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Correlation Analysis

Alphabet Inc. Class C Capital Stock vs ResMed Inc.

GOOG vs RMD

+0.375

Light positive

When one moves up, the other tends to follow.

GOOG logo

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

RMD logo

ResMed Inc.

RMD

ResMed is one of the largest respiratory care device companies globally, primarily developing and supplying flow generators, masks and accessories for the treatment of sleep apnea. Increasing diagnosis of sleep apnea combined with ageing populations and increasing prevalence of obesity is resulting in a structurally growing market. The company earns roughly two thirds of its revenue in the Americas and the balance across other regions dominated by Europe, Japan and Australia. Recent developments and acquisitions have focused on digital health as ResMed is aiming to differentiate itself through the provision of clinical data for use by the patient, medical care advisor and payer in the out-of-hospital setting.

Market cap 32.8B · 10,600 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 observationsStockStockTechnology

Time Series

Rebased to 100

Green: GOOGGray: RMD36 of 1,254 points (sampled)

Who Moves First

RMD leads GOOG by 6 days

RMD tends to move before GOOG.

Best correlation after shifting: +0.383 (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

+0.151

15 periods · Return correlation when both series rose

Both Falling

+0.714

7 periods · Return correlation when both series fell

Diverging

-0.605

13 periods · Return correlation when series moved apart

R-Squared

14.0%

Share of variance in one series explained by the other.

Trend Agreement

62.2%

How often both series moved in the same direction period-to-period.

Overlap Quality

1,254

Deep shared window — 1,254 usable pairs.

Significance

p < 0.001

95% CI: [0.326, 0.421]

Scatter

XY Regression

72.7100150200250300326.9124.8150200250300308.2Alphabet Inc. Class C Capital StockResMed Inc.Data pointsFit (r = 0.375)

Pipeline

Data quality details

Pipeline Summary

1,254 paired observations survived the daily window.

Raw input

1,254

1,254

Normalized

1,254

1,254

Prepared

1,254

1,254

Aligned

1,254

1,254

Invalid removed

0

A: 0 / B: 0

Duplicates removed

0

A: 0 / B: 0

Alignment drops

0

A: 0 / B: 0

Series A

GOOG logo

Alphabet Inc. Class C Capital Stock

GOOG

Market cap 3.6T · 190,820 employees

Stock · 1,254 raw → 1,254 prepared

Series B

RMD logo

ResMed Inc.

RMD

Market cap 32.8B · 10,600 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

17

Estimated crossover points between normalized spreads.

Slope

0.2156

Linear regression slope.

Intercept

192.0703

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-goog-vs-stock-rmd-daily-20260408-mnju33