I was sitting in the park the other day, killing time with a book, when I came across a screenshot in the JCRI case study by Renz and Vogel that made me put the book down. It might be the most expensive tweet in history. Nine words. Typed on a phone. Sent at 12:48 pm ET on August 7, 2018. Those nine words triggered an SEC investigation, wiped billions off Tesla’s market cap, and ultimately cost Elon Musk $40 million and his title as chairman of Tesla’s board.

The tweet read: “Am considering taking Tesla private at $420. Funding secured.”

What fascinated me was not just the tweet itself but the collision between Musk’s deeply personal relationship with truth and the SEC’s very specific legal definition of it. This is a story about what happens when a founder who operates on instinct and conviction runs headfirst into a regulatory system built on disclosure rules and due process.

The Tweet Heard Around Wall Street

On that August afternoon, Musk did not just post a passing thought. He expanded on his privatization plans in follow-up tweets and engaged directly with other Twitter users about the idea. The $420 price point was a significant premium over Tesla’s trading price at the time, and the words “funding secured” implied that Musk had a concrete financial commitment to back the deal.

Elon Musk in 2018, the year the "funding secured" tweet upended his relationship with regulators and reshaped how the SEC viewed CEO social media activity. Photo via Wikimedia Commons. Photo: Wikimedia Commons. CC BY-SA 2.0.

He did not. Musk did not have a finalized funding agreement. There were conversations, there were possibilities, but nothing that a securities lawyer would call “secured.” In the language of the SEC, this was potentially a material misstatement – a false claim that could move markets. And it did move markets. Tesla shares spiked after the tweet before beginning a painful decline.

Between August 6 and September 27, 2018, Tesla’s stock price dropped by approximately 10%. Short sellers, whom Musk had been battling publicly for months, were whipsawed. Retail investors who bought on the “funding secured” signal watched their positions erode. The market chaos was immediate and measurable.

Musk’s Defense: Truth as a Core Value

What I find most interesting about this episode is how Musk framed his own actions. He did not treat the tweet as a mistake. He treated it as a reflection of his genuine intent and his personal commitment to honesty. In his public response to the SEC investigation, Musk said:

“I have always taken action in the best interests of truth, transparency and investors. Integrity is the most important value in my life and the facts will show I never compromised this in any way.” – Elon Musk, public statement during SEC investigation (Renz & Vogel, 2020)

This is consistent with something Musk has expressed repeatedly across his career. As Jorgenson documented:

“Truth matters to me a lot. Pathologically, it matters to me.” – Elon Musk, quoted in Jorgenson, The Book of Elon

And again:

“I am obsessed with truth. If you’re going to come up with a good solution, the truth is really, really important.” – Elon Musk, quoted in Jorgenson, The Book of Elon

Here we see the tension at the heart of the story. Musk genuinely believed he was telling the truth – he was considering taking Tesla private, and he believed the funding could be arranged. The SEC’s position was that “funding secured” communicated a level of certainty that did not exist. Both sides were operating from their own definitions of truth, and neither was willing to back down easily.

The Short-Seller War

To understand why Musk sent that tweet in the first place, you have to understand the pressure he was under. By mid-2018, Tesla was one of the most heavily shorted stocks on the market. Short sellers were betting that Tesla would fail, and their public commentary was relentless. Musk felt this deeply and said so:

Being public “subjects Tesla to constant defamatory attacks by the short-selling community, resulting in great harm to our valuable brand.” – Elon Musk (Renz & Vogel, 2020)

The SpaceX entrance in Hawthorne, California. Even as the SEC battle unfolded, Musk was simultaneously running SpaceX and pushing Tesla toward profitability -- a level of multitasking that few founders have ever attempted. Photo via Wikimedia Commons. Photo: Wikimedia Commons. CC BY-SA 2.0.

