ADTRAN (ADTN) Q3 2026 Earnings Call: Optisches Wachstum, Lieferengpässe und Q4-Prognose

ADTRAN Holdings, Inc. (NASDAQ: ADTN) verzeichnete im dritten Quartal 2026 einen Umsatz von 281,2 Millionen US-Dollar. Dies entspricht einem Anstieg von rund 1 % gegenüber dem Vorjahreszeitraum und einem unveränderten Wert im Vergleich zum Vorquartal. Dem Wachstum im Bereich Optik und der steigenden Nachfrage von Hyperscalern standen Bauteilengpässe, höhere Beschaffungskosten sowie schwächere Umsätze im Segment Subscriber Solutions gegenüber.

Wichtige Erkenntnisse

• Der Umsatz lag im dritten Quartal 2026 bei 281,2 Millionen US-Dollar und damit leicht unter der Mitte der Prognosespanne des Managements. Laut Unternehmensführung verhinderten Lieferengpässe die Auslieferung von zusätzlichen Produkten im Wert von „mehreren Dutzend Millionen US-Dollar“.
• Der Umsatz im Bereich Optical Networking Solutions stieg im Vergleich zum Vorjahr um 11 % und im Vergleich zum Vorquartal um 4 % auf 114,5 Millionen US-Dollar, gestützt durch ein starkes US-Geschäft.
• Die Non-GAAP-Bruttomarge stieg im Vergleich zum Vorquartal auf 42,1 %, was einen positiven Effekt von rund 200 Basispunkten aus Zollerstattungen beinhaltet. Das Management führte 80 % bis 90 % des zugrunde liegenden Margendrucks auf höhere Beschaffungskosten zurück.
• Die Non-GAAP-Operativmarge verbesserte sich von 3,8 % im zweiten Quartal 2026 auf 5,0 %, während der verwässerte Non-GAAP-Gewinn je Aktie von 0,04 US-Dollar auf 0,09 US-Dollar stieg.
• Der Umsatz mit Hyperscalern wuchs im Jahresvergleich um mehr als 200 % und im Vergleich zum Vorquartal um etwa 20 % und erreichte knapp über 10 % des Quartalsumsatzes.
• Für das vierte Quartal 2026 erwartet das Management einen Umsatz von 272 Millionen bis 292 Millionen US-Dollar sowie eine Non-GAAP-Operativmarge von 1 % bis 5 %.

Wichtige Finanzdaten

Geschäfts- und operative Entwicklung

Optical Networking Solutions blieb der wichtigste Wachstumstreiber von ADTRAN. Der Umsatz erreichte 114,5 Millionen US-Dollar, was 41 % des Gesamtumsatzes entspricht. Das Wachstum wurde durch die USA, Kapazitätserweiterungen von Dienstleistern und die steigende Cloud-Nachfrage angetrieben.

Access and Aggregation Solutions erzielte 78,5 Millionen US-Dollar oder 28 % des Umsatzes. Der Umsatz stieg im Jahresvergleich um 5 %, ging jedoch im Vergleich zum Vorquartal um 10 % zurück. Das Management führte einen Teil der Schwäche auf zeitliche Projektverschiebungen bei einem europäischen Großkunden zurück und rechnet ab dem ersten Quartal 2027 mit einer Normalisierung der Aufträge dieses Kunden.

Der Umsatz im Bereich Subscriber Solutions betrug 88,1 Millionen US-Dollar und machte 31 % des Gesamtumsatzes aus. Er sank im Jahresvergleich um 13 %, stieg jedoch im Vergleich zum Vorquartal um 4 %, getrieben vor allem durch Carrier Ethernet.

Der Umsatz mit Hyperscalern wuchs im Vergleich zum Vorjahr um mehr als 200 % und im Vergleich zum Vorquartal um rund 20 %. ADTRAN bedient diesen Markt derzeit hauptsächlich mit Produkten zur Rechenzentrumsvernetzung. Das Management gab zudem an, dass die Nachfrage der Netzbetreiber davon profitiert, dass diese ihre Netze aufrüsten, um den höheren Datenverkehr aus Rechenzentren zu bewältigen.

