Billion-Dollar Purchase Marks Musk’s Largest Personal Investment Since 2020 and Rekindles Debates About Tesla’s Direction Following Sales Decline and Intense Competitive Pressure.
Elon Musk surprised the financial market by spending about US$ 1 billion to acquire shares of Tesla Inc., in his largest purchase since 2020. The news boosted the company’s stock by up to 7% in pre-market trading and reignited debates about the automaker’s future.
According to regulatory documents, Musk bought about 2.57 million shares on September 12, paying prices between US$ 372 and US$ 396 per share. The transaction was conducted through the Elon Musk Revocable Trust, of which he is the administrator.
Tesla confirmed that this was not a corporate buyback. Musk used his own funds, slightly increasing his stake in the company.
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Immediate Market Reaction
Wall Street’s response was swift. Shares of Tesla rose 6.2% at the opening of the New York Stock Exchange and began to show gains for the year, after having dropped as much as 45% in early April.
The movement drew attention because Musk had not made purchases in the open market since February 2020. In contrast, in 2022, he sold over US$ 20 billion in Tesla shares to finance the acquisition of Twitter.
The decision comes at a delicate time for the company.
Global vehicle deliveries fell 13% in the first half of 2025, reflecting a slowdown in sales and increased competition in the sector.
Support from Tesla’s Chairwoman
Tesla’s board chair, Robyn Denholm, defended Musk’s leadership shortly after the purchase announcement. In an interview with Bloomberg Television on September 12, she stated that he is a “generational leader.”
Denholm noted that Musk’s political positions are part of his personal life and emphasized that everyone has the right to express opinions. She also mentioned the US$ 1 trillion compensation plan proposed by the board, which ties rewards to market value and performance targets.
For Denholm, the billion-dollar acquisition reinforces Musk’s commitment and shows that he has “skin in the game” ahead of the shareholder vote on the compensation package.
Challenges and Future Bets
Despite the momentary euphoria, analysts point out challenges. Tesla’s market share in the U.S. dropped to below 40% in August, according to Cox Automotive. In Europe, registrations also declined.
Moreover, shipments from the Shanghai factory dropped in July and August, signaling a fall in global demand. Musk, for his part, is betting on new segments such as robotaxis and humanoid robots.
He, however, warned of “some tough quarters” when the incentives for electric vehicles in the U.S. expire at the end of September. Investors are now watching to see if Musk’s billion-dollar investment will translate into better results.
Political Controversies and Public Impact
Elon Musk’s personal actions continue to attract attention. Recently, he remotely participated in a rally in London organized by far-right activist Tommy Robinson.
During his speech, Elon Musk stated that “violence is coming” to the United Kingdom and said: “You either fight back or die.” A spokesperson for British Prime Minister Keir Starmer described the remarks as “inflammatory and dangerous.”
The controversy highlighted how his political activity may collide with his role as CEO of Tesla, a point that critics have raised for years.
Immediate Market Effect
With an estimated net worth of US$ 419 billion, Elon Musk has once again put Tesla in the spotlight. For investors, the US$ 1 billion purchase signaled confidence and boosted the shares.
For skeptics, the move raises questions about the timing and motivations. Nevertheless, Musk has once again demonstrated that his decisions can influence both Wall Street and the global public debate.

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