The Filing Desk

Bel Fuse vs Knowles

Bel Fuse BELFB · Knowles KN · Electronic Components

Bel Fuse reported revenue of $676 million in fiscal 2025, about the same as Knowles' $593 million in fiscal 2025. Bel Fuse's revenue grew 26.3% in its latest year, and Knowles' grew 7.2%. Bel Fuse had an operating margin of 16.4%, against 11.8% at Knowles.

Side by side

Bel FuseKnowles
Latest fiscal yearFY2025, Dec 31, 2025FY2025, Dec 31, 2025
Revenue$676M$593M
Revenue growth26.3%7.2%
Revenue growth a year, last 5 years7.7%−4.9%
Gross margin39.1%43.2%
Operating margin16.4%11.8%
Net margin9.1%7.5%
Free cash flow$69M—
Free cash flow margin10.2%—
Return on capital15.1%6.7%
Net debt to EBITDA1.0x0.6x
Dividends and buybacks$4M$65M
Change in diluted share count—−2.3%
Last close$206.79$31.27
P/E at the last close—38.1×
Insider trades, last 12 monthssold $18.1 millionsold $25.0 million
Piotroski F-score——
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.

Ten years

Revenue
US$ billions, fiscal years
Bel FuseKnowles
Operating margin
Percent of revenue
Bel FuseKnowles
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Bel FuseKnowles

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Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the Bel Fuse and Knowles pages.