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Correlation
of % moves
+47%
In sync
of periods
65%
History
daysdays · through 2026-05-22
499
These move in the same direction about 65% of the time
Their swing sizes loosely line up (~22% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
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
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
64.9%
Headline metric
Movement correlation(i)
+47%
Based on % moves
95% CI
+40% → +53%
Likely range of correlation
Pipeline
Pipeline Summary
499 paired data points survived the daily window.
Raw input
730
1,253
Normalized
730
1,253
Prepared
730
1,253
Aligned
499
499
Invalid removed
R²(i)
21.8%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
499
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
+47%
No shift — both series at their actual dates.
498 overlapping points at this shift
Baseline
+47%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+47%
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
+9%
94 periods · Return correlation when both series rose
Both Falling
+34%
73 periods · Return correlation when both series fell
Diverging
-46%
82 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
985
A: 231 / B: 754
Series A
Ethereum (ETH)
ETH
Crypto · 730 raw → 730 prepared
Series B
State Street SPDR S&P 500 ETF Trust (SPY)
SPY
Stock · 1,253 raw → 1,253 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
15
Estimated crossover points between normalized spreads.
Slope
0.1124
Linear regression slope.
Intercept
0.0008
Linear regression intercept.
Saved 4 days ago · ID: crypto-eth_stock-spy_daily_5y