Das Produkt Lightwave 800 liegt für Kunden-Testläufe im ersten Halbjahr 2027 weiterhin im Zeitplan, wobei der Hochlauf der Serienproduktion für die zweite Jahreshälfte erwartet wird. Das Management gab jedoch zu bedenken, dass eine nennenswerte Lieferverfügbarkeit eher gegen Ende 2027 wahrscheinlich ist. MicroMux Quattro soll in der ersten Hälfte des Jahres 2027 auf den Markt kommen, wobei sich erste Geräte bereits in der Erprobung befinden.

Der Umsatz im Firmenkundensegment wuchs im Jahresvergleich weiterhin im zweistelligen Prozentbereich. Das Management verwies auf die Nachfrage nach schnelleren, ausfallsicheren und quantensicheren Netzwerklösungen bei Unternehmenskunden und Betreibern kritischer Infrastrukturen.

In Europa sieht ADTRAN den Austausch von Hochrisiko-Lieferanten als mehrjährige Chance. Das Management zitierte eine unabhängige Studie, wonach die betreffenden Hochrisiko-Anbieter im Jahr 2025 schätzungsweise rund 850 Millionen US-Dollar Jahresumsatz erzielten, und erklärte, dass bei einer Genehmigung des vorgeschlagenen EU-Rahmenwerks letztlich installierte Geräte im Wert von etwa 10 Milliarden US-Dollar ersetzt werden müssten.

Prognose des Managements

Für das vierte Quartal 2026 erwartet ADTRAN:

• Einen Umsatz von 272 Millionen bis 292 Millionen US-Dollar.
• Eine Non-GAAP-Operativmarge von 1 % bis 5 %.

Der Ausblick spiegelt die historische Saisonalität, die Lieferverfügbarkeit und den Zeitplan großer Kundenprojekte wider. Das Management rechnet im vierten Quartal mit höheren Zahlungseingängen und einer Normalisierung des Working Capitals.

Mit Blick auf das Jahr 2027 geht das Management davon aus, dass das BEAD-Programm einen größeren Beitrag als 2026 leisten wird, und bezeichnete es als mehrjährige Initiative. Das Unternehmen erwartet zudem in der ersten Jahreshälfte eine lebhaftere Geschäftsentwicklung im Bereich Access and Aggregation, sobald ein wichtiger Kunde seine Einkäufe wieder aufnimmt. Diese Aussagen sind als Orientierungshilfe und nicht als formelle Ganzjahresprognose zu verstehen.

ADTRAN strebt weiterhin langfristig eine Non-GAAP-Operativmarge von 10 % an. Zu den geplanten Stellschrauben gehören Preiserhöhungen, Neugestaltungen von Produkten, ein günstigerer Produktmix und Disziplin bei den Betriebsausgaben. Eine jüngste Preiserhöhung deckt etwa 70 % der Kunden ab, während die verbleibenden Erhöhungen voraussichtlich Anfang 2027 in Kraft treten werden.

Risiken und Beobachtungspunkte

Die Verfügbarkeit von Bauteilen bleibt kurzfristig die wesentliche Einschränkung. Das Management nannte unter anderem optische Laser, Pumplaser, Halbleiter und Speicherbausteine als betroffene Komponenten, während sich auch die Lieferzeiten für Leiterplatten zu verlängern begonnen haben.

Höhere Bauteilkosten belasten weiterhin die Bruttomarge. Ohne den positiven Effekt der Zollerstattungen blieb die zugrundeliegende Profitabilität durch beschaffungsbedingte Inflation und den Produktmix beeinträchtigt. Laut Management hängt eine künftige Margenverbesserung teilweise von Bauteilkosten ab, auf die das Unternehmen keinen Einfluss hat.

Das Working Capital stieg aufgrund höherer Forderungen aus Lieferungen und Leistungen sowie höherer Vorräte. Die Außenstandsdauer der Forderungen stieg auf 77 Tage, während der negative freie Cashflow 39,4 Millionen US-Dollar erreichte.

Der Zeitplan großer Kundenprojekte bleibt ungewiss. Bei einem großen europäischen Kunden wird ab dem ersten Quartal 2027 wieder mit einem normalen Bestellverhalten gerechnet, allerdings haben Projektverschiebungen den Umsatz im Segment Access and Aggregation bereits beeinträchtigt.

