Yesterday, Amazon’s market capitalization briefly surpassed $900 billion. The jump highlighted that Apple now has competition in the race to become the world’s first $1 trillion company. Market watchers have been patiently waiting for Apple to break the trillion-dollar threshold: It’s currently valued at just under $940 billion. After Amazon announced that it sold more than 100 million products during the latest Prime Day, the company’s shares hit $1,858.88 yesterday, giving Amazon a stock market value of $902 billion, according to Reuters. If Apple wants to maintain its title as the world’s most valuable listed company, it needs to watch its back. This year, Apple’s shares have increased by 13%, while Amazon’s are up a whopping 58%. Read more at Quartz.