AOS vs MAS: Correlation
Measured on weekly returns over the past three years, A. O. Smith (AOS) and Masco (MAS) carry a correlation of 0.64, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AOS and MAS?
On 3 years of weekly data the AOS/MAS correlation comes out at 0.64, strong. The relationship has been stable: the 1-year correlation (0.70) sits close to the 3-year figure. The 5-year figure is 0.65, and annualized covariance runs at 445.1 %².
By 3-year correlation, MAS places #7 of the 33 assets tracked against AOS. Over the last 12 months MAS came out ahead by 12.1 percentage points (-12.6% against -0.5%). The rolling one-year correlation moved between 0.51 and 0.76 over the past three years, a moderate range.
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.
AOS vs MAS: side by side
| AOS (A. O. Smith) | MAS (Masco) | |
|---|---|---|
| 1-year return | -12.6% | -0.5% |
| 5-year return | -6.7% | +29.1% |
| Volatility (ann.) | 23.5% | 29.6% |
| Beta vs S&P 500 | 0.67 | 0.95 |
| Max drawdown (3Y) | -36.9% | -30.9% |
| Market cap | $8.4B | $14.4B |
| P/E (trailing) | 17.4 | 17.0 |
| Dividend yield | 2.27% | 1.71% |
| Sector / category | Industrials | Industrials |
Year-by-year returns
| Year | AOS | MAS |
|---|---|---|
| 2022 | -32.1% | -32.1% |
| 2023 | +46.7% | +46.6% |
| 2024 | -15.9% | +10.0% |
| 2025 | +0.1% | -10.9% |
| 2026 | -5.8% | +16.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AOS and MAS good diversifiers for each other?
Only partially. A correlation of 0.64 means AOS and MAS share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between AOS and MAS?
Using weekly returns as of 2026-08-27: 0.64 over 3 years, with 0.70 over the last year and 0.65 over 5 years.
Is MAS a good diversifier for AOS?
Only partially. A correlation of 0.64 means AOS and MAS share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.64 mean?
A reading of 0.64 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/aos-vs-mas.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/aos-vs-mas/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: AOS correlations · MAS correlations