Taking Tesla private would have eliminated the short sellers entirely. No public stock means no shorting. From Musk’s perspective, going private was not just a financial maneuver – it was a way to protect the company and its mission from what he saw as bad-faith attacks. The tweet was an expression of that frustration, fired off with the speed and directness that has always characterized Musk’s communication style.

The SEC Settlement

The Securities and Exchange Commission sued Musk, and for a brief period it looked like the case might go to trial. Ultimately, both sides reached a settlement in April 2019. The terms were significant:

  • Musk stepped down as Chairman of Tesla’s board of directors but remained CEO.
  • Both Tesla and Musk each paid $20 million in fines, for a combined $40 million total.
  • Musk’s future communications about Tesla – particularly on social media – would need to be pre-approved by a securities lawyer.

That last condition was perhaps the most symbolically important. Elon Musk, one of the most prolific and unfiltered communicators in the history of business, was now required to run his tweets past a lawyer before posting. For a man who had built his public persona on speaking without a filter, this was a fundamental constraint on how he operated.

“Worth It”

What did Musk think of all this? He called the tweet “worth it.”

That response tells you everything about how Musk processes setbacks. He lost his chairman title. He paid $20 million out of pocket. His company paid another $20 million. He was placed under a communication supervision order. And his reaction was that the whole thing was worth the price.

This is consistent with a broader pattern I have noticed across Musk’s career. Every major setback – getting fired from X.com, nearly going bankrupt in 2008, almost dying from malaria – gets absorbed and reframed as a cost of doing business at the scale he operates. As Jorgenson captured:

“No matter how smart you are, you will make some number of mistakes. Everyone makes mistakes. It’s just a question of how many and how often.” – Elon Musk, quoted in Jorgenson, The Book of Elon

The Tesla Roadster, a symbol of the company Musk was fighting to protect when he sent the "funding secured" tweet. Despite the SEC battle, Tesla went on to become the most valuable automaker in the world. Photo: Thomas doerfer via Wikimedia Commons, CC BY 3.0.

What Musk Kept

Here is what I keep coming back to: look at what Musk kept versus what he lost. He lost the chairman title – a governance role with limited operational power. He paid $20 million – a meaningful sum, but a fraction of his net worth even in 2019. He accepted lawyer oversight of his tweets – a constraint he has arguably tested the limits of ever since.

What he kept was the CEO role. He kept control of Tesla’s strategic direction. He kept his ability to set the company’s vision. And Tesla, far from being damaged permanently by the SEC battle, went on to become the most valuable automaker in the world by market capitalization. The stock that dropped 10% in the weeks following the tweet eventually multiplied many times over.

The “funding secured” episode could have ended Musk’s leadership of Tesla. It did not. Instead, it became another chapter in a career defined by high-risk moves and an almost stubborn refusal to play by conventional rules. As Musk himself has said about the startup journey:

“The real test of any startup is how well it responds to adversity and adapts.” – Elon Musk, quoted in Jorgenson, The Book of Elon

Tesla adapted. Musk adapted. The $40 million fine and the lost chairman title turned out to be the cost of a lesson about the boundaries between conviction and compliance – and Musk paid it without blinking.

For anyone building something ambitious, the takeaway is not that you should tweet without thinking. The takeaway is that setbacks, even expensive and public ones, do not have to define you. Musk walked away from the SEC battle still running the company, still setting the vision, and still speaking his mind. The tweet cost him $40 million. What he built afterward was worth considerably more.

Sources

  • Renz, A. & Vogel, M. (2020). Elon Musk’s “Funding Secured” Tweet: A Case Study in Securities Law and Social Media. JCRI Case Study.
  • Eric Jorgenson, The Book of Elon, 2021.
  • U.S. Securities and Exchange Commission, SEC Charges Elon Musk With Securities Fraud (September 27, 2018). sec.gov.
  • U.S. Securities and Exchange Commission, Elon Musk Settles SEC Fraud Charges (September 29, 2018). sec.gov.