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Correlation
of % moves
-10%
In sync
of periods
45%
History
daysdays · through 2026-05-11
81
These move opposite each other about 45% of the time
Their swing sizes only faintly mirror each other (~1% 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
IRM moves ~5 days before MRSH
Watch IRM 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.
Advanced
Statistics
In sync(i)
45.0%
Headline metric
Movement correlation(i)
-10%
Based on % moves
95% CI
-31% → +13%
Likely range of correlation
Pipeline
Pipeline Summary
81 paired data points survived the daily window.
Raw input
81
1,255
Normalized
81
1,255
Prepared
81
1,255
Aligned
81
81
Invalid removed
R²(i)
0.9%
Variance explained
Significance
n.s.
Statistical confidence
Data points
81
Thin
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
+25%
+15% stronger than no-shift baseline
IRM shifted 5 days later. Reads: "Does MRSH today line up with IRM 5 days ago?"
75 overlapping points at this shift
Baseline
-10%
No-shift correlation, matching the main time-series chart above.
Peak shift
-5 days
+25%
A non-zero peak suggests one series lines up better when shifted against the other.
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
+6%
20 periods · Return correlation when both series rose
Both Falling
+10%
16 periods · Return correlation when both series fell
Diverging
-48%
44 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,174
A: 0 / B: 1174
Series A
MRSH
Stock · 81 raw → 81 prepared
Series B
IRM
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
-0.1215
Linear regression slope.
Intercept
0.0042
Linear regression intercept.
Saved 2 days ago · ID: stock-irm_stock-mrsh_daily_5y