SpaceX Discloses 18,712 BTC, Set to Become 7th Largest Public Bitcoin Holder

Elon Musk's SpaceX has publicly disclosed 18,712 BTC on its corporate balance sheet in an S-1 filing submitted to the SEC yesterday, well ahead of the company's planned June 12 IPO. The position is worth roughly $1.45 billion at today's price of approximately $77,500 per Bitcoin.

The figure is significantly larger than previously estimated. Public trackers, including BitcoinTreasuries.net, had pegged SpaceX's holdings at around 8,285 BTC based on prior reporting and on-chain data. The S-1 reveals the company owns more than double that an additional 10,427 BTC that was never publicly known.

Once SpaceX completes its IPO, it will become the 7th largest public company Bitcoin holder in the world, surpassing Coinbase, Strive, and Musk's other publicly traded company, Tesla.

The S-1 is the first time SpaceX has been required to itemize its digital asset holdings under standard disclosure rules. The 18,712 BTC figure has been on the balance sheet for some time; what changed is the obligation to disclose it.

The gap between the prior estimate (8,285 BTC) and the disclosed figure (18,712 BTC) is a useful reminder of how much corporate Bitcoin accumulation may be occurring outside the public view.

Tesla currently holds 11,509 BTC and has not added to its position since 2024. The company famously sold roughly 75% of its initial holdings in Q2 2022, but the remaining position has been held untouched through multiple drawdowns and market cycles. Despite repeated speculation that Tesla would liquidate during downturns, it has not.

With its IPO disclosure, SpaceX surpasses Tesla as Musk's largest Bitcoin-holding company by a margin of more than 7,000 BTC.

Musk has cycled between public enthusiasm and skepticism toward Bitcoin for years. He has, at various points, changed his X profile picture to a Bitcoin laser-eye image and his bio simply to "#bitcoin," only to later voice concerns about the network's energy use and pause Tesla's Bitcoin payments program in 2021. The SpaceX disclosure shows that, regardless of public messaging, accumulation continued behind the scenes.

SpaceX is targeting a public listing on June 12, with Musk expected to retain a controlling stake of over 85% of the company post-offering. That concentration of ownership means treasury decisions — including any future Bitcoin accumulation or disposal — will remain effectively under Musk's discretion.

For a company of SpaceX's scale and strategic importance, a 18,712 BTC position represents both a meaningful balance sheet allocation and a signal to other large private companies considering similar treasury policies.

We will be updating BitcoinTreasuries.net to reflect SpaceX's disclosed holdings and will list the company in the public companies table once the IPO closes on June 12.