IN Brief:
- MACOM reported fiscal Q3 revenue of $342.2 million, 35.8% higher year on year.
- GAAP gross margin increased to 58.3%, with operating income reaching 22.5% of revenue.
- Fiscal Q4 revenue is forecast between $415 million and $425 million.
MACOM reported fiscal third-quarter revenue of $342.2 million, 35.8% above the corresponding period last year and 18.4% higher than the previous quarter. The semiconductor manufacturer also widened gross and operating margins before forecasting another substantial revenue increase for its final quarter of the financial year.
GAAP gross margin reached 58.3%, compared with 55.3% a year earlier and 56.9% in the preceding quarter. Operating income increased to $77.1 million, equivalent to 22.5% of revenue, from $37.7 million and 14.9% of revenue in the comparable 2025 period.
MACOM’s product range makes the figures relevant across several distinct areas of electronics. The company designs and manufactures devices for telecommunications, industrial, defence, and data-centre equipment, spanning RF and microwave components alongside lasers, photodetectors, transimpedance amplifiers, optical receivers, signal-conditioning devices, and communications processors.
That breadth also makes the headline growth rate less straightforward than it appears. A company-wide revenue increase cannot be assumed to represent identical demand across compound-semiconductor RF devices, silicon products, photonic components, and communications ICs. Each category operates through different manufacturing processes and customer qualification cycles.
High-frequency RF devices may use gallium arsenide or gallium nitride technologies, while optical products require laser, detector, and packaging processes that have little in common with conventional silicon logic. Increasing production across such a portfolio means balancing wafer supply, specialist fabrication, assembly, packaging, and test rather than simply loading one process technology more heavily.
Recent investment in supply arrangements also reflects that requirement. MACOM has been strengthening access to semiconductor materials and epitaxial services as revenue rises, including agreements associated with compound-semiconductor technologies. Long qualification periods in telecoms, defence, industrial, and optical infrastructure can make rapid supplier substitution difficult once a component has been designed into a system.
Research and development expenditure reached $74.3 million during Q3, compared with $63.4 million a year earlier. Selling, general, and administrative costs also increased, but revenue rose faster, allowing operating margin to improve materially. The result suggests the company is supporting a larger product and technology base without costs increasing at the same rate as sales.
MACOM’s adjusted gross margin was 59.7%, while adjusted operating income reached $107.7 million, or 31.5% of revenue. Those non-GAAP figures exclude items defined by the company, but the direction is consistent with the statutory accounts: both sales and operating profitability increased substantially during the quarter.
The fourth-quarter forecast would extend that pattern. MACOM expects revenue between $415 million and $425 million for the quarter ending 2 October, with adjusted gross margin between 60% and 61%. At the midpoint, quarterly sales would increase by almost $78 million from Q3, requiring a further step-up in manufacturing output and customer deliveries.
Part of the engineering challenge comes from the end markets themselves. Data-centre optical links are moving towards higher bandwidth, defence electronics require long qualification and supply continuity, and communications infrastructure continues to use specialist RF and photonic components whose manufacturing cannot be transferred instantly between processes. An increase in demand can therefore expose bottlenecks in particular technologies even when the wider factory network has nominal spare capacity.
MACOM has now moved from $252.1 million of revenue in the comparable quarter last year to $289 million in fiscal Q2 and $342.2 million in Q3. Its next-quarter forecast points to another sizeable increase. The useful measure from here will be whether fabrication, packaging, and test capacity can sustain that pace across a portfolio whose manufacturing requirements vary considerably from one device family to the next.
