Tandem Diabetes Care (TNDM)

Healthcare · Medical Devices
$15.84 -1.98% on the day Market cap $1.2B 52-week range $12.26 to $29.65 Prices as of Oct 8, 2026

What the price implies

A reverse DCF: instead of guessing a fair value, it asks what growth today's price already assumes. How it works.

Tandem Diabetes Care's free cash flow was negative in fiscal 2025, so a cash-flow reverse DCF doesn't give a meaningful answer. The Modeling tab works from revenue and margins instead.

Fundamental grade

F

Five factors scored 1 to 9 from TNDM's latest numbers, weighted into one grade. It describes the business, not whether the stock is a buy.

Valuation4
Profitability1
Growth3
Financial health5
Cash efficiency0

Results from SEC filings

Fiscal years, from Tandem Diabetes Care's 10-K filings. Ten years of the full income statement, balance sheet and cash flow.

Fiscal year20212022202320242025
Revenue$703M$801M$748M$940M$1.0B
Net income$16M-$95M-$223M-$96M-$205M
Free cash flow$97M$16M-$59M$5M-$30M
EPS (diluted)$0.24-$1.47-$3.43-$1.47-$3.04
Operating margin3.2%-11.6%-31.2%-10.5%-18.5%

Where the revenue comes from

Revenue by products, fiscal 2025. Every breakdown, year by year.

Supplies and other$551M54%
Pump$464M46%

Superinvestors who own TNDM

From each investor's latest 13F filing (what a 13F shows). 1 of the investors we track hold it.

InvestorLast quarterValue% of portfolioQuarter
Cliff Asness
AQR Capital Management
Added $8M0.00%Q2 2026

Insider buying

Open-market purchases by Tandem Diabetes Care's executives and directors in the last 12 months, from SEC Form 4 filings. What insider buying tells you. Every purchase since records began.

DateInsiderSharesPriceValue
Mar 3, 2026 Gilbert Ray Cisneros, Jr.
0$23.74—
Mar 3, 2026 Gilbert Ray Cisneros, Jr.
0$23.74—
Mar 3, 2026 Gilbert Ray Cisneros, Jr.
0$23.74—

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In the full deep dive

DCF fair value per share
Yearly return (IRR) at today's price
Growth implied by revenue and margins
15+ years of statements and quarters

Questions

Are Tandem Diabetes Care insiders buying the stock?

3 open-market insider purchases of TNDM in the last 12 months, from SEC Form 4 filings.

Which superinvestors own Tandem Diabetes Care?

1 of the superinvestors Investingly tracks hold TNDM in their latest 13F, including Cliff Asness.

Prices and ratios as of Oct 8, 2026; statements from SEC filings. Information only, not investment advice. Superinvestor holdings come from 13F filings, which are filed up to 45 days after each quarter ends.