Atom Computing is a Berkeley-based quantum computing company founded in 2018. It develops neutral-atom quantum computers and related hardware for enterprise and research use.
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| Date | Round | PPS (split-adj.) | Valuation |
|---|---|---|---|
| Jun 2026 | Series C | $2.06B | |
| Jan 2022 | Series B |
Atom Computing said it has raised more than $300 million, including a $100 million Series C led by Third Point Ventures. The company also disclosed a $100 million Letter of Intent with the U.S. Department of Commerce to accelerate commercial-scale fault-tolerant systems.
Atom Computing reported the first full demonstration of quantum error correction using a toric code on a neutral-atom quantum computer. The company said logical error rates fell as more qubits were added and error correction was sustained over many rounds.
Atom Computing signed a Letter of Intent with the U.S. Department of Commerce for $100 million in proposed funding. The money is intended to support engineering, manufacturing, and supply-chain work for utility-scale quantum systems.
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No. As of August 2026, Atom Computing is a private company and does not trade on any public stock exchange. Accredited investors can access Atom Computing shares through UpMarket, a FINRA-registered broker-dealer that specializes in pre-IPO investments.
Atom Computing does not have a public stock price because it is privately held. The most recent known share price comes from its last funding round. Pre-IPO share prices on the secondary market may differ from the last round price depending on supply, demand, and market conditions.
Yes. Accredited investors can indicate interest in Atom Computing shares through UpMarket by filling out the form on this page or creating an account at upmarket.co. All pre-IPO offerings are subject to availability and require a $50,000 minimum investment. UpMarket is a FINRA-registered broker-dealer and has brokered more than $500M in alternative investments since 2019.
Pre-IPO investments carry significant risks. Atom Computing shares are illiquid, meaning there is no public market to sell them quickly. There is no guaranteed exit timeline or return. The investment is speculative in nature, and investors should be prepared for the possibility of total loss. Valuations of private companies can fluctuate substantially between funding rounds. Investors should consult their financial advisor and review all offering documents before investing.
In a pre-IPO transaction, accredited investors purchase shares from existing shareholders (such as employees, early investors, or other holders) through secondary market platforms. The company itself does not issue new shares in these transactions. UpMarket facilitates these trades as a FINRA-registered broker-dealer, handling compliance, documentation, and settlement on behalf of both parties.
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Atom Computing develops neutral-atom quantum computers and related hardware for enterprise and research use, generated $8.8M in 2025 revenue and topped $300M in funding for scale-up, accredited investors can access Atom Computing stock through UpMarket.