Die europäische Gesetzgebung zum Austausch von Hochrisiko-Lieferanten könnte ein wichtiger Katalysator sein. Das Management betonte jedoch, dass der Zeitplan ungewiss bleibt, da die Genehmigung einen EU-Prozess unter Beteiligung mehrerer Länder erfordert. Die in der Telefonkonferenz erörterte aktuelle Erwartung geht von einem möglichen Abschluss in der ersten Hälfte des Jahres 2027 aus.

Wichtigste Punkte aus der Fragerunde für Analysten

Nach Schätzungen des Managements verhinderten Engpässe in der Lieferkette im dritten Quartal die Auslieferung von Produkten im Wert von mehreren Dutzend Millionen US-Dollar. Das Unternehmen rechnet damit, dass Lieferengpässe auch im Jahr 2027 der größte potenzielle Gegenwind bleiben werden, und platziert Kaufaufträge früher im Voraus, während es sich Kapazitätszusagen für neue Produkte sichert.

Bezüglich der Bruttomarge erklärte das Management, dass 80 % bis 90 % des derzeitigen Drucks auf Beschaffungskosten und nicht auf den Geschäftsmix zurückzuführen sind. Neugestaltungen von Produkten im Bereich Optik und Netzabschlussgeräte (Customer-Premises Equipment) sollen ab Anfang 2027 zusammen mit breiter angelegten Preisanpassungen positive Beiträge liefern.

Laut Management sind die Ausschreibungen in Europa weiterhin aktiv, darunter ein kürzlich eingereichtes Angebot für einen vollständigen Netzaustausch über einen Zeitraum von vier Jahren. Nach dem vorgeschlagenen EU-Cybersicherheitsrahmenwerk würden Betreiber den Kauf von als Hochrisiko eingestuften Geräten in der Regel sofort einstellen und installierte Geräte im Laufe der Zeit ersetzen, wobei eine vollständige Entfernung derzeit für etwa 2035 vorgesehen ist.

Bei den Rechenzentrumsprodukten berichtete das Management von einem starken Interesse großer Rechenzentrumsbetreiber an Lightwave 800. Das Interesse an MicroMux Quattro sei breiter gefächert und umfasse Netzbetreiber, Hyperscaler, Neocloud-Anbieter und Großhandelskunden im Netzwerkbereich.

Vollständiges Transkript der Telefonkonferenz

Vollständiges Transkript der Telefonkonferenz

Ausführungen des Managements

Operator

Ladies and gentlemen, thank you for standing by, and welcome to the ADTRAN Holdings, Inc. Third Quarter 2026 Earnings Release Conference Call. [Operator Instructions]

During the course of the conference call, ADTRAN representatives expect to make forward-looking statements that reflect management's best judgment based on factors currently known. However, these statements involve risks and uncertainties, including the successful development and market acceptance of our products; the ability of our third-party suppliers to supply components and products, our ability to convert our backlog into revenue, our ability to maintain current expected delivery schedules, competitive pricing and acceptance of our products intellectual property matters, the effect of economic conditions, the impact of tariffs and trade policy and other risk factors described in our most recent annual report on Form 10-K and in our quarterly filings with the Securities and Exchange Commission.

ADTRAN Holdings assumes no obligation to update any such forward-looking statements. During today's call, management will refer to certain non-GAAP financial measures. Reconciliations of GAAP to non-GAAP measures and certain additional information are also included in our investor presentation and our earnings release. ADTRAN Holdings has not provided reconciliations of its second quarter 2026 outlook with regard to non-GAAP operating margins because it cannot predict and quantify without unreasonable effort all the adjustments that may occur during the period. The investor presentation has been updated and is available for download on the ADTRAN Investor Relations website.

Hosting today's call is Tom Stanton, ADTRAN Holdings' Chief Executive Officer and Chairman of the Board; and Timothy Santo, Senior Vice President and Chief Financial Officer. It is now my pleasure to turn the call over to Tom Stanton, Chief Executive Officer of ADTRAN Holdings. Sir, please go ahead.

Thomas Stanton

Thank you, Kara. Good morning, everyone. ADTRAN delivered third quarter results slightly below the midpoint of our guidance range while navigating a challenging supply environment. Importantly, the underlying trends of our business remain encouraging. We continue to see strength in optical, growing momentum with hyperscalers and progress in Europe. Together, these growth drivers are expanding our reach across service provider, cloud providers and enterprise markets, helping us build a broader and more diversified customer base. Optical remained a primary growth engine with revenue increasing 11% year-over-year and 4% sequentially, supported by particularly strong performance in the U.S. These results are consistent with our expectations entering the year for growth to build throughout 2026.

