Supermicro issued a preliminary business update on Tuesday, October 20, for the first fiscal quarter of its 2027 year, ended September 30, 2026. Revenue is estimated at $18.5 billion to $19.5 billion - against the guidance the company itself gave for that quarter, $14.5 billion to $15.5 billion.
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This is not a quarterly report, and it is important to start there. The release contains two lines only - a revenue estimate and a gross margin estimate - and includes no net income, no earnings per share, no cash flow, no balance sheet and no guidance for the next quarter. The company writes explicitly that the figures are unaudited, based on management's estimates, and may differ materially once the financial statements are finalised.
The full report comes on November 3, 2026, with an earnings call at 5:00 p.m. Eastern Time.
What was reported
| Preliminary estimate | Guidance given | Gap at the midpoint | |
|---|---|---|---|
| Revenue (billions of dollars) | 18.5 - 19.5 | 14.5 - 15.5 | about +26.7% |
| Gross margin | 12.0% - 12.5% | 10.4% - 10.8% | about +1.65 pts |
Source: Supermicro's press release of October 20, 2026, filed with the SEC on Form 8-K as Exhibit 99.1. The midpoint gap calculation is mine, from the figures in the release.
The explanations the company gives, in its own words:
- The revenue gap - "primarily due to increased demand for AI platforms"
- The gross margin gap - "primarily due to customer and product mix"
Why this is unusual
Two points are worth noting, and they are not the same point.
The first, the magnitude. The midpoint of the new estimate, $19.0 billion, is about 26.7% above the midpoint of the guidance, $15.0 billion. A gap that size between the guidance a company gives itself and the actual result is not a matter of precision - it says something in demand changed inside the quarter, after the guidance was given.
The second, the direction of the margin. In the server business, a sharp rise in volume sometimes comes at the expense of pricing: large deals close at lower margins. Here the opposite happened - revenue beat the guidance and gross margin beat it too, from 10.4%-10.8% to 12.0%-12.5%. The company attributes this to mix.
Still, it is worth holding the proportion: 12.0% to 12.5% are thin gross margins even so. They describe a business of assembly and integration, not a business of intellectual property.
What is not in the release
To read this quarter properly, the missing lines are the ones the release does not contain - and I prefer to note the absence than to guess:
- Net income and earnings per share. Gross margin is not profit. Operating expenses, working capital financing and taxes are not in the release.
- Cash flow. A business whose revenue grows sharply has to fund inventory and components in advance, so negative cash flow during a growth period is a possible and legitimate outcome. There is not a word about it.
- The year-over-year comparison. The release compares the estimate to the company's own guidance, not to the year-ago quarter. That is a useful comparison for the question "did they surprise", and not for the question "how much did they grow".
- Guidance for the next quarter. None.
The stock
I was not able to verify the trading reaction to this update, so I am not reporting it. The data provider I work with reached its daily request limit before I got to this ticker. A figure that has not been verified does not get written. I will update the article when I have it.
הזווית שלי
דעה אישית של אילן אברמוב - לא ייעוץ ולא המלצה
The most notable thing in this update is what it says about this company's forecasting.
A gap of about 26.7% between the midpoint of the guidance and the midpoint of the estimate is not analysts missing - it is management missing itself, in the favourable direction. A company that builds servers to order is supposed to see its own backlog; when the result comes in a quarter above the guidance it gave weeks earlier, that means orders arrived inside the quarter at a pace management did not plan for.
And that cuts both ways. Favourably: demand for AI platforms is strong enough to break the planning. Unfavourably: the company's forecasting ability is itself a data point, and a company that misses itself by a quarter to the upside can miss itself to the downside too. Anyone relying on its next guidance should price that in.
And what I am careful not to say: that this is a good report. I have no profit, no cash flow and no year-ago comparison - the three things that determine whether a quarter was good. I have two lines that beat guidance, and they are preliminary and unaudited. Until November 3 this is news about demand, not a report about a business.
What I will follow in the full report: cash flow, and working capital - because growth a quarter above plan is built on inventory bought with cash.
(To be clear: this is my personal opinion only. Nothing here is a recommendation to take any action, and there is no forecast here of the price of any security.)
Ilan Abramov, the author, or anyone on his behalf may hold some of the securities or funds mentioned in this article.
