For more than a decade, SpaceX grew and hit its milestones as one of the leading private space companies, and each successful launch and landing increased appetite for its still-private stock. Retail investors were locked out without accreditation, a dedicated marketplace account, and a five-digit minimum purchase. In 2026, anyone with a brokerage app can trade the now-public SpaceX (Nasdaq:SPCX). That sudden shift also drew attention to other private space companies and the prospect of early ownership. Some of them may repeat SpaceX's listing path, but for others, potential traders still face steep limitations and strict accredited-investor thresholds. Previous IPO decisions do not guarantee a similar level of access, and pre-IPO opportunities carry varied risk levels with no guaranteed ownership of actual shares. Pre-IPO pitches do not overrule the existing limits on accredited buyers.

Why You Can't Just Buy These Shares

Following SpaceX, shares of Blue Origin, Sierra Space, Relativity Space, Axiom Space, and Stoke Space are drawing attention as a potential source of pre-IPO stock. Acquiring those shares, however, is constrained by specific regulations for each investor.

All of the companies listed are incorporated in Delaware, USA, and buying their shares falls under the Securities Act of 1933. The act defines banks, businesses, organizations, and directors as potential accredited investors. For private persons — the group most relevant to retail buyers — US investors need an individual or joint net worth above $1M, excluding the primary residence.

In the European Union, the equivalent requirement is 'professional client' or 'elective professional investor' status, defined under MiFID regulation. In general, the status is assigned on two of three criteria: carrying out significant trading transactions, a portfolio of over $500,000, and professional expertise of at least one year in the financial sector with specialized knowledge of the planned stock acquisitions.

Accredited investor rules – who actually qualifies

Accredited investor rules focus roughly on two things: a person's knowledge and their assets. Outside of big organizations and professionals, individual investors face different requirements depending on regional or national regulations.

For US-based individuals, the requirements also have a liquidity and accreditation component. Under SEC rules, an individual must have an annual income above $200,000 for two years, a net worth above $1M excluding the primary residence, or hold Series 7, Series 65, or Series 82 licenses.

For EU-based professional investors, a person must fulfill two of three criteria — a portfolio valued above 500,000 EUR, high value and transaction volume over the four previous quarters, or professional expertise of over a year in a relevant financial field. The EU requirements are relatively liberal for individuals who achieve significant trading volumes on their own, even without specific financial-professional skills.

Other national rules are similar, with the most permissive focusing on assets and income and no additional requirements for specialized financial or investment knowledge.

What a "secondary marketplace" really is

In the USA, private company shares are treated as restricted securities under the 1933 Securities Act. The legislation allows a safe harbor market where public resale of restricted securities is possible. Rule 144 of the Securities Act allows the sale of restricted or control stock without SEC registration, subject to additional conditions. The rule also tracks affiliate and non-affiliate holders, where affiliates still face selling volume restrictions and must register their sales with the SEC.

Deals in private companies also need a platform, and that is what secondary marketplaces provide. The market is secondary to the initial raise, or primary market transaction. On the secondary market, early investors — employees, founders, VCs, and others — can sell equity directly to accredited or institutional investors.

Private markets serve a particular need: early stock owners may need to unlock the paper value of their investment and access liquidity. For accredited investors, secondary marketplaces open opportunities that would otherwise be closed to outside capital. They attract institutional buyers, family offices, and accredited investors who want to own part of a growing business. For companies, this means they can remain private much longer — up to 15 years — instead of going public earlier in their development. This dynamic has grown alongside the broader trend of companies staying private longer and raising larger sums before listing, which in turn expanded the role of secondaries in the venture ecosystem.

Secondary market platforms handle the paperwork and compliance for these complex deals. Popular platforms include Forge Global, CartaX, Nasdaq Private Market, Zanbato, and Hiive.

Why the quoted number is an indicated bid, not a price

The sale of private or control shares is up to the discretion of their owners and the demand of accredited investors. These deals are unpredictable, so unlike a large market there is no continuous price discovery; a single market price requires continuous, high-volume trading on a public order book. Private secondary markets are often illiquid, so any displayed price reflects the bid of potential buyers — the only parties able to define demand and pricing. This mechanism is not the same as a continuous market price for a public company's ticker.

The Companies

Blue Origin

Blue Origin, founded by Jeff Bezos, keeps a high public profile with celebrity missions and an invitation for space tourism. According to PitchBook, the company has been private since its founding in 2000, has three known investors, and is currently at the late-stage venture capital stage. Despite previous rounds, Blue Origin remains private as of September 2026.

Based on its latest raise of $10B, Blue Origin is valued at $130B as of July 8, 2026. That valuation once again led to scrutiny of the company's potential to go public. So far, the VC-backed raises have been tightly controlled, with Bezos directly taking a sizeable part of the investment.

