How to assess cash runway and dilution in a quantum company

Estimate a quantum company’s cash runway from usable liquidity and the cash needed to reach its next commercial or technical milestone. Accounting losses and headline funding amounts are insufficient. Assess operating outflows, capital expenditure, obligations and financing conditions, then examine how additional shares could change existing ownership.

Usable liquidity and cash requirements

A runway calculation answers a timing question: how long can the company fund a specified plan before it needs additional finance or must change that plan? The opening balance therefore requires scrutiny. Separate unrestricted cash, investments that can be realised when needed, restricted balances and receivables that depend on further work. A government award, an undrawn facility and money already received are different resources. A large headline total can hide a mismatch between when funds become available and when suppliers must be paid.

The cash-flow statement is the starting point for expenditure, but it needs interpretation. Operating cash use differs from accounting loss because non-cash charges and changes in working capital enter the reconciliation. Equipment purchases and acquisitions may sit in investing activities. The SEC’s Item 303 liquidity framework requires discussion of material cash requirements and capital resources, making the accompanying management discussion an essential part of analysis. A favourable quarter caused by a customer deposit should not automatically determine the spending assumption for every subsequent quarter.

Build the forecast around the programme rather than a constant burn rate alone. Hiring, fabrication runs, facility commissioning and customer acceptance can create steps in expenditure. A system programme may consume cash for components months before it receives the final payment. Delays can increase both staffing costs and the period for which inventory is financed. Ask which costs can be deferred, which would destroy technical progress and which remain payable even if management changes the roadmap.

Runway and share-dilution calculations

A simple illustration makes the boundary visible. Suppose a company has £120 million of usable liquidity, needs to retain £20 million for committed obligations and a minimum operating reserve, and expects net cash consumption of £10 million per quarter for the specified plan. The available £100 million implies ten quarters under those assumptions. If consumption rises to £15 million after a manufacturing expansion, the same amount covers about 6.7 quarters. Neither estimate is a forecast without the underlying schedule and uncertainty range.

Financing can extend the programme while changing ownership. If a company with 100 million shares issues 25 million new shares, a holder who does not participate retains 80% of their previous percentage ownership, before other changes. That does not establish whether the transaction creates or destroys value: the company also receives resources. Assess the price paid, fees, restrictions and the milestone the proceeds can finance. A larger corporate cash balance and a smaller ownership percentage can occur together.

Contingent dilution and financing conditions

Potential dilution is broader than one equity round. Review options, restricted stock, warrants, convertibles and acquisition consideration, distinguishing already issued shares from contingent rights. GAAP diluted earnings-per-share calculations can exclude instruments in a loss period because of their accounting treatment; that does not make the economic claims disappear. Avoid assuming that every instrument will exercise, and do not count its potential cash proceeds without the corresponding terms. A scenario should show both resources received and shares created.

Government-linked financing requires the same two-sided assessment. The Rigetti securities agreement disclosed in September 2026 illustrates that public support can be accompanied by share issuance, transfer restrictions and repurchase provisions. Such terms cannot be inferred from the award ceiling. Map the cash and ownership consequences separately, including conditions that might delay payments or return shares. The relevant question is what the company and each shareholder can fund and own under the executed arrangement.

Runway analysis is most useful when connected to a decision point. Determine whether the available resources reach a reproducible product, an accepted installation, a further financing round or only another development stage. Then test a slower customer payment, a failed fabrication run or a delayed financing. The result is a range of financing needs tied to identifiable events, rather than a single survival date. Updating that range after each filing is more informative than treating an unusually large cash balance as permanent protection.