The simple version

Companies publish forecasts. Usually the forecast is about revenue, or profit, or how many units they expect to sell.

Some companies publish a forecast of how much cash they expect to lose over the year. They put a dollar range on it, they repeat it every quarter, and investors hold them to it.

The numbers

• Ginkgo Bioworks Holdings, Inc. stated that it reaffirms expected total cash burn of $125 million to $150 million in 2026, under the heading Full Year 2026 Outlook (Ginkgo Bioworks Holdings, Inc., Form 8-K exhibit 99.1, second quarter 2026 earnings release, filed August 5, 2026)
• The same release refers to its full year 2026 outlook including the total cash burn guidance, which identifies the figure as the company's own guidance rather than an outside estimate (same filing)
• The company presents the range as negative figures, written as $150 million to $125 million in parentheses, which is the convention for cash leaving the business (same filing)
• No neutral standard-setter definition of cash burn was located for this article, so the description below is ours and claims no authority (stated limitation)

Why losing money on purpose is a plan

A company that is not yet profitable is spending more than it takes in, by design. It is building something, and the building costs money before the something earns any.

For that company, profit is the wrong question for a while. The question that actually binds is how long the money lasts, because when the cash stops the building stops regardless of how promising it was.

Cash burn is the answer to how fast. It is the amount of cash leaving the business over a period, net of what comes in. Guiding to it publicly is a company saying it knows the number matters and putting a range on it.

Runway is one division problem

Runway is how long the cash lasts at the current rate of burn. The arithmetic is cash on hand divided by burn per year, and the answer is in years.

That is the whole calculation, and its simplicity is the point. Anyone with a balance sheet and a burn forecast can do it, which is part of why a company would rather set the burn number itself than leave others to guess at it.

It is also why reaffirming a burn forecast carries information that reaffirming most forecasts does not. The company is saying the clock has not changed.

The Real Cost lens on a changing burn rate

A company can hold exactly the same cash and have a very different amount of time. Here is the arithmetic, using round numbers we chose that belong to no real company.

• A company holding $500 million and burning $150 million a year has about 3.3 years of runway.
• The same company burning $200 million a year has 2.5 years.
• The cash did not change. Only the rate did, and it cost about ten months.
• Going the other way, cutting burn to $100 million turns the same $500 million into 5 years.

These figures are ours, picked to show the shape of the division, and they describe no actual company's position. The durable point is that runway is a ratio, so it moves when either number moves, and burn is usually the one management can act on.

What this means

When a company's shares move on cash burn news, the market is not reacting to a loss. Losses were expected and published in advance. It is reacting to a change in the number, or to a change in confidence that the number will hold.

For anyone reading about a company that is not yet profitable, burn and runway say more than the headline loss does, and both usually sit in the filings rather than the headline.

What this is NOT

This article takes no position on Ginkgo Bioworks Holdings, Inc. or on any security, and it is not a recommendation to buy, sell, hold, or avoid anything. It does not state or imply that any company will run out of money, will need to raise capital, or faces any particular outcome, and it makes no assessment of any company's financial health. The company figure cited is the company's own published guidance as stated in a filing dated August 5, 2026, reported as guidance and nothing more, and a forecast is not a result. The runway calculations in the Real Cost section use dollar figures we chose as illustrations, they are not drawn from any company's balance sheet, and they must not be read as an estimate of anyone's runway. Cash burn is defined differently by different companies, so a figure is comparable to itself over time but not reliably to another company's, and no neutral definition is cited here because none was located.

Sources

• Ginkgo Bioworks Holdings, Inc., Form 8-K exhibit 99.1, second quarter 2026 earnings release, filed August 5, 2026: https://www.sec.gov/Archives/edgar/data/1830214/000162828026053319/ex991earningspr.htm