In 2007, PetroChina Company's market cap surpassed the $1-trillion mark though the Chinese company's complex structure ensured that most of the shares stayed with the government, The Wall Street Journal reported.
It crossed the line at 16:40 BST before falling back slightly.
Ben Barringer, an equity research analyst at Quilter Cheviot, said Amazon still has a long to way go, which means it could end up bigger then Apple.
The firm is expected to account for roughly half of all online shopping sales in the USA this year - and almost 5 percent of the country's overall retail market, according to research firm eMarketer.
One of Amazon's revenue drivers is its Prime subscription service which offers streaming video and music, free delivery and other perks and which has more than 100 million members worldwide.
Novak Djokovic tames heat and Joao Sousa to make quarters
Prior to this match Federer had not lost a set as he he continues his chase for a sixth US Open triumph and 21st grand slam title. But Keys struck once more with a flurry of winners at 3-3, overpowering Cibulkova in that game to reclaim her break advantage.
Nick Kyrgios can learn a valuable lesson from Roger Federer
The third round was the end of the line for men's and women's fourth seeds from Germany - Alexander Zverev and Angelique Kerber. The former world number one is determined to reclaim the top spot and has defied age since returning from injury a year ago .
Probe JD.com CEO over sexual misconduct accusation
China's foreign ministry said on Monday that its consulate in Chicago was closely following developments in the case. The company did not immediately provide further details, and Liu could not immediately be reached by Reuters.
It's official: Amazon is the second USA company to achieve a valuation of more than $1 trillion.
Achieving the valuation marks the latest chapter in an astonishing story of growth for the company, founded by businessman Jeff Bezos in Seattle, Washington, in 1994.
Amazon has briefly become the second US-listed firm to have a market value of more than $1 trillion (£779bn). The company's valuation has been teasing around the $1 trillion for a little while now, though all of that wait finally finished once the share price hit $2050.50.
'The difference between the two is that Amazon has room to grow within its two main businesses.
"We continue to aspire to be Earth's most customer-centric company, and we recognize this to be no small or easy challenge".