---
title: "Lumentum: Business Model"
description: "Lumentum revenue by business segment from its fiscal 2025 Form 10-K, with each part's share, growth and profitability explained."
canonical: https://www.getswoopr.com/stocks/companies/lumentum/business-model/
source: "Swoopr Investment: https://www.getswoopr.com"
---

# Lumentum: Business Model & Revenue Engine

## Direct Answer

Lumentum reports revenue across 2 business segments in its fiscal 2025 Form 10-K. Cloud Networking is the largest, with $1.4 billion of revenue (86% of the total), followed by Industrial Technology at $234 million (14%).

## How Does Lumentum Make Money?

Cloud Networking supplies 86% of revenue, so Lumentum's results move mostly with that one business; the others matter more for diversification than for the headline number. Between fiscal 2024 and 2025, Cloud Networking grew fastest (+30.0%) and Industrial Technology slowest (-14.6%), so the revenue mix tilts toward Cloud Networking while that gap lasts.

| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
| --- | --- | --- | --- | --- |
| Cloud Networking | $1.4 billion | $1.1 billion | 85.8% | 30.0% |
| Industrial Technology | $234 million | $274 million | 14.2% | -14.6% |

![Bar chart of Lumentum revenue by segment for fiscal 2025: Cloud Networking 85.8%, Industrial Technology 14.2%.](https://www.getswoopr.com/images/charts/lumentum-business-model-segment-mix.webp)
*Lumentum revenue by segment as a share of total revenue, from the table above. The largest is highlighted. Select the chart to open it full size.*

## What the Segment Figures Do Not Show

The rows above add up to 100% of Lumentum's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.

## Where These Numbers Come From

Every figure on this page is a value Lumentum reported in the segment note and revenue disclosures of its Form 10-K filed August 19, 2025 (accession 0001628280-25-040830), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.

Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.

## Frequently Asked Questions

### What are Lumentum's business segments?

In its fiscal 2025 Form 10-K, Lumentum reports revenue for Cloud Networking and Industrial Technology.

### Which part of Lumentum brings in the most revenue?

Cloud Networking, with $1.4 billion of revenue in fiscal 2025, or 86% of the total.

### Where does Lumentum report its segment results?

In the segment note to the financial statements in its Form 10-K, most recently filed August 17, 2026, alongside management's discussion of each segment's results.

## References

- [SEC EDGAR: Lumentum Holdings Inc. Form 10-K filed August 17, 2026](https://www.sec.gov/Archives/edgar/data/1633978/000162828026057358/lite-20260627.htm)
- [SEC EDGAR: Lumentum Holdings Inc. annual and quarterly filings](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1633978&type=10-K)
- [SEC: EDGAR application programming interfaces (XBRL frames and submissions data)](https://www.sec.gov/search-filings/edgar-application-programming-interfaces)
- [SEC: Financial Statement Data Sets](https://www.sec.gov/data-research/sec-markets-data/financial-statement-data-sets)

## Related Pages

- [Lumentum company dossier](https://www.getswoopr.com/stocks/companies/lumentum/)
- [Lumentum financial metrics](https://www.getswoopr.com/stocks/companies/lumentum/metrics/)
- [Lumentum financial risk indicators](https://www.getswoopr.com/stocks/companies/lumentum/risks/)
- [Lumentum peer comparison](https://www.getswoopr.com/stocks/companies/lumentum/competitors/)
- [Lumentum business model and revenue mix](https://www.getswoopr.com/stocks/companies/lumentum/business-model/)
- [Fundamental analysis guides](https://www.getswoopr.com/learn/fundamental-analysis/)

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