SpaceX shares slipped on Tuesday to around $150, the price of its first trade when it debuted nearly two weeks ago.

Elon Musk's space and artificial intelligence company saw a $400 billion sell-off on Monday, and is pacing for a fourth-straight losing day.

SpaceX saw huge gains after a record-breaking IPO on June 12, briefly surpassing Amazon and Microsoft in market capitalization, before falling back below both as sentiment cooled.

The stock tanked 16% on Monday, following drops of 3.6% and 5% the previous two days of trading. SpaceX's market cap was $2 trillion at close on Monday.

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SpaceX stock.

The company announced on Monday a senior unsecured notes offering and disclosed that it had $100.8 billion in cash and cash equivalents on hand as of June 19.

That same day, SpaceX also revealed it has signed a major computing power agreement with open-source AI startup Reflection, providing the company with access to Musk's Colossus infrastructure.

SpaceX's stock surged after its blockbuster debut, with shares rallying more than 50% on their offering price, as investors scrambled to buy into Musk's lofty ambitions for the company.

But by the end of last week the average investor who bought SpaceX shares had seen nearly all of their gains disappear.

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