MaxLinear (MXL) Q3 2026 earnings review
MaxLinear's data-center sales triple, but cash flow turns negative
MaxLinear's chips for AI data centers now make up most of its sales, but the growth is using up cash faster than the company earns it. Revenue rose 72% from a year ago, and sales of infrastructure chips tripled. Chief executive Kishore Seendripu said the results "underscore the significant growth inflection underway across MaxLinear’s overall business", and the plan for the fourth quarter points to about 83% growth by our math. Operating cash flow was negative, and the company borrowed from its bank line to cover the gap.
| Revenue | $218.1M +72% from a year ago |
|---|---|
| Infrastructure revenue (chips for AI data centers) | +210% from a year ago; +47% from last quarter |
| Operating margin, excluding one-offs | 29.5% 12.1% a year ago |
| Fourth-quarter revenue outlook | $240–260M middle of the range: 83% growth by our math |
⚖️ Verdict: 🟢 Bullish
The story got better because the plan for next quarter stepped up again and costs did not follow, so the operating margin excluding one-offs now sits inside the long-term range management described only last quarter. Gross margin moved up as well after a run of flat quarters. The bad news: the ramp consumed cash, with receivables and prepayments climbing far faster than sales, and the company drew $40 million from its banks to fund it.
The question now is whether the cash comes back. One answer is that the money bought wafers and packaging for chips that ship next quarter, so cash flow turns positive as revenue lands. The other is that chips are going into a distribution channel with no customer commitments behind them, as happened before the 2023 downturn. Fourth-quarter operating cash flow and the distributor share in the quarterly filing will tell.
🐂 Bull Case
Data-Center Chips Now Make Up Most Sales
MaxLinear sells chips that move data inside AI data centers, reported as its infrastructure business, alongside older chips for cable and fibre broadband. Chief executive Kishore Seendripu tied the quarter to "the volume ramp of our Keystone PAM4 DSP platform", the company's chip for 100G-per-lane optical links, and to "the strength of our expanding infrastructure portfolio".
The infrastructure line again grew faster than everything else, "led by strong growth in high-speed optical interconnects". Keystone is in high-volume production, and Rushmore, its next chip for 1.6T links at 200G per lane, "is now in customers' hands and progressing through initial qualification".
- Infrastructure revenue: up 210% from a year ago and 47% from the second quarter
- Infrastructure share of sales: about 57% by our math, from 50% last quarter
- Revenue outside infrastructure: up roughly 8% from a year ago by our math
- Fourth-quarter revenue outlook: $240–260 million, against $136 million a year earlier
This matters because the plan now rests on one line. The fourth-quarter outlook asks for about 83% growth by our math, so infrastructure must step up again while Rushmore is still in qualification. The ramp has run above its own plan for six quarters, which argues it can.
What to watch: the infrastructure line in the fourth-quarter results. A step smaller than the roughly $32 million the overall plan adds would mean the older broadband lines are carrying part of the growth.
Costs Rose 12% While Sales Grew 72%
MaxLinear reports a profit measure that leaves out stock pay, bonus accruals and deal costs. On that measure the cost of running the business barely moved while revenue climbed, so most of each extra dollar of sales reached operating profit. Finance costs stayed small and the tax charge was only $1.5 million.
- Operating expenses excluding one-offs: $66.5 million, up 12% from a year ago
- Those expenses as a share of revenue: 30.5%, from 47.1% a year ago
- Operating margin excluding one-offs: 29.5%, from 12.1% a year ago
- Sales and administration under accounting rules: $36.9 million, down 22%
The fourth-quarter plan keeps costs in the same band while revenue climbs again. By our math that puts the margin excluding one-offs near 33.5% at the middle of the ranges, inside the 30–35% range management described last quarter as its long-term goal. That goal carried no date, and the plan reaches it next quarter.