In Access & Aggregation, revenue grew 5% year-over-year, led by strength in Europe despite a slowdown with one of our largest customers due to adjustments in timing of ongoing projects as we have previously discussed. We are pleased with where we are with that customer and still expect orders to return to normalized levels in Q1 of next year. In Subscriber Solutions, revenue increased 4% sequentially, led by carrier Ethernet. Demand remains strong as operators continue to expand fiber connectivity to homes, businesses and critical infrastructure sites and as expectations for speed and reliability keep rising. Taken together, these results reflect a demand environment that remains solid across our core markets, even as supply availability continues to influence timing.

At the same time, AI is reshaping network requirements, driving the need for faster, more secure and more reliable connectivity. Our strategy remains focused on 3 key areas: helping service providers build high-speed fiber networks with AI-driven automation, growing our business with cloud providers as they build out AI infrastructure and expanding our position in enterprise and critical infrastructure. Each represents an important growth opportunity for ADTRAN. I'll start with service providers.

AI is driving growing bandwidth demand as operators connect cloud and AI infrastructure and carry increasing network traffic, leading them to expand network capacity and translating into stronger demand for our optical solutions. That AI build-out is led by hyperscalers, and it's easy to understand why some are increasingly their focus and resources there. We are participating in that growth as well, and as you'll hear in a moment, but hyperscaler networks don't exist in isolation. The growth in and between data centers ultimately extends into the carrier networks that connect them to enterprises, homes and each other. And that growth can't reach its full potential unless those networks are upgraded to carry it. So while we are growing with cloud providers, we are deliberately staying focused on the service providers that connect them, where our deep customer relationships and differentiated technology give us a strong position. And as some competitors turn their attention elsewhere, we intend to capture the opportunity that they create.

Higher bandwidth alone, however, is not enough. Networks also need to be secure, resilient and trusted. This is continuing to increase pressure on high-risk vendor replacement, which remains a key growth driver for the company. Although operators across Europe are already moving away from high-risk vendors, particularly in new deployments, the proposed EU Cybersecurity Act 2, which would establish a stronger framework for securing Europe's technology supply chains and would accelerate the replacement of high-risk equipment already in networks. Our success in Europe demonstrates the strength of our position, and we believe we can benefit as these replacement programs expand.

We are also seeing continued investment in access network upgrades to support multi-gigabit services as connected homes require greater speed, reliability and security. As AI applications move into homes and businesses, the access network increasingly determines the user's experience. Across the U.S. and Europe, demand for higher-speed broadband continues to drive investment in higher capacity access networks and CPE, supported in part by broadband programs such as BEAD. AI is also reshaping how these networks are operated. We introduced AI-driven automation with Mosaic One Clarity and have since augmented those capabilities with Mosaic One Fabric and an expanded suite of Mosaic One agents.

These agents are designed to automate routine traffic management tasks and proactively identify and resolve issues. Fabric also gives operators the unique ability to build and deploy their own agents, providing greater autonomy and helping them automate across complex multi-vendor network environments. The response from operators of all sizes has been extremely positive, and we believe Mosaic One Fabric positions operators to lead this transition.

Turning to our second growth area, cloud and AI infrastructure. Here, our opportunity goes beyond connecting AI infrastructure with carriers. We are positioning ADTRAN to participate directly in its build-out with solutions at 3 critical points in the cloud network architecture. Data center interconnect is where we have long served cloud providers, and we are starting to see the benefits of our investments in this area. Revenue from hyperscaler customers grew more than 200% year-over-year. Inside the data center, AI is creating unprecedented bandwidth demand as increasingly large custom clusters of GPUs must be connected to support AI workloads. Building on our innovation in low-power, high-performance optics, we are extending our technology to address this growing opportunity.

Our Lightwave 800 development remains on track with customer trials expected to begin in the first half of next year and production scaling in the second. Customer engagement remains very positive. At the cloud handoff, where cloud providers connect to service providers or other cloud providers, our MicroMux Quattro solution is scheduled for release in the first half of 2027. It is generating significant interest from hyperscalers, content providers and wholesale network providers.

