SpaceX has made its stock market debut, and the launch was anything but quiet. According to CNBC, the company surged past Microsoft in market cap shortly after going public, landing it the title of fourth-biggest U.S. company by that measure — a striking milestone for a private rocket firm that spent years shunning public markets.

The IPO has been years in the making. TechCrunch, which has tracked SpaceX since its early days, published a comprehensive post-IPO package covering the key angles: who stands to gain from the listing, who might not, details from the pre-IPO deal activity, and a breakdown of what SpaceX disclosed in its S-1 registration document filed with regulators.

The S-1 is the first time outside investors have gotten a formal, legally required look at SpaceX's financials, business risks, and corporate structure — documents that private companies are never required to share. Pre-IPO deals, often reserved for well-connected institutional investors, allowed some buyers to get in before the general public had access.

The fact that a rocket and satellite company now sits alongside Apple, Nvidia, and similar giants in America's market-cap rankings signals how dramatically the commercial space industry has matured — and how much investor appetite exists for bets on what comes next beyond Earth's atmosphere.