---
id: "2026-06-12-spacex-ipo-record"
url: "https://postcutoff.com/e/2026-06-12-spacex-ipo-record/"
as_of: "2026-11-13T13:49:00+01:00"
date: "2026-06-12"
date_precision: day
category: business
importance: 4
confidence: high
status: [Confirmed]
sources: 3
editor: human editor
human_review: null
version: "2026-10-04"
---

As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/e/2026-06-12-spacex-ipo-record/

# SpaceX (incl. xAI) lists on Nasdaq in record $75B IPO

SpaceX - which had absorbed xAI in February 2026 - priced the largest IPO ever at $135 per share, raising $75 billion, and began trading on Nasdaq as SPCX on 2026-06-12, closing its first day up about 19% at $160.95. It made a frontier AI lab (Grok) part of a publicly traded company worth roughly $2 trillion.

## Key facts
- Priced 555,555,555 shares at $135 each (NPR)
- Raised $75 billion - biggest IPO on record
- Ticker: SPCX on Nasdaq; first trading day 2026-06-12
- Opened around $150, closed at $160.95 (+19%) on day one (CNBC)
- More than 500 million shares traded on day one
- Implied market cap after day one: about $2.1 trillion (reported)

## What happened

SpaceX priced its IPO on 2026-06-11 at $135 per share for 555,555,555 shares, raising $75 billion - the largest IPO in
history. Shares began trading on Nasdaq under **SPCX** on 2026-06-12, opened around $150 and closed at $160.95,
roughly 19% above the offer price, with more than 500 million shares changing hands.

## Why it matters

Because SpaceX had absorbed xAI earlier in 2026, this was also effectively the first public listing of a frontier AI
lab. It gives xAI/SpaceXAI access to public capital to fund Colossus-scale compute and Grok training, and puts
Grok's progress under quarterly public-market scrutiny.

## Your AI and this story

- GPT-6 Astra (training cutoff April 2026): 43 days after its cutoff
- Claude Opus 5.5 (training cutoff June 2026): in its training data
- Gemini 4 Hydrogen (training cutoff March 2026): 73 days after its cutoff
- Grok 4.7 (training cutoff May 2026): 12 days after its cutoff

## Sources

1. [NPR - SpaceX blasts off with a record-breaking $75 billion IPO](https://www.npr.org/2026/06/11/nx-s1-5853199/spacex-ipo-price-elon-musk) (npr.org, press)
2. [CNBC - SpaceX IPO takeaways: SPCX closes at $161, jumping 19% after record debut](https://www.cnbc.com/2026/06/12/spacex-ipo-spcx-live-updates.html) (cnbc.com, press)
3. [Wikipedia - Initial public offering of SpaceX](https://en.wikipedia.org/wiki/Initial_public_offering_of_SpaceX) (en.wikipedia.org, discussion)

## Changes

- 2026-09-29 (filed): Created

## Related

- 2026-08-12: [SpaceXAI releases Grok 4.6, matching GPT-5.6 Sol on the AA Intelligence Index](https://postcutoff.com/e/2026-08-12-grok-4-6/index.md)
- 2026-02-02: [SpaceX absorbs xAI in a $1.25 trillion merger](https://postcutoff.com/e/2026-02-02-spacex-acquires-xai/index.md)