Moving to enterprise and critical infrastructure. This remains a higher growth area for us. Enterprise continues to deliver double-digit year-over-year growth, and we see good momentum as customers invest in higher-speed networks with a growing focus on security and resiliency. We believe we have one of the most competitive portfolios in the market with advanced quantum-safe networking capabilities embedded into our optical and Ethernet solutions. We see this level of security increasingly becoming a fundamental requirement for networks supporting the AI-driven economy.

Shifting to product cost and pricing. We continue to operate in a dynamic environment. Reported gross margins benefited from IEPA tariff refunds this quarter. On a more normalized basis, higher component costs, combined with product and customer mix continued to pressure margins. We continue to work actively with suppliers, implement product redesigns and pursue pricing adjustments to help offset these pressures. Looking ahead, we continue to see strength in optical across both service provider and cloud markets, solid growth in enterprise and additional opportunities in broadband as high-risk vendor replacement programs gain momentum. We remain focused on addressing gross margin pressures, maintaining disciplined expense management and achieving our long-term target of 10% non-GAAP operating margin.

To close, this was a quarter of continued progress across several of our strategic objectives. Our priorities are unchanged, maintaining tight expense control, generating cash and converting our strong pipeline into revenue. With that, I'll turn the call over to Tim to review our financial results in greater detail. Tim?

Timothy Santo

Thank you, Tom, and thank you for all joining us today. Revenue for the quarter was $281.2 million, up approximately 1% from the prior year and in line with the prior quarter. Geographically, U.S. revenue was $128 million, representing approximately 46% of total revenue, up 6% year-over-year. Non-U.S. revenue was $153.2 million, representing approximately 54% of total revenue and down 4% year-over-year. By product category, Optical Networking Solutions revenue was $114.5 million or 41% of total revenue, increasing 11% year-over-year and 4% sequentially. Access and Aggregation Solutions revenue was $78.5 million or approximately 28% of total revenue, up 5% year-over-year, but down 10% sequentially. Subscriber Solutions revenue was $88.1 million or 31% of total revenue, down 13% year-over-year and up 4% sequentially.

Turning to margins. Non-GAAP gross margin was 42.1%, a sequential increase from 40.7% in the second quarter of 2026. Gross margin benefited approximately 200 basis points from IEFA tariff refunds received during the quarter. Non-GAAP operating expenses were $104.2 million compared to $103.9 million in the second quarter of 2026 and $102.4 million in the third quarter of 2025. We continue to take proactive measures to maintain cost discipline and offset inflationary pressures. Non-GAAP operating income was $14.1 million, resulting in a non-GAAP operating margin of 5%. This is compared to $15.1 million and 5.4% on a year-over-year basis and $10.6 million and 3.8% on a sequential basis.

Non-GAAP tax expense during the quarter was $3.8 million, reflecting an effective non-GAAP tax rate of 31.4%. Non-GAAP net income attributable to ADTRAN Holdings was $7.1 million or $0.09 per diluted share compared to $0.05 in the third quarter of 2025 and $0.04 in the prior quarter. Turning now to the balance sheet and cash flow. Working capital increased during the quarter, resulting from higher accounts receivable and inventory, partially offset by increased accounts payable. DSO increased to 77 days, reflecting higher billings and the timing of collections. Inventory increased to $227.4 million and accounts payable increased to $179 million, reflecting purchasing activity in the current supply environment. Operating cash flow was negative $24.5 million during the quarter, resulting from negative free cash flow of $39.4 million.

During the quarter, we repurchased approximately $18 million of ADTRAN Networks SE shares, further reducing the minority ownership and increasing ADTRAN Holdings ownership to 73.4%. We ended the quarter with $71.7 million of cash, cash equivalents and restricted cash compared to $79.2 million at June 30, 2026. We expect collections to increase and working capital levels to return to a more normalized level in the fourth quarter.

Turning to the fourth quarter outlook. We expect revenue to be between $272 million and $292 million and non-GAAP operating margin to be between 1% and 5%, overcoming historical seasonality, availability of supply and timing of large customer projects. I'd like to note that we'll be participating in the Craig-Hallum Alpha Select Conference in New York on November 17 and plan to attend the 29th Annual Needham Growth Conference in January. We hope to see many of you there. And with that, I will turn the call back to Tom.

