GOOG vs GOOGL: Correlation
How closely do Alphabet Inc. (Class C) (GOOG) and Alphabet Inc. (Class A) (GOOGL) trade together? Their weekly returns over three years give a correlation of 1.00, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GOOG and GOOGL?
Over the past 3 years, GOOG and GOOGL moved with a correlation of 1.00, which is very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 1.00 lands near the 3-year figure. Over 5 years the correlation is 1.00, and the annualized covariance of weekly returns is 974.0 %².
GOOGL is one of the assets that tracks GOOG most closely: it ranks #1 out of the 36 assets we track against GOOG. Their 12-month results are close: +62.7% for GOOG against +64.7% for GOOGL. The link looks structural: the rolling one-year correlation barely moved, holding between 1.00 and 1.00.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
GOOG vs GOOGL: side by side
| GOOG (Alphabet Inc. (Class C)) | GOOGL (Alphabet Inc. (Class A)) | |
|---|---|---|
| 1-year return | +62.7% | +64.7% |
| 5-year return | +134.2% | +137.7% |
| Volatility (ann.) | 31.1% | 31.4% |
| Beta vs S&P 500 | 1.20 | 1.22 |
| Max drawdown (3Y) | -29.4% | -29.8% |
| Market cap | $4,130.2B | $4,166.1B |
| P/E (trailing) | 17.0 | 17.2 |
| Dividend yield | 0.25% | 0.25% |
| Sector / category | Communication Services | Communication Services |
Year-by-year returns
| Year | GOOG | GOOGL |
|---|---|---|
| 2022 | -38.7% | -39.1% |
| 2023 | +58.8% | +58.3% |
| 2024 | +35.6% | +36.0% |
| 2025 | +65.4% | +66.0% |
| 2026 | +7.8% | +9.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GOOG and GOOGL good diversifiers for each other?
No: a correlation of 1.00 means GOOG and GOOGL tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between GOOG and GOOGL?
As of 2026-08-27, the correlation of weekly returns between GOOG and GOOGL is 1.00 over 3 years, 1.00 over 1 year and 1.00 over 5 years.
Is GOOGL a good diversifier for GOOG?
No: a correlation of 1.00 means GOOG and GOOGL tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 1.00 mean?
On the −1 to +1 scale, 1.00 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
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[](https://www.pairbook.io/pair/goog-vs-googl/)
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Hubs: GOOG correlations · GOOGL correlations
