Musk's SpaceX stake is worth over $1 trillion. Here are the other billionaire shareholders

SpaceX 's record-breaking IPO boosted founder and CEO's Elon Musk's personal stake in the company to more than $1 trillion. But he isn't the only one seeing huge gains from SpaceX's blockbuster listing.

The IPO also minted thousands of new millionaires — and saw stakes of some shareholders surpass the billion-dollar mark.

SpaceX's debut week on the public markets has seen investors scramble to buy into Musk's lofty ambitions for the company, but cooling sentiment has pared some of those gains over the past couple of days.

Earlier in the week, its market cap surpassed Amazon and — briefly — Microsoft . Thursday's loss, however, saw SpaceX close at a market cap of $2.43 trillion, slipping below the ecommerce giant.

Nevertheless, shares were still up 37% after its historic debut last week, which offered shares at a set price of $135.

From early investors to long-time company execs, CNBC has tracked down several SpaceX shareholders with stakes worth over $1 billion using data from FactSet.