For accredited investors, Blue Origin trades on Forge Global and Hiive; based on the Forge Global market, it carries an even higher valuation of $140B. That gap between the primary-round valuation and the secondary-market indication illustrates how private-company pricing can diverge across venues and data sources. Blue Origin has not suggested an upcoming IPO or filed preliminary documents. It is still growing in its VC funding stage, with up to 12,600 employees and work on the New Shepard suborbital craft, the New Glenn orbital rocket, and exploration of an orbital data center.

Sierra Space

Sierra Space, known for its Dream Chaser spaceplane, aims to redefine the approach to space defense. Founded in Louisville, CO, USA, in 2021, it has been private since then, relying on VC funding. As of 2026, the company has raised $2.29B in private funding. Sierra's own valuation report puts its total value at $8B, based on a $550M Series C raise in March 2026.

The company was also admitted to perform commercial space-station work, with the goal of building Orbital Reef, a multi-purpose space station. Sierra works on expandable space modules and habitats for commercial station work, and serves contracts for the US Department of Defense and the Space Development Agency, producing rocket systems, satellite components, and other defense technologies.

Sierra Space trades privately, with Nasdaq Private Market as its primary venue; other platforms include UpMarket, Forge, and EquityZen, all open to accredited investors. Based on brokerages, the private shares are valued around $25.49, rising after each VC round.

Relativity Space

Relativity Space is a growth company combining rocket design with 3D printing, aiming to simplify the rocket-building supply chain, bringing assembly time down to 60 days with fewer components. It was established in 2015 by Tim Ellis and Jordan Noone and remains private as of 2026, relying on VC-backed funding. Previous rounds were backed by Y Combinator, Mark Cuban, Social Capital, and other leading funds.

Since founding, Relativity Space has raised $1.6B across several rounds. Based on its latest 2021 round of $650M, the company is valued at $4.2B. On Nasdaq Private Market, the bid price is $6.47 as of August 14. It also trades on Forge and TsgInvest, where price setting still does not happen in real time. Interest is estimated through growth score and heat score signals. The company appeals mostly for its rapid growth and development, though it is still far from viable launches — a reminder that its valuation dates from a 2021 round, while later market signals come only from thin secondary bids.

Axiom Space

Axiom Space competes in commercial human spaceflight. It does not build its own rockets but focuses on commercial space station development, human missions, and specialized space hardware. Axiom has permission to attach its module to the International Space Station by 2027 and is commercially available at $65M per seat. It has secured $2.2B in customer contracts and carries a valuation of around $2.5B, with $1.64B raised to date, according to PitchBook.

Axiom trades on Nasdaq Private Market, Notice.co, Tsginvest, PrivateShares Fund, Forge, and Hiive — making it the most widely represented private space company. Bids are around $122.65. It has one of the lowest valuations among private space firms, creating increasing interest in an eventual IPO, but the company has not mentioned plans for a public sale and is currently available only to accredited investors.

Stoke Space

Stoke Space is a US-based reusable rocket developer founded in 2019 by engineers formerly of Blue Origin and SpaceX. It aims to build a reusable second-stage rocket for multiple launch cycles with shorter refurbishment downtime. As of August 13, Stoke Space is valued at $9B based on its latest $1B private raise, and finds price discovery through bids on Nasdaq Private Market, Forge, and Hiive.

Based on bids as of August 14, Stoke is priced at $50.07 per share, up over 260% for the past reporting period, driven by accredited investor interest. That move reflects bid-side demand in a thin market rather than exchange-driven price discovery. Even for those investors trading is limited, and Stoke Space has not mentioned the possibility of an IPO.

Also traded private space companies

More niche choices exist in space tech. Vast Space Systems is open to private investors on Nasdaq Private Market and Forge. Accredited investors can also trade Impulse Space, Varda, and K2 Space on those platforms.

The Access Routes – and What Each One Costs

Access to private space companies is only possible through a private secondary market, also known as an alternative trading system. These markets connect holders of private shares — VC backers, employees, early investors — to available buyers, who are also vetted as accredited investors. The platforms source liquidity, establish the value of private shares, and assist with legal and regulatory issues.

Trades settle in long windows, often 30 to 90 days. Some sales require additional compliance steps and multi-party approvals, and prices may be negotiated before a deal is struck. Private shares are liquidated in blocks from a specific holder, though investors can also place bids. Some platforms help create a Special Purpose Vehicle (SPV) to pool a purchase instead of selling shares directly. Platforms must also honor a company's right of first refusal, meaning that even if buyer and seller agree on a price, the company has up to 300 days to buy back its own shares or block the trade. These platforms therefore serve advanced investors ready to wait out the time limitations with a long-term outlook.

Secondary marketplaces (Forge, Hiive, EquityZen, Nasdaq Private Market)

Several secondary marketplaces have established themselves as market leaders, each carrying a different list of private space companies and a different level of price reporting transparency.

