Musk's Fortune Shrinks by $700 Billion as SpaceX, Tesla Shares Fall

A dual downturn in the stock prices of SpaceX and Tesla has wiped out an estimated $700 billion from Elon Musk's personal fortune over the last five weeks. According to the Bloomberg Billionaires Index, Musk's net worth fell from a peak of $1.45 trillion on June 16 to approximately $738 billion as of the July 23 market close, driven by post-IPO volatility at his aerospace firm and disappointing quarterly results from his electric vehicle company.

SpaceX's Post-IPO Plunge

Since its landmark $75 billion initial public offering on June 12, 2026, Space Exploration Technologies (NASDAQ: SPCX) has experienced extreme price swings. After pricing at $135 per share, the stock surged to an all-time high of $225.64 on June 16 before reversing course. As of Friday, the shares traded at $112.96, roughly 50% below their peak and 16% under the IPO price.

A key catalyst for the decline was a scrubbed Starship launch on July 16 due to a reported engine failure, which sent the stock down over 4% in extended trading. Despite the paper losses, a June 17 SEC filing shows Musk retains 82% voting power through a dual-class share structure, giving him firm control. The stock's fall has attracted significant bearish bets, with short interest swelling to nearly one-third of the public float, according to a July 21 Investing.com analysis.

Tesla's Earnings Disappoint

Adding to the pressure, Tesla (NASDAQ: TSLA) reported a significant second-quarter earnings miss on July 23. The company's results revealed several points of concern for investors:

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• Non-GAAP EPS: Came in at $0.33, missing the consensus estimate of $0.50.
• Operating Income: Dropped 56.88% year-over-year to $398 million.
• Operating Margin: Contracted to a thin 1.4%.
• Free Cash Flow: Turned negative to the tune of -$1.09 billion amid a 141.81% surge in capital expenditures.

The market reacted swiftly, sending Tesla shares down 14.52% in a single session and erasing another $18.6 billion from Musk's net worth. In response to the challenges, Musk has increasingly hinted at a potential merger between Tesla and SpaceX, citing growing operational overlap between the two firms.

Upcoming Risks for Investors

Despite the massive drawdown, Musk remains the world's wealthiest individual by a substantial margin. However, several critical events in the coming weeks could introduce further volatility for SpaceX shareholders.

• August 4: The company is scheduled to release its first-ever quarterly earnings report as a public entity.
• August 6: The IPO lockup period expires, allowing insiders to sell a portion of their holdings. According to CNBC, this could release up to 911.5 million shares into the market.
• Date TBD: A rescheduled Starship test flight represents a major binary event, where a success could restore confidence while another failure would likely intensify selling pressure.