The first publicly traded company to reach a valuation of one trillion dollars was tech giant Apple in August 2018. It was also the first company to surpass the $2tn mark in August 2020. Four more companies based in the United States have since followed and surpassed a $1trn market cap.
There are also a couple of companies that have reached the trillion-dollar mark but have since deteriorated in performance or are unavailable for everyday traders to access, which we will discuss further on.