SpaceX’s surging stock just turned its valuation into an acquisition weapon

SpaceX's stock surged nearly 50% since its IPO, making its $60 billion all-stock acquisition of Cursor cheaper in terms of dilution. Bill Ackman highlighted the dynamic as a core part of SpaceX's value, as Anthropic and OpenAI race to replicate the playbook by filing for their own IPOs.

TL;DR SpaceX’s stock has surged nearly 50% since its $135 IPO, making its $60 billion all-stock acquisition of Cursor cheaper in terms of dilution. Bill Ackman called the dynamic a core part of SpaceX’s value, as Anthropic and OpenAI race to replicate the playbook by filing for their own IPOs. SpaceX priced its IPO at $135 a share on 12 June. Five days later, the stock has climbed nearly 50%, pushing SpaceX past Amazon https://cryptobriefing.com/spacex-overtakes-amazon-valuation/ to become the fifth most valuable public company in the world at roughly $2.66 trillion. That surge is not just making shareholders richer. It is making acquisitions cheaper. The Cursor deal On Monday, SpaceX confirmed it would acquire Cursor, the AI coding startup, for $60 billion https://thenextweb.com/news/spacex-plans-to-buy-cursor-for-60-billion-once-its-record-ipo-wraps in an all-stock transaction. The deal, first agreed in April https://www.cnbc.com/2026/06/16/spacex-spcx-cursor-acquisition-ipo.html , gave SpaceX 30 days after its IPO to finalise the terms. It took three. Because SpaceX is paying entirely in stock, every percentage point the share price climbs reduces the number of shares it needs to hand over. The final share count will not be set until just before closing, expected in the third quarter. But if the stock stays at current levels, SpaceX will issue roughly a third fewer shares than it would have at the IPO price. Valuation as a weapon Billionaire investor Bill Ackman spotted the dynamic immediately. “The Cursor acquisition costs materially less in dilution because of SpaceX’s high valuation,” he wrote on X https://x.com/BillAckman/status/2066866144154161555 , adding that SpaceX’s ability to do “economically, strategically, and technologically accretive acquisitions” is a core part of its value. The logic creates a flywheel. A high stock price makes deals cheaper in terms of dilution, which makes the combined entity more valuable, which pushes the stock higher, which makes the next deal cheaper still. Critics had questioned whether SpaceX’s valuation was justified https://thenextweb.com/news/spacex-ipo-openai-anthropic-private-market-test heading into its IPO. The counterargument is that sheer size, when paired with rising stock, is itself a strategic asset. What SpaceX is buying Cursor is not a speculative bet. The AI coding tool reached $2 billion in annual recurring revenue https://thenextweb.com/news/cursor-anysphere-2-billion-funding-50-billion-valuation-ai-coding in roughly three years, the fastest business-to-business scaling on record, with more than one million paying customers and 70% of the Fortune 1,000 in its base. Founded by four MIT classmates including 25-year-old CEO Michael Truell https://finance.yahoo.com/sectors/technology/articles/cursor-25-old-ceo-former-193607029.html , Cursor helped spark the “vibe coding” trend, in which developers describe what they want and AI agents write the code. The acquisition will fold into xAI, the artificial intelligence company SpaceX absorbed in a $1.25 trillion all-stock merger in February https://thenextweb.com/news/xai-all-cofounders-departed-musk-spacex-rebuild . SpaceX’s stock rose after the Cursor announcement on Monday, the opposite of what typically happens to an acquiring company’s share price. The market, it appears, sees the deal as accretive rather than dilutive. The race to replicate SpaceX is not the only company eyeing this playbook. Anthropic filed confidentially for an IPO https://thenextweb.com/news/anthropic-ipo-confidential-filing-openai-race-965-billion on 1 June at a valuation approaching $965 billion, and OpenAI followed a week later. Both companies are sitting on enormous private valuations but lack the liquid stock that would let them do acquisitions at SpaceX’s scale. Going public would change that. All-stock deals cut both ways. If SpaceX’s share price drops, it would need to issue more stock for the same deal, diluting existing shareholders further, and Musk-run companies are not immune to volatility. But for now, the market is handing SpaceX an asset that appreciates even when it spends it. That is a difficult advantage for competitors still trading on private-market IOUs.