What is TNDM's market cap?

$1.33B, based on the Nov 4 close of $19.05.

Does Tandem Diabetes Care pay a dividend?

No regular cash dividend has been paid in the last year.

How much of TNDM is sold short?

15.1M shares, 21.9% of float, as of Oct 15, 2026.

What sector is TNDM in?

Healthcare, in the Surgical Instruments industry.

NASDAQ · TNDMHealthcareSurgical Instruments

Tandem Diabetes Care, Inc. (TNDM)

$19.05+7.93%

Close Nov 4, 2026 · split-adjusted

Nov 4, 2026$19.05▲ 25.25% in range

Nov 4, 2025Low $12.82 · High $28.26Nov 4, 2026

What changed · written from our data

As of Nov 4, 2026

Tandem Diabetes Care closed at $19.05 on Nov 4, up 7.93%, 32.6% below its 52-week closing high. Volume of 3.7M shares was 1.62× its 20-day average (above normal).

Split-adjusted performance: +17.9% over one month, +5.7% over six months, +32.7% over one year.

In the quarter ended Jun 30, 2026, revenue was $254.56M, up 5.8% from a year earlier, with a net margin of -8.3%.

Short interest was 15.1M shares at the Oct 15 settlement, up 12.8% from the prior report (21.9% of float, 6.9 days to cover).

Market cap$1.33B69.6M shares

Revenue · quarter$254.6M+5.8% YoY

Diluted EPS$-0.31—

P/E · TTM—P/S 1.3×

Net margin-8.3%Gross 56.9%

Dividend yieldNone

52-week range12.82 – 28.26−32.6% from high

Volume3.7M1.62× 20-day avg

Volatility · 60d53.3%Annualised

Short % of float21.9%6.9 days to cover

Net cash-$146.6MCash $456.0M

Next earnings—Not scheduled

Split-adjusted performance

1W −3.2%1M +17.9%3M +1.4%6M +5.7%YTD −13.3%1Y +32.7%3Y +10.4%5Y −85.4%

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Surgical Instruments

Percentile among 110 companies (100 = best)

6-month momentum57

Revenue growth40

Net margin48

Value (low P/E)—

Size74

Industry medians: 6-month return −4.0%, revenue growth +8.9%, net margin −8.2%, P/E 30.5×.

Short interest

Details →

Shares short15.1M+12.8% vs prior

Days to cover6.9Settled Oct 15

% of float21.9%

Short vol. 10d63.8%of daily volume

Closest peers by size in Surgical Instruments

Company	Price	Today	6M	Rev. growth	Net margin	P/E	Mkt cap
TNDMTandem Diabetes Care	$19.05	+7.93%	+5.7%	+5.8%	−8.3%	—	$1.33B
AORTArtivion	$26.45	+11.56%	−23.8%	+11.3%	−10.7%	—	$1.29B	Compare
ATECAlphatec Holdings	$8.28	+10.84%	+18.5%	+12.6%	−2.5%	—	$1.27B	Compare
PRCTPROCEPT BioRobotics	$21.66	+7.39%	−12.7%	+19.3%	−28.4%	—	$1.24B	Compare
IARTIntegra LifeSciences	$14.82	+8.73%	+5.9%	+2.3%	3.6%	88.6	$1.15B	Compare
SGPSpyGlass Pharma	$34.45	0.00%	+37.5%	—	—	—	$1.15B	Compare
IRMDiRadimed	$88.58	+9.21%	+2.7%	+14.2%	26.9%	47.2	$1.13B	Compare
SIBNSI-BONE	$24.95	+4.96%	+92.1%	+15.2%	−7.3%	—	$1.12B	Compare
NVCRNovoCure Limited	$14.61	+8.79%	−11.4%	+15.7%	−5.4%	—	$1.71B	Compare

News about Tandem Diabetes Care

All news →

Is it the Right Time to Hold TNDM Stock in Your Portfolio?Zacks Investment Research · Oct 9, 2026Neutral Reasons to Retain Tandem Diabetes Stock in Your Portfolio NowZacks Investment Research · Sep 9, 2026Neutral FDA Flags High-Risk Recall For Tandem Diabetes Mobi PumpsBenzinga · Apr 24, 2026▼ Negative Tandem Diabetes Care, Inc. Investigated by the Portnoy Law FirmGlobeNewswire Inc. · Mar 27, 2026▼ Negative

Quick answers

What does Tandem Diabetes Care do?: Tandem Diabetes designs, manufactures, and markets durable insulin pumps for individuals with diabetes. The firm first entered this market in 2012 and has since introduced multiple generations of pumps leading to its current t:slim X2 device.
What is TNDM's market cap?: $1.33B, based on the Nov 4 close of $19.05.
Does Tandem Diabetes Care pay a dividend?: No regular cash dividend has been paid in the last year.
How much of TNDM is sold short?: 15.1M shares, 21.9% of float, as of Oct 15, 2026.
What sector is TNDM in?: Healthcare, in the Surgical Instruments industry.

About Tandem Diabetes Care

Tandem Diabetes designs, manufactures, and markets durable insulin pumps for individuals with diabetes. The firm first entered this market in 2012 and has since introduced multiple generations of pumps leading to its current t:slim X2 device. The firm recently launched its smaller Mobi pump and continues to work on the Sigi tubeless patch pump. Tandem is also developing a fully closed-loop algorithm for its pumps. Nearly three-quarters of total revenue is derived from the US, with the remainder primarily from other developed nations. The pumps themselves generate just over half of total sales, and another one-third is from disposable infusion sets that need to be changed over every 3 to 7 days.

HQ: San Diego, CA2,500 employeesListed Nov 14, 2013tandemdiabetes.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology