The world's richest man, now firmly embedded in the Trump administration, has lost over $11 billion since the start of the year.

As Elon Musk and his billionaire brethren take power in Trump’s second term, the lack of legal guardrails — and the fading power of Big Media — is becoming an existential crisis.

The billionaire and his Silicon Valley associates landed in the capital and immediately moved to cut the size of the federal government, reprising the playbook he used after buying Twitter in 2022.

The richest man in the world is backing far-right parties against a political establishment that has failed to deliver.

ByteDance, TikTok’s parent company, is required to sell the app to a U.S.-based buyer or face a nationwide ban.

The assembly of billionaires at Trump's inauguration was a display of wealth and power unlike any before. The display was all the more remarkable given how recently many in tech were politically naive or apathetic.

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TikTok allows "the Chinese Communist Party access to Americans’ personal and proprietary information — potentially allowing China to track the locations of Federal employees and contractors, build dossiers of personal information for blackmail,

Altman and Musk were OpenAI’s founding co-chairs in 2015, but their relationship has devolved into name-calling and lawsuits.

Jamie Dimon, the billionaire head of the U.S.’ biggest bank, lauded Tesla CEO Elon Musk, the richest man on the planet and a key part of President Donald Trump’s administration, this week, putting an end to years of head-butting between the billionaires’ companies as Dimon becomes the latest billionaire warming to Musk or Trump.

It was an eye-popping crack in the Donald/Elon bromance, which is being watched closely now that Trump has given Musk the power to roam the West Wing, where he is working out of an office on the second floor, and take a hatchet to government.

Mr. Bruni is a contributing Opinion writer. Ms. McLean is a contributing editor at Business Insider and an author of “The Smartest Guys in the Room,” a book about the collapse of Enron. Mr. Silver is the author of “On the Edge: The Art of Risking Everything.”