--- title: "One day settles the AI-optics fight: Lumentum's sold-out lasers meet MACOM's sinking tape" description: "Lumentum says its AI lasers are sold out through early 2029 and revenue has doubled; MACOM just fell 9.91 percent as Meta's negative free cash flow and CoreWeave's debt bill raise the question of who pays for the buildout. Both report on November 5." publisher: "The Inference" section: "Chips" published: 2026-10-26T13:18:56.259Z modified: 2026-10-26T13:18:56.259Z canonical: https://theinference.org/article/one-day-settles-the-ai-optics-fight-lumentum-s-sold-out-lasers-meet-macom-s-sinking-tape language: en keywords: "AI Optics, Lumentum, MACOM, Data Center, Earnings Preview" --- # One day settles the AI-optics fight: Lumentum's sold-out lasers meet MACOM's sinking tape > Lumentum says its AI lasers are sold out through early 2029 and revenue has doubled; MACOM just fell 9.91 percent as Meta's negative free cash flow and CoreWeave's debt bill raise the question of who pays for the buildout. Both report on November 5. [Lumentum](https://theinference.org/markets/companies/lumentum)'s lasers are gone. CEO Michael Hurlston [told Bloomberg Television](https://www.ad-hoc-news.de/boerse/news/corporate-news/lumentum-highlights-optical-demand-through-2029-lumentum-stock-gains-2-85-percent/70398020) the company's AI optical components are [completely sold out through early 2029](https://theinference.org/article/lumentum-says-ai-laser-demand-is-sold-out-into-early-2029-sivers-30-million-plant-lands-in-2027), and that it cannot meet roughly 70 percent of demand for some products through 2027 [1]. The market believed him enough to bid the stock up 2.85 percent on October 23, within a 52-week range of $157.40 to $1,143.00 and a $68.2 billion market cap [1]. MACOM, down the same trade, is not so lucky this month: it fell 9.91 percent last week to $236.24 [2]. ## Two camps, one morning On November 5 both names report: Lumentum after the market likely tests its guidance, [MACOM](https://theinference.org/markets/companies/macom-technology-solutions) fiscal Q4 before the open with consensus at $1.5828 EPS on $420 million of revenue [1][2]. Lumentum's fiscal Q4 revenue hit $1.01 billion, up 109.3 percent, and it guided fiscal Q1 to $1.225–1.275 billion at 39.5–40.5 percent non-GAAP operating margin [1]. Bernstein previewed [Coherent](https://theinference.org/markets/companies/coherent) and Lumentum earnings landing this same earnings window, [its note dated October 20](https://www.investing.com/news/stock-market-news/coherent-stock-and-lumentum-shares-set-to-report-earnings-next-week-bernstein-previews-93CH-4959547) [4]. *Chart: **Lumentum's revenue has tripled in two years, and its guide points higher still** Line chart of Lumentum quarterly revenue from the quarter ended September 2023 to the quarter ended June 2026, climbing from $0.32 billion to $1.01 billion, with a final guidance point at $1.25 billion.* *Quarterly revenue in US dollars by calendar quarter. The final point is the midpoint of fiscal Q1 guidance of $1.225 to $1.275 billion, drawn as a range. Sources: Lumentum SEC filings [6]; Ad-hoc-news.de [1]. [1][6]* ## What the bears are pricing The drop came without company-specific news at MACOM: chip stocks logged their longest losing streak since 2006 [3]. [Meta](https://theinference.org/markets/companies/meta) narrowed 2026 capex to $135–145 billion and [reported negative free cash flow](https://kalkine.com/news/technology/why-macom-technology-solutions-nasdaqmtsi-plunged-on-the-sp-midcap-400-as-chip-selloff-spread), its first cash outflow in more than a decade [3]. [Lam Research](https://theinference.org/markets/companies/lam-research) guided $8.6 billion plus or minus $400 million and warned parts shortages will curb output into 2027 [3]. [CoreWeave](https://theinference.org/markets/companies/coreweave), [a neocloud dependent on financed demand](https://theinference.org/article/coherent-fell-28-on-coreweave-s-debt-scare-not-its-order-book-ai-lasers-sold-out-through-2027), carries $35.6 billion of debt with [its 2031 bond implying a low-teens yield](https://seekingalpha.com/article/4951310-coreweave-the-bond-market-remains-cautious) and net leverage near 6.8x [5]. Musk, after [SpaceX](https://theinference.org/markets/companies/spacex) closed $40 billion in GPU financing, warned of neocloud collapse [5]. ## Analysts see 65 percent upside; the tape disagrees Analysts still rate MACOM a buy, 10 of 16, with [a $390.33 consensus target](https://longbridge.com/en/news/302953268) about 65 percent above spot [2]. If clouds financing the optics buildout stumble, sold-out books can turn into excess supply. November 5 tells which camp owns the tape [1][2]. ## Takeaway Lumentum cannot make AI lasers fast enough while MACOM sinks with the chip tape; the November 5 reports decide whether sold-out supply or financed demand owns the trade. ## Sources 1. [Ad-hoc-news.de, Lumentum highlights optical demand through 2029, 23 October 2026](https://www.ad-hoc-news.de/boerse/news/corporate-news/lumentum-highlights-optical-demand-through-2029-lumentum-stock-gains-2-85-percent/70398020) 2. [Longbridge (LongbridgeAI), Weekly Recap: Macom Tech -9.91%, most brokers rate it buy, 26 October 2026](https://longbridge.com/en/news/302953268) 3. [Kalkine, Why MACOM Technology Solutions Plunged on the S&P MidCap 400 as Chip Selloff Spread, 23 October 2026](https://kalkine.com/news/technology/why-macom-technology-solutions-nasdaqmtsi-plunged-on-the-sp-midcap-400-as-chip-selloff-spread) 4. [Investing.com, Coherent stock and Lumentum shares set to report earnings next week, Bernstein previews, 20 October 2026 (paywalled)](https://www.investing.com/news/stock-market-news/coherent-stock-and-lumentum-shares-set-to-report-earnings-next-week-bernstein-previews-93CH-4959547) 5. [Seeking Alpha, CoreWeave: The Bond Market Remains Cautious, 1 October 2026 (partial)](https://seekingalpha.com/article/4951310-coreweave-the-bond-market-remains-cautious) 6. [Lumentum, quarterly figures from its SEC filings, retrieved 26 October 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001633978) --- One day settles the AI-optics fight: Lumentum's sold-out lasers meet MACOM's sinking tape — The Inference. Canonical: https://theinference.org/article/one-day-settles-the-ai-optics-fight-lumentum-s-sold-out-lasers-meet-macom-s-sinking-tape