TNDM

Tandem Diabetes Care, Inc.
NasdaqGMUSDEQUITY Healthcare DELAYED
Last price
16.16
▼ 0.36 (2.18%)
MARKET · —

Price

1D — H — L — Range — Vol —
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
16.45
Prev close
16.52
Day high
17.05
Day low
15.94
Volume
1.48M
Market cap
$1.12B
P/E (TTM)
—
52W range
12.26 – 29.65

Day trading desk

Current session · delayed
Gap from prior close
-0.42%
Prior close 16.52
VWAP
16.23
-0.46% from price
Relative volume
1.39×
Normal
Session range
20.00%
15.00 – 18.00
Position in range
39%
Mid range
ATR (14D)
1.01
6.24% of price
Prior day high
16.95
PDH
Prior day low
16.14
PDL
Bid / ask spread
—
Quote not published
Session volume
2.77M
Avg 1.99M

VWAP and the session figures are computed from the delayed intraday series on this page, so they lag the live tape and will not match a broker's real-time VWAP exactly. Turn on Prior day H/L/C, Opening range and Volume profile in the chart's Studies menu to see these levels drawn on price.

Trailing performance

Price return · vs SPY
Returnvs SPY
1W
-2.47% -4.4%
1M
-18.79% -19.9%
3M
+6.60% +2.1%
6M
-11.60% -29.8%
YTD
-26.48% -40.7%
1Y
+9.86% -6.6%
3Y
-22.20% -104.4%
5Y
— —

Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.

Unusual options activity

Account required
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
Free account required

Contracts trading at or above their open interest, ranked by notional and where the print landed.

Free account

5 more panels on TNDM open with an account.

Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.

Insider net activity

6m · Form 4 rollup
Net shares
0
Net selling
Buy transactions
0
0 shares
Sell transactions
0
—
Net transactions
0
Buys less sells
Sell : buy shares
—
Not enough filings
Insider-held shares
814.07K
Total on file

Insider transactions

Account required
DateInsiderAction SharesValueHeld
Aug 14, 26
HANSEN SHANNON MARIE
Officer
— 3.01K — Direct
Aug 14, 26
GASSER ELIZABETH ANNE
Officer
— 3.01K — Direct
Aug 14, 26
MORRISON SUSAN M
Officer
— 2.83K — Direct
Aug 14, 26
VOSSELLER LEIGH A
Chief Financial Officer
— 4.12K — Direct
Aug 14, 26
KYRILLOS JEAN-CLAUDE
Chief Operating Officer
— 1.01K — Direct
Aug 14, 26
SHERIDAN JOHN F
Chief Executive Officer
— 15.92K — Direct
Aug 14, 26
CARPENTER RICK
Chief Technology Officer
— 2.51K — Direct
Jul 15, 26
KYRILLOS JEAN-CLAUDE
Chief Operating Officer
— 3.64K — Direct
Jun 2, 26
GASSER ELIZABETH ANNE
Officer
STOCK 7.16K $0 Direct
May 21, 26
CHA MYOUNGIL
Director
— 8.76K — Direct
May 21, 26
MALAGUEIRA JOAO PAULO FALCAO
Director
— 8.76K — Direct
May 21, 26
SODHI RAJWANT
Director
— 8.76K — Direct
May 21, 26
MCGRODDY-GOETZ KATHLEEN
Director
— 8.76K — Direct
May 21, 26
ALLEN DICK P
Retired
— 8.76K — Direct
What this is, and what it is not

These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.

A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.

This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.

Free account required

Officer and director trades in their own stock, straight from Form 4 filings.

