The Filing Desk

Penumbra vs Tandem Diabetes Care

Penumbra PEN · Tandem Diabetes Care TNDM · Health Care Equipment

Penumbra reported revenue of $1.4 billion in fiscal 2025, 1.4 times Tandem Diabetes Care's $1.0 billion in fiscal 2025. Penumbra's revenue grew 17.5% in its latest year, and Tandem Diabetes Care's grew 7.9%. Penumbra had an operating margin of 13.5%, against -18.4% at Tandem Diabetes Care. Free cash flow was $175 million at Penumbra and −$30 million at Tandem Diabetes Care.

Side by side

PenumbraTandem Diabetes Care
Latest fiscal yearFY2025, Dec 31, 2025FY2025, Dec 31, 2025
Revenue$1.4B$1.0B
Revenue growth17.5%7.9%
Revenue growth a year, last 5 years20.2%15.3%
Gross margin67.1%53.8%
Operating margin13.5%−18.4%
Net margin12.7%−20.2%
Free cash flow$175M−$30M
Free cash flow margin12.5%−2.9%
Return on capital18.8%−85.5%
Net debt to EBITDA−2.5x—
Dividends and buybacks$0M$0M
Change in diluted share count0.1%2.8%
Last close$319.21$16.91
P/E at the last close80.4×—
Insider trades, last 12 monthssold $11.0 millionsold $36,911
Piotroski F-score7 of 94 of 9
Amounts in each company's own currency, US$ 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
PenumbraTandem Diabetes Care
Operating margin
Percent of revenue
PenumbraTandem Diabetes Care
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
PenumbraTandem Diabetes Care

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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 Penumbra and Tandem Diabetes Care pages.