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Robinhood Markets, Inc. Class A Common Stock (HOOD) vs iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX)
Correlation
of % moves
-42%
In sync
of periods
32%
History
daysdays · through 2026-05-28
1,213
These move in the same direction about 32% of the time
Their swing sizes loosely mirror each other (~18% of the pattern is shared).
Strong enough to use as a signal — check the stability and regime notes below before relying on it.
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)
32.1%
Headline metric
Movement correlation(i)
-42%
Based on % moves
95% CI
-47% → -38%
Likely range of correlation
Pipeline
Pipeline Summary
1,213 paired data points survived the daily window.
Raw input
1,213
1,254
Normalized
1,213
1,254
Prepared
1,213
1,254
Aligned
1,213
1,213
Invalid removed
R²(i)
18.0%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,213
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
-42%
No shift — both series at their actual dates.
1,212 overlapping points at this shift
Baseline
-42%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-42%
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
-13%
21 periods · Return correlation when both series rose
Both Falling
-16%
30 periods · Return correlation when both series fell
Diverging
-19%
102 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
41
A: 0 / B: 41
Series A
Robinhood Markets, Inc. Class A Common Stock (HOOD)
HOOD
Stock · 1,213 raw → 1,213 prepared
Series B
iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX)
VXX
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
-0.3892
Linear regression slope.
Intercept
-0.0022
Linear regression intercept.
Saved 3 weeks ago · ID: stock-hood_stock-vxx_daily_5y