$3 trillion is the market capitalization Amazon crossed on Monday, with shares climbing to a new all-time high as a post-earnings rally extended into the new week. The threshold had not been reached before.
The milestone
Market cap is calculated as share price multiplied by total shares outstanding. Amazon's equity valuation crossing $3 trillion means that sum exceeded the figure at Monday's prices. The all-time high means the stock surpassed every prior peak on record, intraday and closing alike.
A market cap at this level places a company at the upper bound of publicly traded equity values. The $3 trillion figure is the reported fact; the source attributes Monday's move to a post-earnings surge still in progress.
The post-earnings dynamic
A stock described as "continuing" higher after earnings is behaving differently from one that spikes and retreats. The initial reaction to an earnings report often reflects surprise. A sustained run in the sessions that follow suggests the market has had time to absorb the results and has not found reason to sell. Amazon's stock exhibited that pattern, with the continuation landing the market cap above $3 trillion on Monday.
What the all-time high means
When a stock reaches an all-time high, no holder is sitting on a loss. Sellers who have been waiting to break even no longer have that motive. The result can be either further extension or a point where profit-taking accelerates. The source does not specify a share price or percentage gain. The reported fact is that Monday's session placed Amazon's market cap at $3 trillion and shares at a record.