Capital-intensive companies raise against physical milestones, not revenue curves. Atom Computing's record — $100M Series C within $300M lifetime capital — shows steady large rounds. Sequence each raise around one demonstrable technical result with a fixed date.
Key takeaways
- Deep-tech rounds are sequenced against demonstrable technical milestones, not revenue curves.
- Corporate venture arms appear where the technology touches their infrastructure roadmap.
- Build a bridge plan before you need one — physical milestones slip more often than software ones.
In software, a round buys months of engineering. In hardware and quantum, a round buys a physical result — a device, a yield, a demonstrated error rate — and physics does not accelerate to fit your runway.
The record here belongs to Ben Bloom, founder of Atom Computing (Boulder, Colorado).
| | | |---|---| | Founder | Ben Bloom | | Company | Atom Computing (Boulder, Colorado) | | Total raised | $300M | | Latest round | Series C — $100M | | Round date | June 2026 | | Named participants on record | Third Point Ventures, DCVC, Cisco Investments |
Two hundred million before the Series C. That is the shape of a company whose progress is measured in hardware generations.
Long-lead components with quoted delivery windows, not estimates.
Specialist hires whose availability, not salary, is the constraint.
A schedule buffer, because the first attempt at anything physical rarely works.
A useful discipline: cost the milestone, then ask what happens if it takes 50% longer. If the answer is insolvency, the round is too small regardless of dilution.
Technical-specialist funds can evaluate the physics. Corporate venture arms invest where your technology intersects their own roadmap — they are buying visibility and early access as much as return. Both are patient in a way generalist growth funds are not, which matters when milestones are measured in years.
Because slippage is the base case, the bridge conversation should happen before you need it. Ask existing investors, at the time of closing, what conditions would make them willing to extend. Written down, that answer is an option. Unasked, it is a crisis.
1. Define the next milestone as a measurable physical result. 2. Cost it including facility, long-lead components and specialist hiring. 3. Test the plan at 150% of the expected schedule. 4. Prioritise investors who can evaluate the physics. 5. Agree bridge conditions with existing investors at close, not at the point of need.
Amounts, stages, dates and named participants are documented. Valuation, terms and board composition are not.
Frequently asked questions
- How do capital-intensive companies decide round size?
- By costing the next demonstrable technical milestone, including fabrication and facility time, then adding schedule buffer because physical milestones slip.
- Why do corporate investors appear in these rounds?
- Because the technology intersects their infrastructure roadmap. They buy visibility and early access rather than pure financial return.
- Where do these figures come from?
- Structured founder funding records: total raised, round stage, round amount, round date and named participants.
