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F5 vs Lumentum

F5 and Lumentum are similar in size: $3.09bn and $3.01bn of revenue in their latest fiscal years. Lumentum grew faster (83.2% against 9.7%). F5 kept more of each dollar of sales as profit: a net margin of 22.4% against -230.1%. F5 carries less debt relative to equity (0.0% against 35.3%).

Latest fiscal yearF5FFIV, 2025LumentumLITE, 2026
Revenue $3.09bn $3.01bn
Revenue growth 9.7% 83.2%
Net income $692m −$6.94bn
Operating margin 24.8% 17.4%
Net margin 22.4% -230.1%
Return on equity 20.6% —
Free cash flow $906m $300m
Cash $1.34bn $2.04bn
Total debt $0 $1.64bn
Debt to equity 0.0% 35.3%
Dividend per share — —
Dividend yield — —
Share buybacks $502m —
Employees 6,578 13,757
Market value $18.80bn $59.78bn
Price vs our value range Within our value range —
Moat score 82 (Strong) 24 (Weak)
Insider trades, 12 months 0 buys, 97 sales 0 buys, 185 sales

Each figure is from the company's latest annual report and links to the page it comes from. Fiscal years can end on different dates. Market value and the value verdict use the delayed price shown on the stock pages. Not a recommendation.

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Figures from each company's latest annual report filed with the SEC (10-K or 20-F), as reported, with the fiscal year shown. Not investment advice. How we read filings: methodology.