyncOverlapThrough
Correlation
-29%
of % moves
In sync
36%
of periods
History
1,253
days · through 2026-04-30
These move opposite each other about 36% of the time
Their swing sizes only faintly mirror each other (~8% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
Time Series
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.
Mostly stable
The relationship drifts a little but stays in the same neighbourhood.
Advanced
Statistics
In sync(i)
36.0%
Headline metric
Movement correlation(i)
-29%
Based on % moves
95% CI
-34% → -24%
Likely range of correlation
Pipeline
Pipeline Summary
1,253 paired data points survived the daily window.
Raw input
1,255
9,176
Normalized
1,255
9,176
Prepared
1,255
9,176
Aligned
1,253
1,253
Invalid removed
Explore
R²(i)
8.5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,253
Deep
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
-29%
No shift — both series at their actual dates.
1,253 overlapping points at this shift
Baseline
-29%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-29%
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%
61 periods · Return correlation when both series rose
Both Falling
+9%
59 periods · Return correlation when both series fell
Diverging
-51%
129 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
7,925
A: 2 / B: 7923
Series A
BSX
Stock · 1,255 raw → 1,255 prepared
Series B
VIX
VIXCLS
FRED · 9,176 raw → 9,176 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
16
Estimated crossover points between normalized spreads.
Slope
-0.0664
Linear regression slope.
Intercept
23.5541
Linear regression intercept.
Saved 3 days ago · ID: fred-vixcls_stock-bsx_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.