Loading market view
Loading market view
Loading correlations
Coherent Corp. (COHR) vs PPI: All Commodities
Correlation
of % moves
+5%
In sync
of periods
58%
History
monthsmonths · through 2026-04
57
These move in the same direction about 58% of the time
Their swing sizes barely line up — almost no shared pattern.
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
PPI: All Commodities moves ~5 months before COHR
Watch PPI: All Commodities for an early read on COHR.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Flips between sync and inverse
Sometimes the two move together, sometimes opposite. Don't treat this as a stable signal.
Advanced
Statistics
In sync(i)
58.2%
Headline metric
Movement correlation(i)
+5%
Based on % moves
95% CI
-22% → +31%
Likely range of correlation
Pipeline
Pipeline Summary
57 paired data points survived the monthly window.
Raw input
1,207
1,360
Normalized
1,207
1,360
Prepared
58
1,360
Aligned
57
57
Invalid removed
R²(i)
0.2%
Variance explained
Significance
n.s.
Statistical confidence
Data points
57
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: -18 to 18 months.
Selected shift
-5 months
Correlation at this shift
+31%
+26% stronger than no-shift baseline
PPI: All Commodities shifted 5 months later. Reads: "Does Coherent Corp. (COHR) today line up with PPI: All Commodities 5 months ago?"
45 overlapping points at this shift
Baseline
+5%
No-shift correlation, matching the main time-series chart above.
Peak shift
-5 months
+31%
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
+39%
23 periods · Return correlation when both series rose
Both Falling
-59%
9 periods · Return correlation when both series fell
Diverging
-47%
23 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,304
A: 1 / B: 1303
Series A
Coherent Corp. (COHR)
COHR
Stock · 1,207 raw → 58 prepared
Series B
PPI: All Commodities
PPIACO
FRED · 1,360 raw → 1,360 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
2
Estimated crossover points between normalized spreads.
Slope
0.0047
Linear regression slope.
Intercept
0.0046
Linear regression intercept.
Saved 3 weeks ago · ID: fred-ppiaco_stock-cohr_monthly_5y