capex

SpaceX grew 161%. Here's what the cash flow statement says.

By Samer Azar, Fractional CFO · 2026-11-03 · 4 min read

Key Takeaway: Growth tells you the demand is there. Cash tells you how long you can wait for it to pay. Before you celebrate a growth number, put capex next to EBITDA and your biggest customer next to revenue.

Dear reader,

SpaceX just filed its quarter. Revenue grew 161%, from $5.6 billion to $14.6 billion, against the same quarter last year.

Everyone quoted that number. I went straight to the cash flow statement.

In the same quarter, operations brought in about $9.6 billion. Building cost $19.6 billion.

That's about $10 billion short. In three months.

Watch: SpaceX is burning $10B a quarter to grow 161% (about 6 min)

Where the $10 billion comes from

SpaceX doesn't report free cash flow. So this is my arithmetic, from their own filings.

They give cash flow for nine months, not for the quarter. So I take two filings and subtract.

• Operating cash: $13.1 billion for nine months, minus $3.5 billion for six months. Q3: about $9.6 billion.

• Capex: $48.1 billion for nine months, minus $28.5 billion for six. Q3: $19.6 billion.

$9.6 billion in. $19.6 billion out. Over nine months, the gap is $35 billion.

And next quarter, capex is guided at $35 to $40 billion. Nearly double.

So who paid? The IPO. It brought in $85.7 billion, net. At 30 September, SpaceX held $89.9 billion of cash and short-term securities, against $38.8 billion of debt and finance leases.

That's a lot of runway. It's still runway, not profit.

Three things that could break it

1. They spend more than twice what they earn. Q3 capex was $19.6 billion against $8.8 billion of adjusted EBITDA. That's 2.2x. Over nine months, 3.6x.

2. The AI business turned, on one customer. It lost $6.4 billion last year. This quarter it made $431 million. But one AI customer was 34.5% of all SpaceX revenue, up from 19.5% the quarter before. The filing doesn't name it, and neither will I. On the call, Musk said the plan is short-term contracts at spot rates rather than long-term deals.

3. One business pays for the rest. Over nine months, Starlink made $5.2 billion of operating profit. Rockets and AI lost $4.5 billion between them.

One more line worth knowing: operating income was $2.8 billion, net income $4.4 billion. The $1.6 billion difference is interest, other income and a tax benefit, not the business.

What share of your revenue is your biggest customer: under 10%, 10 to 30%, or more than 30%? Reply with your number.

Run the same test on your numbers

You don't need a $14.6 billion quarter for this to bite. The shape is the same at €2 million.

Three moves for Monday:

1. Put last quarter's capex next to your EBITDA. If capex is bigger, write down who is paying for the gap, and until when.

2. Put your biggest customer next to your revenue. Then check the contract: does it run longer than the commitment you made to serve it?

3. Split profit from cash. Take net income and list every line that isn't operating cash: interest, one-off gains, tax credits, customer money paid upfront.

Growth tells you the demand is there. Cash tells you how long you can wait for it to pay.

The check I want on every pack

Files from building the AI CFO.

Reading the SpaceX filing took two documents and three subtractions to get one honest number. Every figure on my screen in the video traces back to a line in a filing.

That's the standard I hold our own packs to. Code computes every figure from the ledger. The model writes the words around them and never types a number. Every figure links to its source, and nothing goes out until a person signs.

Steal it:

• Inputs: the ledger export and your definitions, one line per metric.

• The test: every sentence in the commentary points to one number, and every number points to its ledger lines. If it can't, it comes out.

• The human: whoever signs reads the exceptions first, then signs one exact version.

Zero-Click CFO: zero clicks to prepare, one click to sign.

If you sign monthly packs for clients or for your own company, this is the system our own practice runs on. Your packs arrive prepared and tied out to the ledger. You review what needs you, then sign. Nothing goes out without you.

Start with 30 minutes on one of your packs. No slides, and no client files.

Which describes you best? One tap. It tells us what to send you.