Lumentum Holdings — 2026Q3 earnings
reported 2026-08-11
EPS $3.23 vs $2.97 est — beat
next session +13.6% (close 2026-08-11 → 2026-08-12)
Source
Press release ↗Summary
Lumentum's fiscal Q4 2026 (reported 2026-08-11) is an AI-interconnect volume story with an accounting headline attached. Revenue reached $1.01 billion and non-GAAP gross margin crossed 50% — a threshold management had expected only at a $2 billion quarterly run rate — while the GAAP line shows a $7.2 billion net loss that is entirely the non-cash consequence of equitizing convertible notes, not an operating result. The binding issue for the next several quarters is supply, not demand: management said it is shipping behind demand on EMLs, is effectively sold out of pump lasers, and is 'way behind' on high-powered lasers for co-packaged and near-packaged optics.
Earnings call
Earnings call webcast ↗Review
From the report
Revenue of $1.01 billion came with non-GAAP gross margin of 50.4% and non-GAAP EPS of $3.23; the $7.2 billion GAAP net loss is a one-time, non-cash debt-extinguishment charge from equitizing convertible notes, and the Q1 FY2027 guide steps revenue up again to $1.225-$1.275 billion.
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The quarter's profitability came in at 47.4% GAAP and 50.4% non-GAAP gross margin, with non-GAAP operating margin of 36.6%. show quote
“GAAP gross margin of 47.4%; Non-GAAP gross margin of 50.4% • GAAP operating margin of 27.8%; Non-GAAP operating margin of 36.6%”
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Non-GAAP net income was $326.3 million, or $3.23 per diluted share — the figure the deterministic consensus comparison scored as the beat. show quote
“Non-GAAP net income for the fourth quarter of fiscal year 2026 was $326.3 million, or $3.23 per diluted share”
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The headline GAAP result is a $7.2 billion net loss on $1.01 billion of revenue — a distortion, not an operating outcome, and one that makes GAAP EPS unusable for this quarter. show quote
“Net revenue for the fourth quarter of fiscal year 2026 was $1.01 billion, with GAAP net loss of $7.2 billion, or $84.65 per diluted share.”
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The company attributes that GAAP loss entirely to a one-time, non-cash loss on debt extinguishment of $7.8 billion from equitizing convertible notes. show quote
“The GAAP net loss was driven by the equitization of certain amounts of our convertible notes in the fourth quarter of fiscal year 2026, which contributed to a one-time, non-cash loss on debt extinguishment of $7.8 billion.”
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Guidance steps revenue, operating margin and EPS all higher again for the September quarter. show quote
“Forecasting first quarter of fiscal year 2027 revenue of $1.225 billion to $1.275 billion; Non-GAAP operating margin of 39.5% to 40.5%; and Non-GAAP diluted net income per share of $4.05 to $4.35”
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The CEO frames the demand as an architectural shift inside the data centre rather than a cyclical upturn — optics displacing electrical links as compute speed and bandwidth rise. show quote
“As AI compute workloads increase in both speed and bandwidth, data center architects are turning to optical links as a primary means of connectivity.”
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Cash and short-term investments fell sequentially by $433.9 million to $2.7 billion as the company funded capacity expansion. show quote
“The Company held $2.7 billion in total cash, cash equivalents, and short-term investments at the end of the fourth quarter of fiscal year 2026, a decrease of $433.9 million from the end of the third quarter of fiscal year 2026.”
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From the call
On the call the constraint is supply, not demand: management said the 50% gross-margin threshold arrived far ahead of the revenue run rate it was modelled against, that pump lasers are effectively sold out, and that high-powered lasers for co-packaged optics are 'way behind' demand — with the CFO reiterating that the $7.8 billion GAAP charge is non-cash and paired with a $1.1 billion debt reduction.
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Non-GAAP gross margin crossed 50% well before the $2 billion quarterly run rate management had modelled for that threshold. show quote
“In addition to strong top line performance, non-GAAP gross margin crossed 50%. We had originally targeted this threshold at a $2 billion quarterly run rate. So this milestone came quite a bit sooner than expectations.”
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The CEO named high-powered lasers — the co-packaged and near-packaged optics input — as the place where the company is furthest behind customer demand, and as the vector that changed most since the prior quarter. show quote
“We are way behind. Our shipments, unfortunately, on high-powered lasers. So we -- if one vector has really changed since the last time you and I talked, I'd say it's your high-powered lasers, and we are very much further behind. The demand signals increased and we are very much further behind relative to our ability to supply.”
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The head of the business units drew the distinction that matters for reading that shortfall: the capacity ramp is executing to plan and the gap opened because demand accelerated, not because the ramp slipped. show quote
“I think just to clarify -- yes, just to clarify, our execution of the ramp is on track, right? We're further behind because our -- the demand has accelerated.”
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Pump laser shipments grew more than 80% year over year and management expects to stay effectively sold out despite adding capacity. show quote
“Pump laser shipments surged more than 80% year-over-year, and we will remain effectively sold out for the foreseeable future despite our rapid capacity expansion.”
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In the Systems business, component-level supply tightness — not customer demand — held shipments below what the market would have taken. show quote
“While pockets of supply chain tightness for certain components capped shipments below total market demand, our factories executed to our aggressive plan for both product lines.”
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The CFO tied the GAAP charge to a real balance-sheet improvement: convertible debt down $1.1 billion, roughly 35% of the outstanding, with the $7.8 billion charge explicitly non-cash. show quote
“This action reduces our debt by $1.1 billion or approximately 35% of our outstanding convertible debt. This transaction resulted in a one-time non-cash GAAP charge of $7.8 billion, bringing our fourth quarter GAAP net loss to $7.2 billion.”
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The cloud transceiver mix is still predominantly 800G, with 1.6T only beginning to ship — so the higher-ASP transition is ahead of the company, not behind it. show quote
“The bulk of our cloud transceiver shipments in the quarter were at 800 gig speeds, and we began shipping 1.6T transceivers as planned.”
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as of 2026-08-28