Tech billionaire Elon Musk on Wednesday expressed regret over several social media posts he made about United States President Donald Trump last week, following a heated public clash that ended their once-close alliance.

The fallout marks the collapse of a partnership that had seen Musk appointed to lead the Department of Government Efficiency under Trump’s second administration.

Their rift has sparked investor concerns about the potential impact on Musk’s major ventures, including Tesla and SpaceX, given his previous influence within the administration’s cost-cutting agenda.

“I regret some of my posts about President @realDonaldTrump last week. They went too far,” Musk said on the X social media platform.

The conflict between Elon Musk and President Trump reportedly erupted over Musk’s opposition to the Trump-backed “One Big Beautiful Bill Act”, a sweeping tax and spending package.

In a CBS interview, Musk criticized the bill, saying it “undermines” the mission DOGE—which he had been leading—by expanding federal spending in ways that would “substantially increase the U.S. budget deficit.”

He reinforced his criticism on social media, further escalating tensions.

The Trump administration has rejected Musk’s claims, arguing that the bill includes targeted investments and tax reforms designed to boost economic growth without worsening the deficit.

The feud between Elon Musk and President Trump played out publicly on their respective platforms—X and Truth Social—intensifying an already volatile dispute.

During the exchange, Trump threatened to revoke federal contracts and subsidies granted to Musk’s companies, including Tesla and SpaceX, raising alarms about the potential financial and operational fallout.

Despite the escalating rhetoric, Trump signaled a partial olive branch on Monday, stating he planned to retain Starlink, the satellite internet service developed by SpaceX, for use at the White House