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Milwaukee, Wisconsin-based A. O. Smith Corporation (AOS) manufactures and markets residential and commercial gas and electric water heaters, boilers, heat pumps, tanks, and water treatment products in North America and internationally. Valued at a market capitalization of $11.1 billion, the company offers water heaters for residences, restaurants, hotels, office buildings, laundries, car washes, and small businesses, boilers, and water treatment products.
The company's shares have outperformed the broader market over the past year and in 2026. AOS stock has surged 20.2% over the past 52 weeks and 18.1% on a year-to-date (YTD) basis. In comparison, the S&P 500 Index ($SPX) has returned 12.3% over the past year and grown marginally in 2026.