Jeff Bezos has denied Elon Musk's accusation that the Amazon.com Inc. founder informed "everyone" Donald Trump would lose the presidential election and that they should sell their SpaceX and Tesla Inc. stock.

"Nope. "100% not true," Bezos stated in a rare post on X, Musk's social networking platform. Musk then seemed to back down. "Well, then, I stand corrected," the Tesla and SpaceX CEO said on Thursday, adding a laughing emoji. 

It's the latest tit-for-tat between the world's two wealthiest people, whose companies compete in the commercial space market.  

Bezos created Blue Origin, a space tourism and exploration company, and is the executive chairman of Amazon, which is developing a rival satellite network known as Project Kuiper – though both ventures have lagged well behind Musk. Amazon is also the largest shareholder in Tesla's rival, Rivian Automotive Inc.

The public exchange occurs as Musk, who has spent more than $130 million on Trump and down-ballot Republicans in tough House elections, maintains a key position in Trump's inner circle. Tesla's stock has risen more than 30% since the November 5 election, boosting Musk's net worth to more than $340 billion, according to the Bloomberg Billionaires Index.

Musk's initial late-night message to his more than 200 million followers emphasized his close ties to Trump, claiming he learned about the Bezos rumors at Trump's Mar-a-Lago residence. 

Musk and Bezos have previously sparred. Blue Origin sued NASA in 2021 after the agency awarded SpaceX $2.9 billion to create a lunar lander. The two entrepreneurs have clashed before US regulators over celestial real estate for their satellite fleets.