Cerebras 3Q26: the build stayed on schedule, which is what our target already assumes
Core cloud revenue of $223m was 4% above our estimate and 205MW was energised, with the 330MW target for 1Q27 intact. Backlog rose to $26.1bn. Hold and $180 target unchanged. Sample update with illustrative figures and sources.
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Key takeaways
- Core cloud revenue of $223m was 4% above our $214.7m estimate and grew 75% in the quarter1 (source: Form 8-K, Exhibit 99.1, Q3 2026 earnings release, opens in a new tab)
- Backlog grew to $26.1bn, and the company now expects about 24% of it within 24 months, up from 22%2 (source: Form 10-Q, Q3 2026 Form 10-Q, opens in a new tab)
- Management kept the 330MW target for the end of 1Q27 and said 205MW was energised at quarter end3 (source: Earnings call transcript, Q3 2026 earnings call, opens in a new tab)
- Gross margin fell to 38.9% from 41.5% as new halls carried start-up costs before full use4 (source: Earnings call transcript, Q3 2026 earnings call, opens in a new tab)
- Hold and $180 unchanged: a build on schedule is what our target already assumes5 (source: Penmark initiation, CBRS, page 25, opens in a new tab)
3Q26 results
| Line | Reported | Our estimate | Consensus | vs our estimate | vs consensus |
|---|---|---|---|---|---|
| Revenue | $419m | $415m | $421m | +1.0% | −0.5% |
Investment thesis
The build is the risk, and this quarter it stayed on schedule3 (source: Earnings call transcript, Q3 2026 earnings call, opens in a new tab). Our target already assumes that, so the result confirms rather than raises our value. Each quarter of delay would cost about $15 a share and two quarters about $325 (source: Penmark initiation, CBRS, page 25, opens in a new tab). Customer concentration is unchanged: one customer was 61% of revenue6 (source: Form 10-Q, Q3 2026 Form 10-Q, opens in a new tab).
Valuation
Our $180 target is unchanged at 7.5x FY28E sales of $5.84bn, discounted, plus net cash7 (source: Penmark initiation, CBRS, page 22, opens in a new tab). OpenAI remains about 79% of RPO on our inference8 (source: Penmark initiation, CBRS, page 23, opens in a new tab).
Our estimates
| Line | FY26E | FY27E | FY28E |
|---|---|---|---|
| Revenue | $1,508m | $2,885m | $5,844m |
Risks to our view
- Customer concentration: OpenAI is about 79% of RPO, a risk worth about $57 a share8 (source: Penmark initiation, CBRS, page 23, opens in a new tab)
- Capacity execution: a two-quarter build slip costs about $32 a share5 (source: Penmark initiation, CBRS, page 25, opens in a new tab)
- Utility interconnection for the 2H27 halls, which management says it does not fully control9 (source: Earnings call transcript, Q3 2026 earnings call, opens in a new tab)
- Upside risk: gross margin recovering above 42% as the new halls fill4 (source: Earnings call transcript, Q3 2026 earnings call, opens in a new tab)
Sources
- 1Form 8-K, Exhibit 99.1, Q3 2026 earnings release (opens in a new tab)Table: Condensed results
- 2Form 10-Q, Q3 2026 Form 10-Q (opens in a new tab)Note 3, remaining performance obligations
- 3Earnings call transcript, Q3 2026 earnings call (opens in a new tab)Chief Executive Officer
- 4Earnings call transcript, Q3 2026 earnings call (opens in a new tab)Chief Financial Officer
- 5Penmark initiation, CBRS, page 25 (opens in a new tab)Cerebras Systems: the contract is signed, the build is the risk (Oct 7, 2026)
- 6Form 10-Q, Q3 2026 Form 10-Q (opens in a new tab)Note 3, customer concentration
- 7Penmark initiation, CBRS, page 22 (opens in a new tab)Cerebras Systems: the contract is signed, the build is the risk (Oct 7, 2026)
- 8Penmark initiation, CBRS, page 23 (opens in a new tab)Cerebras Systems: the contract is signed, the build is the risk (Oct 7, 2026)
- 9Earnings call transcript, Q3 2026 earnings call (opens in a new tab)Chief Executive Officer, Q&A
This sample update and the company documents it cites are illustrative.