What to watch: operating expenses excluding one-offs in the fourth quarter against the $65–70 million plan. A figure above the range would show the ramp needs more engineers and support staff than the plan assumed.
Gross Margin Reached 60% at Last
Gross margin, the share of revenue left after the cost of making the chips, had sat between 59.1% and 59.6% excluding one-offs for five quarters. That was the puzzle: data-center chips carry a higher margin than the broadband lines, management said last quarter, yet the shift toward them produced almost no lift, and rising wafer, packaging and test costs took the blame.
This quarter the margin reached 60.0%, half a point above the second quarter. The fourth-quarter plan moves the range up to 59–62%, the highest the company has set. The gain is small against a mix shift of about seven points by our math, so the cost drag is easing rather than gone; but both the result and the plan now point up.
What to watch: gross margin excluding one-offs in the fourth quarter against the 60.5% middle of the range. A reading at or above it, with infrastructure still gaining share, would show the higher-margin mix reaching the blended figure.
🐻 Bear Case
Cash Flow Turned Negative Despite Record Profit
Seendripu promised "sustained growth, expanding profitability, and long-term value for our shareholders", and the accounting profit was real at $28.9 million. But MaxLinear used $13.6 million of cash in its operations, because the money went into receivables, inventory and a balance of prepaid and other current assets that management said last quarter holds wafer prepayments. The other side of the argument: those payments secure scarce supply for a ramp that has run above plan for six quarters.
- Operating cash flow: minus $13.6 million, against plus $10.1 million a year ago
- Prepaid and other current assets: $121.6 million, up $45.8 million in the quarter
- Accounts receivable: up 44% from the second quarter, against revenue up 29%
- Borrowing: $40 million drawn on the bank line, taking long-term debt to $164.1 million
- Cash and equivalents: $81.1 million, from $111.9 million a year ago
This matters because the chips are paid for before customers commit to them. The company said last quarter that its customers give it no long-term purchase commitments, while its own supplier orders are firm. If a large customer pauses, the paid-for wafers become inventory, which is how the 2023 downturn began.
What to watch: operating cash flow in the fourth quarter, when the chips paid for this quarter should ship against the $240–260 million plan. A second negative quarter would mean the ramp consumes cash faster than it earns it, with the bank line as the buffer.
MaxLinear Pays Its Bonuses in Shares
MaxLinear settles its annual bonus in shares rather than cash, and it excludes both the bonus accrual and ordinary stock pay from its preferred profit measure. The company said "a substantial portion of bonus awards under our fiscal 2026 program will be settled in common stock in the first quarter of fiscal 2027". It bought back no shares this year, after $20 million in late 2025.
- Diluted shares: 97.7 million, up 11% from a year ago; the Q4 plan says 99.7 million
- Stock pay and bonus accruals: $29.0 million, or 13% of revenue
- Profit per share: $0.30 under accounting rules, $0.62 excluding one-offs
This matters because the gap between the two profit figures is what shareholders give up. Stock pay fell as a share of revenue, from 26% a year ago, but the dollar amount still rose and each award becomes new shares, so every holder's slice of the profit shrinks as the profit grows.
What to watch: the diluted share count in the first quarter of 2027, when the 2026 bonuses convert to stock. A jump well beyond the 99.7 million planned for the fourth quarter would show how much of this year's profit went to employees.
Risks this quarter didn't answer
Six standing concerns got no new number in the release or the slide deck. Each is readable in the quarterly filing or on the call, neither of which is in these materials, so none of them moved either way this quarter.
- Sales through distributors: 48% of revenue last quarter; the filing's revenue note shows whether the share kept rising.
- Customer concentration: management expects a handful of customers to drive most volume; the filing names the largest customer's share.
- Links without a DSP: some 200G-per-lane optical links need no DSP, management conceded last quarter; the call transcript carries any defence.
- Optical data-center revenue: the $210–230 million target for 2026 set last quarter is not restated; the full-year figure arrives with the fourth-quarter results.