Thomas Stanton

All right. Thanks very much, Tim. Kara, I'd like to go ahead and open up to any questions people may have. .

Operator

[Operator Instructions] Your first question comes from the line of Irvin Liu from Evercore ISI.

Fragen und Antworten

Jyhhaw Liu

I have one and a follow-up. First, Tom, are you able to quantify the revenue impact, if any, related to the current supply environment for Q3? Just in other words, has the availability of supply impacted your ability to ship product? Or has supply been mostly a cost headwind so far?

Thomas Stanton

No, it definitely impacted our ability to ship product. It did -- last couple of quarters, it has, and we continue to see it be something that we're having to manage around. But I would say there was tens of millions of dollars we could have shipped if we had more supply.

Jyhhaw Liu

And then for my follow-up, I understand you typically guide one quarter at a time. But to the extent that you can, are you able to provide any sort of preliminary thoughts into 2027? Should we still expect high-risk vendor replacement to be a tailwind? And does the BEAD program become more meaningful? And just how are you thinking about supply and perhaps contribution from the Lightwave 800 or MicroMux Quattro?

Thomas Stanton

Sure. That's a bunch of questions. So let me start with just kind of BEAD will be stronger next year than this year. That's -- we're just kind of getting started, and we expect that to be kind of a multiyear program. The vendor replacement in Europe is just an ongoing continual thing. I think there's a general belief -- and when I say that, that's not just ADTRAN speaking, there's a general belief that activity around vendor replacement will pick up. And that's because of the legislation, CSA2 that's being right now negotiated in Europe, and we -- current thoughts are that, that will be finalized probably early next year. That itself kind of puts some specific laws in place that continue to drive positive pressure towards getting that vendor replacement done.

As far as lightweight, I mentioned it in my comments, we expect to be able to ship it. It will be towards the tail end of next year where we expect really meaningful supply availability, and we will be trialing that in the first half. Quattro is about 6 months ahead of that, so we should be in production right around the turn of the year. So those should be positive -- they will be because they're all incremental positive contributors to us. I see right now the environment we're in which is very much a supply-constrained environment continuing on. So I think our biggest hurdles for next year, our biggest headwind for next year is just going to be continuing to get enough supply.

Operator

Your next call comes from the line of Ryan Koontz with Needham.

Unknown Analyst

This is Jeff Hopson on for Ryan. Just trying to understand, is there any specific component that's hard to get a hold of? And has that been changing over the past couple of quarters? Or it's the same of component?

Thomas Stanton

I'd say generally the same ones that were very problematic coming into the year or last quarter continue to be problematic, and that's typically optics lasers, pump lasers, just many pieces of our optics solution. There are some semiconductor shortages or tightness. And of course, we're seeing price inflation in semiconductor as well. Memory continues to be a problem. I had mentioned, I believe, on the last call that although that's been problematic, at least it seems stable and that you can get supply. And I would still say that, that's true. I would say the only change from, let's say, now versus 6 months ago is those components are difficult. But at the same time, you're seeing a new base of components that are just lead times are extending. PC boards is a good example of that, where we've traditionally never seen PC boards even in the downturn, the supply crisis, we didn't see this kind of tightness in PC boards. So us being able to forecast better and continue to reach out with POs farther into the cycle is becoming more important.

Unknown Analyst

And maybe just on the -- in Europe, any update on just general RFP activity that you expect to translate to ADTRAN revenue over the next 6 to 12 months?

Thomas Stanton

Yes. We've got ongoing. In fact, we just had one submitted yesterday a fairly good size. So yes, I mean, this each -- there are multiple components that have to be replaced or that have to be first resourced and then replaced. And there are actually, if I think about just the one yesterday, that was a full out replacement over 4 years. So that activity is just ongoing.

Operator

Your next question comes from the line of Michael Genovese with Rosenblatt Securities.

Amoljit Dhaliwal

This is Amoljit Dhaliwal on for Mike Genovese. So touching on what you said earlier, excluding the 200 basis point benefit from refunds, the gross margin was roughly about 40%. I was wondering if you could double-click on that number and share how much of the pressure was component cost versus change in product mix? And once the supply conditions begin to normalize, how much of the pressure is temporary headwinds versus structural or mix based?

