5 Biggest Steel Companies in the US

4. Cleveland-Cliffs Inc. (NYSE:CLF)         

Market Capitalization ($): 9.85 billion

Cleveland-Cliffs Inc. (NYSE:CLF) is like the king of flat-rolled steel in North America. They’ve been around since 1847 and have their hands in pretty much every part of the steel-making process. From iron ore pellets to stamping tools, they’ve got it covered. Plus, they’re the go-to steel supplier for the automotive industry in North America.

Moreover, Cleveland-Cliffs Inc. (NYSE:CLF) just dropped some major numbers for the year and the fourth quarter ending on December 31, 2023. We’re talking $22 billion in revenues, a whopping 16.4 million net tons of steel shipped out, including a record number heading to the auto sector. Also, cash flow from operations hit a cool $2.3 billion.