- Silicon Motion arbitration: the release repeats the risk of "potential payment of damages" with no status and no accrual.
- Singapore tax incentives expire in March 2027; the plan gives a tax charge for one quarter only.
👓 Other Themes
Four New Products Target AI Data Centers and Cable
Beyond Keystone, MaxLinear now has Rushmore, its 1.6T optical chip, in qualification; Carmel, a USB-to-UART chip for "AI data center console access"; and RackCommander, a "control plane portfolio for next-gen AI infrastructure". For cable operators it launched Puma 9, "enabling operators to accelerate AI-ready DOCSIS 4.0/3.1+ multi-gig services". None reports revenue yet, and Rushmore's first revenue was placed in 2027 last quarter.
MaxLinear Raises Its Credit Line to $200 Million
MaxLinear amended its loan agreement with Wells Fargo and other banks to "increase the amounts available under the revolving credit facility by $70 million to $200 million". It borrowed against the line during the quarter, having drawn and repaid a smaller amount in the second quarter, so the larger facility is now the backstop for the working capital described above.
💲 Other KPIs
Inventory rose 32% from a year ago, slower than revenue, so days of inventory fell to about 115 from 144 by our math. The dollar stock of chips has climbed every quarter since December as the ramp built, but shipments are outrunning the build; this line is not where the cash went.
Purchases of equipment and intangibles came to 4.4% of revenue, from 5.3% a year ago, because outside foundries make the chips. Nine-month spending is $15.0 million against $16.1 million last year, so the cash drain this year is working capital, not plant.
🔮 Guidance
New. The plan calls for about 83% growth from a year earlier at the middle of the range, by our math. That is a $32 million step from this quarter, smaller than the $46 million step planned for this one. The record runs one way: six quarters above the middle, and if the pattern holds the quarter lands near $255 million. The full year would then reach about $774 million by our math.
New. The middle of the range is 60.5%, half a point above this quarter and the first time the company has set the middle above 60%. Under accounting rules the range is 58–61%. A higher range after a flat year means management sees the input-cost drag easing as volumes rise.
New. Spending stays in the same band as this quarter's $66–71 million plan while revenue climbs, so by our math it falls to 27% of revenue at the middle, from 30.5%. Under accounting rules the range is $96–101 million, which carries about $29 million of stock pay and bonus accruals at this quarter's rate.
New. The plan assumes roughly double the $2.1 million booked this quarter, because the company drew $40 million on its bank line during the quarter and will carry it for the full period.
New. The cash-like tax charge stays at $1.5 million, under 2% of the operating profit the plan implies by our math. The benefit under accounting rules is non-cash. Nothing in the plan says what the rate becomes after the Singapore incentives expire in March 2027.
New. Up from 97.7 million this quarter and from the 99 million planned for this quarter. On the middle of every range, the plan implies about $0.79 per share excluding one-offs by our math, against $0.62 delivered this quarter.
❓ Key Questions
How much optical data-center revenue did MaxLinear book in 2026?
The $210–230 million target set last quarter is not restated in the release or the deck, and the company has never reported an actual figure. Without one, the three raises cannot be checked.
What is inside the $122 million of prepaid and other assets?
The balance rose $46 million in one quarter and is almost four times a year ago. Investors need the split between wafer prepayments and other items, and when it turns back into cash.
What share of sales went through distributors this quarter?
Distributors took 48% of revenue last quarter, up from 31% a year earlier. A further rise alongside the working-capital build would mean chips are moving into the channel ahead of end demand.
How large is the biggest customer now?
Management expects a handful of customers to drive most volume over the next six quarters. The top customer's share of revenue, and of receivables, tells how exposed the fourth-quarter plan is to one decision.
Where does the Silicon Motion arbitration stand?
Management had pointed to a resolution in the first half of 2026. That date has passed, the release repeats the damages risk without a status, and the plan carries no reserve.