SpaceX, Elon Musk's company, raised $25 billion from the sale of debt securities, but investors have some doubts.

It expected to raise $20 billion, but has already received orders for nearly $90 billion.
It paid a high premium relative to Treasury bonds, and the short-term portion was in highest demand.
Elon Musk's aerospace and artificial intelligence (AI) company, SpaceX, raised $25 billion from the sale of debt securities.
Several sources familiar with the matter told CNBC that the company expected to raise $20 billion, but as of this Tuesday, it had already received orders for nearly $90 billion. Faced with this situation, the tech company increased the bond issuance by $5 billion.
The company - which has investment grade - paid a relatively high premium relative to Treasury bonds to close the deal, according to sources familiar with the matter who commented to Bloomberg.
The portions and the greatest demand were concentrated in the shortest-maturity portion of the operation - and therefore the least risky, as Bloomberg found.
It is likely that this trend and the premium the company is paying reflect concerns about SpaceX's cash flow: the company is burning cash at a high rate and, according to S&P Global Ratings, is likely to continue doing so until 2030, with a sharp increase in that spending rate next year.