Lumentum earnings jump as company cites AI data-center demand
Lumentum’s quarterly revenue rose 109.3% to $1.006 billion, while a debt charge drove a $7.2 billion GAAP loss.
By Sal Moretti · Money Reporter
2 min read
Lumentum earnings August 2026: The optical-technology company reported fourth-quarter revenue of $1.006 billion, a 109.3% jump from a year earlier, and said rising AI computing needs are pushing data-center designers toward optical links.
The results, released August 11, covered the quarter ended June 27. Lumentum’s earnings release put revenue at $480.7 million in the comparable quarter a year ago and $808.4 million in the preceding quarter. That means sales rose 24.5% sequentially as well as more than doubling year over year.
Chief Executive Michael Hurlston said the company sees a shift in how data centers connect their systems. As AI workloads demand greater speed and bandwidth, he said, data-center architects are making optical links a primary connectivity choice. That is management’s explanation for the demand backdrop, rather than an independently established cause of the revenue increase.
What did Lumentum report for the quarter?
- Revenue: $1.006 billion, up 109.3% year over year, according to Lumentum.
- Non-GAAP net income: $326.3 million, or $3.23 a diluted share.
- Non-GAAP gross margin: 50.4%; non-GAAP operating margin: 36.6%.
- Components revenue: $649.4 million, up 102.7% year over year.
- Systems revenue: $356.9 million, up 122.6% year over year.
The company’s headline GAAP result moved in the opposite direction. Lumentum posted a GAAP net loss of $7.2 billion, or $84.65 a diluted share. It said the figure was driven by the equitization of certain convertible-note amounts, including a one-time, non-cash $7.8 billion loss on debt extinguishment.
That distinction is key: GAAP and non-GAAP results use different accounting presentations. Lumentum reported the large GAAP loss alongside positive non-GAAP income after excluding items specified in its reconciliation.
What is Lumentum forecasting next?
For the first quarter of fiscal 2027, Lumentum forecast revenue of $1.225 billion to $1.275 billion, non-GAAP operating margin of 39.5% to 40.5%, and non-GAAP diluted earnings of $4.05 to $4.35 a share.
MarketWatch reported that FactSet-tracked analysts had expected $1.157 billion in quarterly revenue and $3.61 in adjusted earnings per share, below the company’s outlook. The publication also reported that shares were only fractionally higher shortly after the release, while Finviz later showed an after-hours gain of 2.44% at 7:59 p.m. Eastern time, reflecting different snapshots of trading.
For the full fiscal year, Lumentum reported revenue of $3.014 billion, up 83.2% from $1.645 billion in fiscal 2025. The company said its full-year GAAP loss was also affected by the same non-cash debt-extinguishment charge.
This story draws on original reporting from MarketWatch.