Skip to navigationSkip to main contentSkip to right columnADVERTISEMENTJames Brumley, The Motley FoolSat, June 6, 2026 at 6:25 PM GMT+2 8 min readSpaceX's initial public offering is now officially imminent. Its final pricing is expected on June 11, with public trading to begin on June 12. The latest word is that the company aims to raise $75 billion by selling 555.6 million shares at $135 apiece, implying a corporate valuation of $1.75 trillion.That would make it the biggest IPO ever in terms of the total amount of money raised, and in terms of market capitalization at the time the public offering is made. Indeed, that valuation would instantaneously make SpaceX the world's ninth biggest publicly traded company, right behind Broadcom, and just ahead of Elon Musk's other company, Tesla.Missed Nvidia in 2009? This Rare Signal Is Flashing Again. In 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia. For the first time in years, that same "Total Conviction" signal is flashing for a company 1/100th the size of Nvidia. Continue »Almost needless to say, expectations are high.This begs the question: What were the biggest U.S.-listed initial public offerings up until this point, and how did they perform out of the gate?Uber TechnologiesIPO date: May 10, 2019Amount raised: $8.1 billionInitial valuation: $82.4 billionRide-hailing outfit Uber Technologies (NYSE: UBER) arguably waited just a little too long to go public. While the company was still satisfied with its result in early 2019, insiders were disappointed with a final price that came in nearer the bottom of its suggested price range. Had it happened just a few months earlier -- when the hype surrounding the company was stronger -- Uber might have fared better.Things worked out better in the long run for its earliest shareholders, though, letting them in at a lower price in front of a 58% gain since its IPO.UBER data by YCharts.Uber shares were losing ground shortly after the initial hype faded, but before the onset of the COVID-19 pandemic in early 2020 brought the world to a screeching halt, including companies' businesses. We'll never know for sure if the capitulation in March 2020 was caused by the contagion, or if it was going to happen anyway.AT&T WirelessIPO date: April 27, 2000Amount raised: $10.6 billionInitial valuation: $68.1 billionContrary to a common assumption, the AT&T Wireless of the early 2000s isn't really the AT&T (NYSE: T) of today. In fact, AT&T Wireless was technically a spinoff from AT&T that would go on to be acquired by Cingular in 2004. Cingular was part of SBC Communications, which would also eventually acquire the rest of AT&T anyway, and use the familiar name as an umbrella for all of its businesses. It's also been through several evolutions in the meantime, including the acquisition and eventual sale of DirecTV, as well as the purchase and exit of entertainment giant Time Warner.Terms and Privacy PolicyPrivacy & Cookie SettingsMore Info