When did AOS join the S&P 500?

A. O. Smith joined the S&P 500 index on 2017-07-26.

What sector is AOS in?

AOS is in the Industrials sector, Building Products industry.

AOS — A. O. Smith

Building Products · Industrials

Key Facts

Status	Active
Sector	Industrials
Industry	Building Products
Joined	2017-07-26
Tenure	8 yrs

A. O. Smith Corporation manufactures residential and commercial gas and electric water heaters, boilers, storage tanks, and water treatment products. The company operates through North America and Rest of World segments. The North America segment produces and sells a comprehensive line of residential and commercial gas and electric water heaters, boilers, and storage tanks. The Rest of World segment sells water treatment products in China, Europe, and India.

Industry Peers

ALLE BLDR CARR JCI LII MAS TT

Sector Peers

ADP ALLE AME AXON BA BLDR BR CARR CAT CHRW

S&P 500 Timeline

2017-07-26Joined S&P 500

Data source: Wikipedia · CC BY-SA 4.0 · Updated 2026-07-10