Hiive operates closest to a live order book, similar to a traditional stock exchange, with an anonymous book matching bid and ask prices. It is key for price discovery, letting users see real market depth as deals happen, and offers direct share transfers as well as fund-based buying. Minimum order sizes start at $25,000.

Forge is structured for institutions, offering broker-dealer matching and institutional data feeds, handling custody and custom fund structures. It handles big block sales of $100,000 to millions, tracking individual orders and custody, with 2% to 5% fees.

EquityZen is the closest product to a retail portal, still requiring accredited status. It bundles orders into SPVs, clears rights of first refusal, and removes most of the risk of a deal falling through. Deal sizes are relatively small — $5,000 to $10,000 — with a 2.5% transaction fee.

Nasdaq Private Market focuses on the issuer company's needs and suits company-backed liquidity programs such as tender offers and structured secondary sales. Even accredited investors cannot access small-scale direct deals. Prices are set by companies, volume caps apply to sellers, and the issuing company controls access to its shares with standardized terms for each sale event.

Feeder funds and SPVs (UpMarket, PrivateSharesFund)

Accredited retail investors still create significant demand for private space shares. As a workaround, Special Purpose Vehicles and feeder funds allow entities to buy small amounts while pooling orders. An SPV targets a specific company and sits on its cap table as a single line item. A feeder fund is another aggregation vehicle that invests into a third-party larger fund, institutional venture fund, or multi-asset pool, and can channel funds into a portfolio of multiple companies.

UpMarket uses a feeder fund model, also called an access fund. Buyers do not acquire shares directly but first buy into an UpMarket Feeder Fund, which then allocates capital into a third-party institutional fund, venture vehicle, or primary allocation. UpMarket suits accredited investors interested in $5M minimum purchases and access to Tier 1 institutional venture funds.

The PrivateShares fund offers continuous entry. It holds a portfolio of late-stage private companies, as well as PIPEs and SPVx. Investors buy into the fund for exposure and can observe its Net Asset Value. It charges fees of 2.46% to 2.74% while carrying out quarterly repurchases. PrivateShares suits small-scale purchases from accredited investors, as low as $2,500. It also does away with the accredited investor rule and may be one potential entry point for retail, though it does not allow targeting a specific private space company.

The indirect route: funds that hold pre-IPO space positions

Funds offer exposure to pre-IPO positions under more flexible regulations. While most other entry routes are tailored to big funds or accredited investors, some funds open access to retail buyers through pooled investments. For general retail, this is available through public ETFs and public mutual funds. The other option is closed-ended funds focusing on a specific company. Public funds are more liquid and more actively traded, while closed-ended funds offer only limited quarterly redemptions.

Employee-equity purchases and why they're the messiest

Employee-equity purchases are another entry point, open only to accredited investors. Sales are subject to longer deadlines due to the company's right of first refusal, running up to 300 days, and the company retains the right to block transfers and buy back shares. Transferring ownership may require board approval and only happens during company-sanctioned liquidity periods limited to specific tender offers. Not all employees can sell; there are limits of 1–2 transfers per year, or sales restricted to tenured, long-term employees.

Pricing of employee shares is complex and may lead to discrepancies between a company's internal price and the secondary market price. Additional actions and payments may be required of employees even when they have the right to sell. Employees are subject to additional taxes if selling stock above company valuations, and may decide to hold until the IPO instead of exercising stock options to avoid a tax bill on paper valuations after the IPO.

What This Actually Costs You

Acquiring private space stocks costs both time and money. Minimums run from $2,500 for some retail funds to $100K for large-scale vehicles. Some platforms charge 2% to 5% fees on purchases. Another cost is carry fees, where the fund takes a payment from net capital gains; carry can vary between 10% and 20% and is not paid until the IPO. Private stocks pay no dividends and may be held for years before an eventual IPO. Selling on a secondary market may lead to losses or incur additional fees.

The Risks Nobody Puts in the Listicle

Private space companies enjoy elevated hype, but this may not translate into net gains from their stock. In the pre-IPO market, low liquidity is the biggest risk; often neither retail nor larger accredited investors or funds have a clear exit date. Investors lack clear information on their investment's worth — cost may be based on illiquid deals, the company's own estimate, or outdated information, and some stocks may be locked up. Space companies also face the risk of total failure of their cutting-edge technologies and no real commercial success.

Final Verdict: The Honest Answer

While private space companies are hot, investing in them is not straightforward. As of 2026, there are only limited SPV or fund opportunities for each of the leading private space companies. Opportunities vary by company and may discourage some investor types. Even accredited retail investors cannot access all early opportunities and face the same low-liquidity risks, non-transparent valuations, and long mandatory waiting periods in some cases. Investing in private space companies in 2026 also happens with no time limit until an IPO is announced. Most of these companies gained attention after the SpaceX (Nasdaq:SPCX) IPO, but none can guarantee a similar listing trajectory — so the practical next step for most readers is checking their own accreditation status and the minimums and fees listed above before pursuing any specific route.