ALLY vs GM: Correlation
How closely do Ally Financial Inc. (ALLY) and General Motors (GM) trade together? Their weekly returns over three years give a correlation of 0.52, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ALLY and GM?
Over the past 3 years, ALLY and GM moved with a correlation of 0.52, which is moderate. Little has changed lately, as the 1-year reading of 0.47 lands near the 3-year figure. Over 5 years the correlation is 0.57, and the annualized covariance of weekly returns is 579.0 %².
Within ALLY's tracked universe of 14 assets, GM comes in at #9 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months GM outperformed by 40.9 percentage points (+7.1% for ALLY against +48.0% for GM).
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.
ALLY vs GM: side by side
| ALLY (Ally Financial Inc.) | GM (General Motors) | |
|---|---|---|
| 1-year return | +7.1% | +48.0% |
| 5-year return | -2.7% | +82.5% |
| Volatility (ann.) | 34.5% | 32.2% |
| Beta vs S&P 500 | 1.22 | 0.98 |
| Max drawdown (3Y) | -31.6% | -29.1% |
| Market cap | $13.0B | $77.9B |
| P/E (trailing) | 10.0 | 38.6 |
| Dividend yield | 2.82% | 0.76% |
| Sector / category | US Listed | Consumer Discretionary |
Year-by-year returns
| Year | ALLY | GM |
|---|---|---|
| 2022 | -46.9% | -42.4% |
| 2023 | +49.2% | +7.9% |
| 2024 | +6.4% | +49.8% |
| 2025 | +29.9% | +54.2% |
| 2026 | -3.6% | +6.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ALLY and GM good diversifiers for each other?
To a limited degree. At 0.52 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ALLY and GM?
As of 2026-08-27, the correlation of weekly returns between ALLY and GM is 0.52 over 3 years, 0.47 over 1 year and 0.57 over 5 years.
Is GM a good diversifier for ALLY?
To a limited degree. At 0.52 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.52 mean?
A reading of 0.52 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ally-vs-gm.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ally-vs-gm/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ALLY correlations · GM correlations
