SpaceX falls 3.5% to under $162 after a report of a $40 billion Nvidia chip raise

Fortune's figures show Musk's fortune moving about $63 billion in each direction in four days. Monday's rally took his net worth from $976.9 billion to $1.04 trillion ^[6], a gain of about $63.1 billion ^[10]. By Thursday the Bloomberg Billionaire Index had him at $987 billion, down from a $1.05 trillion high on Tuesday, a loss Fortune puts at $63 billion ^[4].

Most of that swing comes from one share price. Musk owns around 4.76 billion SpaceX shares, and 1.3 billion of them are unvested restricted stock ^[7]. At $162 the stake comes to about $771 billion ^[11], roughly 78% of his Thursday net worth ^[12]. Each dollar on the share price moves it by $4.76 billion ^[13], and about $211 billion of the value sits in shares that have not vested ^[14]. "Trillionaire represents some percentage ownership in companies that I built, and it's not sitting in a bank account," Musk said in an interview with entrepreneur Peter Diamandis ^[8].

The debt part of the story rests on one sentence. Fortune wrote that the plan "could have impacted shares due to potential concerns about the company's spending needs and debt load" ^[17]. The report it cites says SpaceX, which listed in June ^[9], plans to raise $40 billion to buy Nvidia chips ^[2]. Fortune does not say whether the money would come as loans, bonds or new shares, or on what terms. Tesla fell more than 2% the same day ^[3]. That makes it hard to pin the whole 3.5% on chips.

The terms decide what investors are pricing. If the $40 billion is borrowed, Fortune's debt-load worry is the right question. Then the claim that investors now mark down AI capex debt, even at a listing this richly valued, gets a real test. If it is equity, the question is dilution: at $162, $40 billion is about 247 million new shares ^[15], equal to about 5% of Musk's own holding ^[16]. And if the selling was mostly the same market that pulled Tesla down, the latest valuation call on record is Morgan Stanley's. Its analysts called the stock "cheap" on Monday, when shares rose nearly 8% ^[5].

I think the record so far shows a stock giving back a Monday rally after a news report, with a hedged explanation attached. It does not yet show investors putting a price on AI debt. The counter-case deserves weight. A 3.5% fall three days after analysts call a stock cheap is how a repricing would begin, and a net worth index is a blunt proxy that mixes Tesla in with SpaceX. The view is wrong if SpaceX keeps falling on days Tesla rises.