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Correlation
of % moves
-13%
In sync
of periods
46%
History
daysdays · through 2026-07-31
137
These move in the same direction about 46% of the time
Their swing sizes only faintly mirror each other (~2% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
ATCH moves ~5 days before MRSH
Watch ATCH for an early read on MRSH.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
46%
Headline metric
Movement correlation(i)
-13%
Based on % moves
95% CI
-30% → +4%
Likely range of correlation
Pipeline
Pipeline Summary
137 paired data points survived the daily window.
Raw input
137
619
Normalized
137
619
Prepared
137
619
Aligned
137
137
Invalid removed
R²(i)
2%
Variance explained
Significance
n.s.
Statistical confidence
Data points(i)
136
Usable
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
-5 days
Correlation at this shift
+24%
+10% stronger than no-shift baseline
AtlasClear Holdings, Inc. (ATCH) shifted 5 days later. Reads: "Does Marsh (MRSH) today line up with AtlasClear Holdings, Inc. (ATCH) 5 days ago?"
131 overlapping points at this shift
Baseline
-13%
No-shift correlation, matching the main time-series chart above.
Peak shift
-5 days
+24%
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
-5%
27 periods · Return correlation when both series rose
Both Falling
+4%
34 periods · Return correlation when both series fell
Diverging
-55%
75 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
482
A: 0 / B: 482
Series A
Marsh (MRSH)
MRSH
Stock · 137 raw → 137 prepared
Series B
AtlasClear Holdings, Inc. (ATCH)
ATCH
Stock · 619 raw → 619 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
18
Estimated crossover points between normalized spreads.
Slope
-0.3049
Linear regression slope.
Intercept
-0.0029
Linear regression intercept.
Saved 3 months ago · ID: stock-atch_stock-mrsh_daily_5y