Elon Musk has fallen below the $1 trillion net worth threshold he crossed less than a fortnight ago, after a sharp correction in technology stocks erased hundreds of billions of dollars from his paper fortune.

SpaceX listed on the Nasdaq on 12 June, priced at $135 per share, valuing the rocket and satellite company at more than $1.77 trillion. Musk holds approximately 42% of the business, and the listing was enough to push his net worth past $1 trillion almost immediately. Investor enthusiasm carried the stock further in the days that followed, with shares reaching $225.64 by 16 June and his total valuation climbing to $1.32 trillion.

The rally did not hold. A broad sell-off across technology stocks, driven by mounting concern over the costs of artificial intelligence infrastructure and wider capital spending, knocked more than 30% from SpaceX's share price from its mid-June peak. On 22 June, a 16% fall in a single session wiped an estimated $240bn from Musk's balance sheet. Tesla shares fell nearly 6% the following day. Musk holds around 12% of the electric vehicle company, and the combined decline left his net worth at approximately $957bn, according to the Bloomberg Billionaires Index.

The speed of the reversal reflects how narrowly his fortune is constructed. SpaceX accounts for around 80% of his total net worth, with Tesla making up much of the remainder. There is little else. Most billionaires of comparable scale hold assets spread across a range of companies, sectors, or financial instruments. Musk does not. The practical consequence is that a significant move in SpaceX stock in either direction produces an outsized effect on his headline figure, to a degree that has few precedents at this level of wealth.

Danni Hewson, head of financial analysis at AJ Bell, said that for a stock like SpaceX, a significant amount of decision-making had likely been driven by emotion and anticipation rather than fundamentals. "Investing should be something treated with clear eyes and patience, even when such huge numbers are involved," she stated. Post-IPO volatility of this kind is not unusual for high-growth companies with elevated valuations, though the scale of the movement in SpaceX stock has been notable even by those standards.

The coming weeks may keep the pressure on. Restrictions preventing company insiders from selling their shares are due to lift in late July, and the prospect of that additional supply entering the market could weigh on the price. How institutional and retail investors respond to that moment will matter considerably for where the stock settles.

The arithmetic of recovery is straightforward. A rise of around 6% in SpaceX shares from current levels would be sufficient to push Musk's net worth back above $1 trillion. Given the volatility the stock has already demonstrated in its short time as a public company, that threshold could be crossed in either direction within days. Whether that makes him the world's first recurring trillionaire or simply illustrates the instability of a fortune so heavily concentrated in a single listing is a question the market will answer in its own time.

What is not in dispute is his position at the top of the global wealth rankings. Despite the decline, Musk remains the world's richest person by a considerable margin, and the gap between him and his nearest rivals has not materially changed.