With a market capitalization (market cap) of $21.51B — a measure of how much the company is worth — Reliance Steel & Aluminum Co. is the 595th most valuable company in Basic Materials as of August 18, 2026. Shares trade at $421.40, down +1.55% on the day.
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Reliance Steel & Aluminum Co. (RS) operates as a premier diversified metal solutions provider and a leading metal service center, serving clients across the United States, Canada, and globally. The company provides an extensive inventory of approximately 100,000 metal products, including alloys, aluminum, brass, copper, carbon steel, stainless steel, titanium, and various specialty steels. Beyond distribution, it offers comprehensive metal processing services to diverse sectors such as general manufacturing, non-residential construction, transportation, aerospace, energy, electronics and semiconductor fabrication, and heavy industries. Additionally, RS supplies non-ferrous metals and tubular building products, while also manufacturing bespoke extruded metals, fabricated components, and welded parts. As of December 31, 2021, its network comprised about 315 facilities spread across 40 U.S. states and 13 other countries. The company directly sells its offerings to original equipment manufacturers, largely catering to small machine shops and fabricators. Founded in 1939, Reliance Steel & Aluminum Co. is headquartered in Los Angeles, California.
Visit websiteAs of August 18, 2026, Reliance Steel & Aluminum Co. (RS) is worth $21.51B — this is its market capitalization, the total value of all its outstanding shares.
Reliance Steel & Aluminum Co.’s market cap is $21.51B, which ranks it #595 among the most valuable companies in the Basic Materials sector tracked on MarketCapLens.
Reliance Steel & Aluminum Co. (RS) shares trade at $421.40, down 1.55% on the day, as of August 18, 2026.
Fundamentals are annual. Figures labeled with their fiscal year.
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Reliance Steel & Aluminum Co. trades at a price-to-earnings (P/E) ratio of 30.0, based on its latest share price and annual earnings per share.