First public trillion dollar company, right? Source: http://www.visualcapitalist.com/most-valuable-companies-all-...
Regardless of inflation adjusted or not, Dutch East India shouldn't be considered given their rampant use of slave labor. doing a lot of business off of slave trade (pretty easy to make money when you're kidnapping people and sailing them across an ocean then selling them), having a nearly absolute monopoly, and uh... being government backed.