Largest companies by operating income

Companies ranked by operating income, in USD

Company	Op. income (TTM)	Sector	Industry	Country	Exchange
1IQVIQVIA HOLDINGS INC.	$2.20B	Healthcare	Diagnostics & Research	United States	NYSE
2INCYINCYTE CORP	$1.78B	Healthcare	Diagnostics & Research	United States	Nasdaq
3IDXXIDEXX LABORATORIES INC /DE	$1.46B	Healthcare	Diagnostics & Research	United States	Nasdaq

U.S.-exchange common stocks; ADRs and funds excluded. 3 companies. Reported USD values. TTM means trailing twelve months; companies without a comparable value are excluded.