Correlation Analysis
Alphabet Inc. Class C Capital Stock vs Coherent Corp.
GOOG vs COHR
+0.191
Weak positive
When one moves up, the other tends to follow.
Alphabet Inc. Class C Capital Stock
↗GOOG
Alphabet is a holding company that wholly owns internet giant Google. The California-based company derives slightly less than 90% of its revenue from Google services, the vast majority of which is advertising sales. Alongside online ads, Google services houses sales stemming from Google's subscription services (YouTube TV and YouTube Music, among others), platforms (sales and in-app purchases on Play Store), and devices (Chromebooks, Pixel smartphones, and smart home products such as Chromecast). Google's cloud computing platform accounts for roughly 10% of Alphabet's revenue. The firm's investments in up-and-coming technologies such as self-driving cars (Waymo), health (Verily), and internet access (Google Fiber) make up the rest.
Market cap 3.6T · 190,820 employees
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
Time Series
Rebased to 100
Who Moves First
GOOG leads COHR by 6 days
GOOG tends to move before COHR.
Best correlation after shifting: +0.208 (13 shifts scanned)
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
+0.472
12 periods · Return correlation when both series rose
Both Falling
-0.390
7 periods · Return correlation when both series fell
Diverging
-0.534
16 periods · Return correlation when series moved apart
R-Squared
3.7%
Share of variance in one series explained by the other.
Trend Agreement
66.9%
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: [0.136, 0.245]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,207 paired observations survived the daily window.
Raw input
1,254
1,207
Normalized
1,254
1,207
Prepared
1,254
1,207
Aligned
1,207
1,207
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
47
A: 47 / B: 0
Series A
Alphabet Inc. Class C Capital Stock
GOOG
Market cap 3.6T · 190,820 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Coherent Corp.
COHR
Market cap 47.5B · 30,000 employees
Stock · 1,207 raw → 1,207 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
0.3045
Linear regression slope.
Intercept
77.0495
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
GOOG
Alphabet Inc. Class C Capital Stock
Highest
+0.948
Amphenol Corporation
APH · 1,254 observations
Lowest
-0.861
Fiserv, Inc. Common Stock
FISV · 644 observations
Saved 3 hours ago · ID: stock-goog-vs-stock-cohr-daily-20260408-j2jtmg