Thomas Stanton

Yes, good question. I think without a doubt, the overarching thing is supply cost and increases in our supply cost. We did get hurt some by mix. As some of you know, we've gotten some of our European businesses doesn't kick back on into Q1. There's a particular mix associated with that. But I'm going to tell you, just generally speaking, I mean, it's 80%, 90% supply cost. We wouldn't be having this discussion if we didn't have the acceleration in supply cost.

Operator

Your next question comes from the line of Christian Schwab with Craig-Hallum.

Christian Schwab

Tom, I just would like an explanation of the -- with some of clarity, if you can provide it on attaining eventually your 10% non-GAAP operating margin target. It sounds like maybe that's passing on supply cost or mix or -- et cetera. I'm just wondering if you can elaborate on we haven't operated at that in quite some time. Just the steps that we can take that are under your control to get there, I guess, is what I'm asking.

Thomas Stanton

Yes, good. A fair question. So I -- the thing that's hurting us now that's kind of out of what our plan was is the impact on gross margins. We are stepping through price increases, and we have new redesigns that are coming online. In fact, we have some of them that will be coming online early next year, both in the optics space and in the CPE space. Those will help. The question is what does the supply chain do between now and then? And are we able to continue to actually make up ground or just continue in the position that we're in today. We are also passing on price increases. We have a price increase that has been put in effect just a recent increase that covers about 70% of our customers. And the rest of them will be coming online in early next year.

So we're continuing to make those movements. And the real answer to your question is it's very difficult to forecast that gross margin. We do think mix shift will be better next year. We think that our optical sales and access will benefit from increased sales next year, which is typically positive to gross margins. But yes, that's really the question. I mean our levers are 2. We have operating expense to the extent that we control that and then we have gross margins. And gross margins, we continue to do the pieces we can do on our side, but there's a piece that is out of our control, which is the supply chain cost itself or the component cost itself. I'm not really ready to forecast next year, but we have 2 pieces that are within our control.

Operator

Your next question comes from the line of Dave Kang with B. Riley.

Dave Kang

First question is on the hyperscaler segment. It was up 20% year-over-year. Just wondering how it performed sequentially? And what is that in terms of percentage of revenue?

Thomas Stanton

I don't think we actually break that out as a percentage of revenue. I think last quarter, Tim, can you help me here last quarter it was up. I think it was up about 100% year-over-year last quarter. You keep growing 100% and 200%, it's going to be meaningful no matter what. Yes, we can take that offline then Tim will answer it.

Dave Kang

Just on the MicroMux and LPO activities, just wondering how those trials are progressing? And have you added any new customers trialing your products, data center products?

Thomas Stanton

Yes. We have some OEMs as well as some hyperscalers themselves. Some of them have pushed OEMs to come our way for both of those products. The Quattro right now, we have some units that are kind of very early units that are out in testing and the lightweight not yet. So I would expect that though early in Q1.

Timothy Santo

Hyperscaler quarter-over-quarter was about 20%.

Dave Kang

Up 20%. Got it. So it's -- I think last quarter, you said it was about 10% of revenue. So it should be a little bit higher than 10% for third quarter. It sounds like.

Timothy Santo

That's right. Yes.

Dave Kang

And my last question is on the Access segment. Just can you talk about seasonality? I mean, should we -- for next year, should we expect a typical first half stronger than second half? Is that how we should think about seasonality?

Thomas Stanton

Yes, I'm going to have to take a little bit out of our norm. So first of all, seasonality in the fourth quarter is access is typically down, then it typically comes back up in first quarter. It is -- there is -- we have a couple of customers that drive that number pretty significantly. Being as one of those customers is really not buying a lot in access and ag through the end of this year, we would expect the first half of next year to be fairly strong. It's too early for me to talk about the second half of next year.

Operator

Your next question comes from the line of George Notter with Wolfe Research.

George Notter

I just have one question about securing supply. So it sounded like on the lightly product, you'd start to ramp really second half next year. Are you securing supply for that today? Because I know some lead times on some products or components can be a year plus. I was just wondering how you're navigating the environment from that perspective.

Thomas Stanton

Yes. We're securing supply commitments. So we're trying to secure capacity. But -- and to be very honest here, it's the tail end of next year. So it's not -- don't expect a whole lot of shipments in Q3 for Lightwave, but we are securing commitments for capacity.

Operator

Your next question comes from the line of Bill Dezellem with Tieton Capital Management.

