{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-06-12-spacex-ipo-record/","md":"https://postcutoff.com/e/2026-06-12-spacex-ipo-record/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-06-12-spacex-ipo-record","date":"2026-06-12","date_precision":"day","short_title":"SpaceX (incl. xAI) lists on Nasdaq in record $75B IPO","deck":null,"takeaway":"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.","category":"business","category_label":"Business","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"NPR - SpaceX blasts off with a record-breaking $75 billion IPO","url":"https://www.npr.org/2026/06/11/nx-s1-5853199/spacex-ipo-price-elon-musk","type":"press","group":"press","domain":"npr.org"},{"n":2,"title":"CNBC - SpaceX IPO takeaways: SPCX closes at $161, jumping 19% after record debut","url":"https://www.cnbc.com/2026/06/12/spacex-ipo-spcx-live-updates.html","type":"press","group":"press","domain":"cnbc.com"},{"n":3,"title":"Wikipedia - Initial public offering of SpaceX","url":"https://en.wikipedia.org/wiki/Initial_public_offering_of_SpaceX","type":"discussion","group":"reactions","domain":"en.wikipedia.org"}],"official":0,"filed":"2026-09-29","updated":"2026-09-29","orgs":["SpaceX","xAI"],"title":"SpaceX (incl. xAI) lists on Nasdaq in record $75B IPO","summary":"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)"],"key_numbers":[],"tags":["xai","spacex","ipo","grok","capital-markets"],"science":null,"body_md":"## What happened\n\nSpaceX priced its IPO on 2026-06-11 at $135 per share for 555,555,555 shares, raising $75 billion - the largest IPO in\nhistory. Shares began trading on Nasdaq under **SPCX** on 2026-06-12, opened around $150 and closed at $160.95,\nroughly 19% above the offer price, with more than 500 million shares changing hands.\n\n## Why it matters\n\nBecause SpaceX had absorbed xAI earlier in 2026, this was also effectively the first public listing of a frontier AI\nlab. It gives xAI/SpaceXAI access to public capital to fund Colossus-scale compute and Grok training, and puts\nGrok's progress under quarterly public-market scrutiny.","disputed":[],"related":[{"id":"2026-08-12-grok-4-6","url":"https://postcutoff.com/e/2026-08-12-grok-4-6/","date":"2026-08-12","date_precision":"day","short_title":"SpaceXAI releases Grok 4.6, matching GPT-5.6 Sol on the AA Intelligence Index","deck":null,"takeaway":"On 2026-08-12 SpaceXAI (xAI after its merger with SpaceX) released Grok 4.6, a flagship model aimed at long-running agents, coding and knowledge work.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":8,"official":6,"filed":"2026-09-29","updated":"2026-09-30","orgs":["xAI","SpaceX"]},{"id":"2026-02-02-spacex-acquires-xai","url":"https://postcutoff.com/e/2026-02-02-spacex-acquires-xai/","date":"2026-02-02","date_precision":"day","short_title":"SpaceX absorbs xAI in a $1.25 trillion merger","deck":null,"takeaway":"It fused a frontier AI lab with the world's dominant launch provider and a large satellite network, giving xAI access to public-market capital (via the June 2026 SpaceX IPO) and a unique compute-in-space thesis.","category":"business","category_label":"Business","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"official":0,"filed":"2026-09-29","updated":"2026-09-29","orgs":["SpaceX","xAI"]}],"people":[],"posts":[],"videos":[],"models":[],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":43,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":null,"in_training_data":true},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":73,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":12,"in_training_data":false}],"short_url":"https://postcutoff.com/s/spacex-incl-xai-lists"}