Musk’s Net Worth Swings $61B in a Day as SpaceX and Tesla Shares Rebound

Key points

• Musk’s net worth rose by $61 billion in one day due to gains in SpaceX and Tesla stock.
• This increase moves his net worth back toward the $1 trillion mark, following a recent decline.
• SpaceX’s IPO raised $75 billion with an initial valuation of $1.77 trillion, the largest in history.
• Musk’s 42% stake in SpaceX was briefly valued at $1.125 trillion at the peak share price of $225.
• By July 23, SpaceX shares had fallen to roughly $118, reducing the value of Musk’s stake to approximately $590 billion.
• Tesla shares also dropped significantly, erasing an additional $25 billion to $35 billion from Musk’s net worth.

Background

Recent developments have seen Musk’s wealth experience extreme volatility. In August 2026, SpaceX shares wobbled as 319 million shares unlocked, increasing the public float. Earlier in the month, Tesla stock surged 4.8% on news of Musk’s push for in-house energy production for AI data centers. Additionally, Musk has been involved in various ventures, including certifying suppliers for the Optimus robot and targeting orbital missions for Starship. A documentary released in September portrayed Musk more as a strategic investor than an inventor, questioning the evidence behind some of his public claims.

How outlets are covering it

Yahoo Finance reports on the immediate $61 billion gain in Musk’s net worth, focusing on the rebound of SpaceX and Tesla shares. The Daily Economy, through Paul Mueller, emphasizes the volatility and speculative nature of this wealth, noting that Musk’s paper billions have vanished and reappeared rapidly. Mueller argues that market cap calculations for SpaceX are misleading due to the limited public float, comparing it to an artisan selling only a fraction of their inventory. While Yahoo Finance highlights the current upward trend, The Daily Economy stresses the risks of wealth taxes on such volatile assets, noting that a 5% tax at peak valuation would have been $55 billion, but is now only $27 billion. Both sources agree that Musk’s wealth is entirely tied to stock valuations, but they differ in their emphasis on the stability versus the speculative nature of these figures.

Why it matters

The rapid fluctuations in Musk’s net worth highlight the risks and uncertainties associated with valuing companies with limited public float. This volatility has broader implications for wealth taxes and market stability, as it demonstrates how quickly paper wealth can disappear. It also underscores the importance of understanding the difference between market cap and actual liquid assets, particularly for high-profile entrepreneurs whose wealth is tied to a few major companies.

What to watch

Investors will continue to monitor SpaceX and Tesla shares for further volatility, especially as more shares unlock in the coming months. The next major unlock is expected around SpaceX’s Q3 earnings in November, with a larger tranche of 1.3 billion shares. Musk’s net worth may continue to fluctuate significantly, depending on market sentiment and company performance. Additionally, the debate over wealth taxes may intensify as policymakers consider how to tax volatile, paper-based wealth.