Elon Musk buys $1 billion worth of Tesla stock

In a move that has rattled global markets, Tesla CEO Elon Musk has snapped up nearly $1 billion worth of Tesla stock, his first open-market purchase since 2020.

A filing with the U.S. Securities and Exchange Commission (SEC) confirmed Musk acquired about 2.57 million Tesla shares on Friday, September 12, through 25 separate transactions. The purchases, executed via the Elon Musk Revocable Trust, ranged between $372 and $396 per share, averaging $389.

The massive buy marks the largest insider stock acquisition by value in Tesla’s history.

Market Response: Stock Surges

Tesla’s shares jumped sharply following the news. By 11:21 a.m. EDT on September 15, stock prices had climbed 6.64% to $422.25, after briefly surging as much as 9% in pre-market trading.

The rally propelled Tesla into positive territory for 2025, reversing its year-to-date decline, while also boosting Musk’s net worth by several billion dollars in a single day. Analysts noted that Musk’s gains from the initial surge already eclipsed the cost of his $1 billion investment.

Trading volume reached record highs, underscoring investor enthusiasm and renewed confidence in Tesla’s long-term vision.

Context: $1 Trillion Pay Package on the Horizon

The timing of Musk’s purchase is particularly significant. It coincides with Tesla’s board proposing a record-breaking compensation package, potentially worth up to $975 billion (nearly $1 trillion) if Musk achieves bold milestones over the next decade.

These include:

• Expanding Tesla’s market capitalization from $1.3 trillion to $8.5 trillion
• Deploying one million autonomous robotaxis
• Producing one million humanoid robots
• Increasing profits more than 24-fold

The shareholder vote on this package is set for November 2025. Many analysts view Musk’s billion-dollar stock purchase as both a vote of confidence in Tesla’s future and a strategic move to solidify his influence ahead of the vote.

Tesla’s Recent Challenges

Despite the rally, Tesla faces headwinds:

• Falling sales in Q1 and Q2 2025, marking historic declines
• A sharp drop in profits amid global competition in the EV sector
• Legal setbacks, including a $243 million verdict linked to Autopilot crashes and ongoing EU investigations into its self-driving claims
• Political controversies, with Musk’s role in the Trump administration’s Department of Government Efficiency drawing backlash

U.S. tax credits for EVs also expire at the end of September, posing another challenge to sales growth.

Musk’s Bold Bet on Tesla’s Future

Musk, with a net worth exceeding $419 billion, has not made such a large open-market buy since February 2020. Instead, he has been a net seller in recent years, unloading over $20 billion in stock to help fund his 2022 acquisition of Twitter (now X).

Now, his $1 billion purchase is being widely read as a bet on Tesla’s future beyond EVs, especially in areas like robotaxis, humanoid robotics, and artificial intelligence.

On X (formerly Twitter), reactions were swift and divided. Some hailed the move as a game-changer likely to “maul shorts” and trigger exponential gains, while critics accused Musk of ego-driven theatrics or manipulation amid pending shareholder lawsuits.

Analyst Views: Opportunity or Gamble?

Market watchers remain mixed. Out of 64 surveyed analysts, half issued “buy” or “strong buy” ratings, citing Tesla’s innovations in clean energy, AI, and upcoming vehicle launches. Others urged caution, pointing to slowing global demand and intensifying competition from Chinese EV makers.

For investors, insider buys of this scale are often interpreted as a sign the stock is undervalued. With Tesla’s shares already up 66% over the past six months, Musk’s timing may prove either a masterstroke or a high-stakes gamble.

Bottom Line

Musk’s billion-dollar bet has once again thrust Tesla into the spotlight. Whether this move cements the company’s trajectory toward becoming an $8.5 trillion tech giant or exposes investors to fresh risks, one thing is clear: Elon Musk remains the ultimate market mover.