Largest companies by operating income

Companies ranked by operating income, in USD
Rank	Company	Operating income	Sector	Industry	Country	Exchange
1	STLDSteel Dynamics, Inc.	$2.06B	Basic Materials	Building Materials & Metals	United States	Nasdaq
2	CENXCentury Aluminum Co	$675M	Basic Materials	Building Materials & Metals	United States	Nasdaq
3	KALUKaiser Aluminum Corp	$341M	Basic Materials	Building Materials & Metals	United States	Nasdaq
4	ROCKGibraltar Industries, Inc.	$110M	Basic Materials	Building Materials & Metals	United States	Nasdaq
5	APOGApogee Enterprises, Inc.	$96.4M	Basic Materials	Building Materials & Metals	United States	Nasdaq
6	MATWMatthews International Corp	$69.8M	Basic Materials	Building Materials & Metals	United States	Nasdaq
7	NWPXNWPX Infrastructure, Inc.	$65.9M	Basic Materials	Building Materials & Metals	United States	Nasdaq
8	FRDFriedman Industries Inc	$39.6M	Basic Materials	Building Materials & Metals	United States	Nasdaq
9	SMIDSmith Midland Corp	$10.8M	Basic Materials	Building Materials & Metals	United States	Nasdaq
10	OCCOptical Cable Corp	$3.48M	Basic Materials	Building Materials & Metals	United States	Nasdaq

The world's largest companies by operating incomeMarket capRevenueOperating incomeCapital expenditureTotal assetsNet assetsCash on hand