William Dezellem

Let me start if I may with the high-risk vendor. Would you please discuss in more detail the legislation that's taking place in Europe and the timing of that legislation coming to fruition and the implications of it, not only in terms of the replacement that would need to be done, but the time frame at which it would need to be accomplished by?

Thomas Stanton

Yes. So the legislation does a few things. First of all, it's been in the works now for well over a year. So hopefully, we're coming to the end of the process. There is some proposed language that you can find. I think if you do a search on the Internet right now, you can see some of the proposed language that's currently contemplated. There are a few things that are still yet undetermined that aren't agreed upon. But in general, the concept is you stop buying and then you have a period of time by which you have to remove and replace all of the offending vendor equipment in your network. The legislation itself and getting that put into law, I think, of course, is a positive catalyst just for ongoing business. The dates associated with full replacement, like I said, aren't decided yet. But right now, I think it's generally contemplated to be around 2035 to actually have all the equipment ripped out. But no new equipment, it would be effectively right away.

William Dezellem

And given the pace of legislation can move, even though it's a year into the process, is the implication that there may be another year or more? Or do you see momentum behind this? And apologies if I haven't close of attention to just how this is picking up or not.

Thomas Stanton

Yes. No problem. I would tell you all of our investors that this is important legislation for ADTRAN. I mean we are the biggest beneficiary of this legislation being approved. You're right about the -- it being a -- it is an EU rule, right? So it's not just one country. So there are multiple countries that have a vote. The current thought is, and I would say that that's kind of the way that the participants are viewing it is that it will be done early next year. But having said that, this is multi-government legislation. So it's not -- it's something you wouldn't want to bet on. That's kind of -- but that is literally the current time frame is actually first half of next year.

William Dezellem

And taking this one step further, the stop buying the high-risk vendors, how much revenue do the high-risk vendors currently earn each year? And really the spirit of that question is trying to understand the magnitude that we're talking about here at this point in, I guess, in 2026 and '27.

Thomas Stanton

Yes. So we actually commissioned an independent study to actually look at that. And I think it was -- yes, in 2025, that number was somewhere in the mid-$800 million directly related to our equipment on an annual basis. And I don't think that, that's -- I would still have to think we're in the same ballpark at this point. And the bigger piece, of course, is if they do get this legislation or when they do get this legislation approved, there's a solid $10 billion worth of equipment that's got to be replaced.

William Dezellem

And then given that we're only 35 minutes into the call, I am going to ask you to dive into more detail, if you would, on the data center activity in terms of what you all are doing today and then the magnitude of the opportunity that your new products could lead to if they are as successful as you think they will be?

Thomas Stanton

Yes. So what we're doing today is mainly data center interconnect, right? So it's actually connecting data centers to data centers. So I guess that would be interconnect. And that's using our ongoing optical products. I will say that it's being -- it's also impacting our carrier sales. So we're seeing some really good activity here in the U.S. and in some portions of Europe, where you have carriers that are really trying to make sure that they upgrade their network to be able to meet data center traffic requirements and one of them here in the U.S. is very vocal. And our business is definitely picking up because of that. But we also are in data center upgrades where the hyperscalers themselves are upgrading, and we have one customer that, of course, is materially larger than the rest.

That's ongoing. We expect that actually -- that business to continue to grow meaningfully. The new intersection point for us is these 2 chips. The LPO is huge. We have strong interest in that product. And I'm trying not to overhang myself here, but we have strong interest in that product. And that product is not singular. We have different versions of that product that will be coming out over the next probably 3 years or so. But we've got very good interest on our very first. So it's anything that has to do with hyperscalers typically -- it's typically tens to hundred millions of dollars. So it's -- it would be very beneficial for the company when we're successful there.

William Dezellem

And one additional question, and I do promise I'll step away. The interest that you said is very strong. Is that coming from 1 or 2 potential customers? Or is it much more broad-based than that?

Thomas Stanton

On the lightweight, it is really large data center owners. So there's a finite number of them. On the Quattro, it is pretty much across the board. It's carriers, it is hyperscalers, it's neoscalers, it's MOPHY-type customers. So it's across the board. It's a much broader product. It's a much broader customer set.

Operator

I think we are -- I see the question queue is empty at this point. So thank you very much for everybody joining us, and we look forward to talking to you next quarter.