Correlation Analysis
Coherent Corp. vs Costco Wholesale Corp
COHR vs COST
-0.228
Light inverse
When one moves up, the other tends to move down.
Coherent Corp.
↗COHR
Coherent Corp is a vertically integrated manufacturing company that develops, manufactures, and markets lasers, transceivers, and other optical and optoelectronic devices, modules, and systems, as well as engineered materials, for use in the communications, industrial, instrumentation, and electronics markets. Its reporting segments are Datacenter Communications and Industrial. Its geographic areas are North America, Europe, China, Japan, and the rest of the world.
Market cap 47.5B · 30,000 employees
Costco Wholesale Corp
↗COST
Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices. As of its most recent fiscal year, Costco operated approximately 910 warehouses, serving more than 80 million members across its three geographic segments: Costco US (approximately 73% of total revenue), Costco Canada (13%), and Costco International (14%).Costco's core value proposition—quality products at unbeatable prices—has yielded consistently strong member renewal rates (93% in the US and Canada and nearly 90% internationally). About 55% of Costco's fiscal 2025 revenue came from its grocery offerings, and another 25% from general merchandise.
Market cap 451.9B
Time Series
Relative Performance
Who Moves First
COHR leads COST by 6 days
COHR tends to move before COST.
After testing 13 timing shifts, the strongest relationship was -0.241 (they moved in opposite directions).
Do They Crash Together?
Correlation by Market Regime
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
+0.037
13 periods · Return correlation when both series rose
Both Falling
+0.917
5 periods · Return correlation when both series fell
Diverging
-0.388
17 periods · Return correlation when series moved apart
R-Squared
5.2%
Share of variance in one series explained by the other.
Trend Agreement
57.7%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,207
Deep shared window — 1,207 usable pairs.
Significance
p < 0.001
95% CI: [-0.281, -0.174]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,207 paired data points survived the daily window.
Raw input
1,207
1,254
Normalized
1,207
1,254
Prepared
1,207
1,254
Aligned
1,207
1,207
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
47
A: 0 / B: 47
Series A
Coherent Corp.
COHR
Market cap 47.5B · 30,000 employees
Stock · 1,207 raw → 1,207 prepared
Series B
Costco Wholesale Corp
COST
Market cap 451.9B
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
-0.5355
Linear regression slope.
Intercept
755.6093
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-cohr-vs-stock-cost-daily