Insider holders

10 reporting
NameRelationShares heldLatest
ALLEN DICK P
Retired 50.90K Conversion of Exercise of derivative security
BLICKENSTAFF KIM D
Director — Sale
CARPENTER RICK
Chief Technology Officer 32.15K Conversion of Exercise of derivative security
GASSER ELIZABETH ANNE
Officer 34.51K Conversion of Exercise of derivative security
HANSEN SHANNON MARIE
Officer 33.59K Conversion of Exercise of derivative security
MORRISON SUSAN M
Officer 52.79K Conversion of Exercise of derivative security
NOVARA MARK DAVID
Officer 40.32K Conversion of Exercise of derivative security
SHERIDAN JOHN F
Chief Executive Officer 160.26K Conversion of Exercise of derivative security
TWOMEY CHRISTOPHER J
Director 37.11K Conversion of Exercise of derivative security
VOSSELLER LEIGH A
Chief Financial Officer 77.62K Conversion of Exercise of derivative security

Fundamentals

TTM · reported
Market cap$1.12B
Enterprise value$1.41B
Revenue (TTM)$1.04B
Gross profit$583.32M
EBITDA$-25.03M
Net income$-63.31M
EPS (TTM)$-0.89
Free cash flow$-43.95M
Total cash$456.00M
Total debt$739.25M
Book value / share$1.88
Shares outstanding69.58M
Float63.76M
Short % of float24.01%
Dividend yield0.00%
Beta (5Y)1.66

Valuation & profitability ratios

Account required
Trailing P/E—
Forward P/E94.67
PEG ratio—
Price / sales—
Price / book8.62
EV / revenue1.35
EV / EBITDA-56.23
Gross margin56.01%
Operating margin-5.42%
Profit margin-6.08%
Return on equity-48.03%
Return on assets-2.65%
Debt / equity566.96
Current ratio3.18
Free account required

Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.

Financial statements

As reported · 4 years · 6 quarters
Blank means not reported, not zero
Line item2025202420232022YoY
Total revenue $1.01B$940.20M$747.72M$801.22M +7.9%
Operating revenue $1.01B$940.20M$747.72M$801.22M +7.9%
Cost of revenue $468.72M$450.63M$380.03M$388.23M +4.0%
Gross profit $546.01M$489.57M$367.69M$412.99M +11.5%
Research & development $268.33M$198.88M$248.42M$170.15M +34.9%
Selling, general & admin $444.99M$389.82M$352.50M$335.68M +14.2%
Total operating expense $713.32M$588.70M$600.92M$505.83M +21.2%
Operating income -$167.31M-$99.13M-$233.23M-$92.85M -68.8%
Net interest income $1.18M$10.58M$12.98M-$152.00K -88.9%
Pre-tax income -$200.27M-$91.87M-$220.25M-$92.85M -118.0%
Tax provision $4.44M$4.16M$2.36M$1.74M +6.8%
Net income -$204.71M-$96.03M-$222.61M-$94.59M -113.2%
Net income to common -$204.71M-$96.03M-$222.61M-$94.59M -113.2%
Basic EPS -3.04-1.47-3.43-1.47 -106.8%
Diluted EPS -3.04-1.47-3.43-1.47 -106.8%
EBIT -$194.22M-$86.36M-$212.18M-$88.54M -124.9%
EBITDA -$176.56M-$69.75M-$196.46M-$74.21M -153.1%
Basic shares 67.28M65.45M64.97M64.15M +2.8%
Diluted shares 67.28M65.45M64.97M64.15M +2.8%

Options analytics

Account required
Put / call volume
0.16
Call-heavy session
Put / call open interest
1.65
Positioning, not flow
Max pain
16.00
-1.0% from spot
ATM implied vol
98.3%
Nearest strike to spot
Skew (10% OTM)
-81.2%
Calls bid over puts
Call volume
119
Contracts, this expiry
Put volume
19
Contracts, this expiry
Heaviest call OI
16.00
78 contracts
Heaviest put OI
15.00
135 contracts

Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.

Free account required

Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.

Earnings

History & consensus estimates
Reported vs expected · EPS
QuarterEst.ActualSurprise
Jun 2026 -0.32-0.31 +2.8%
Mar 2026 -0.44-0.30 +32.2%
Dec 2025 -0.09-0.01 +88.9%
Sep 2025 -0.34-0.31 +8.9%
Forward consensus
PeriodEPSAnalystsRevenueGrowth
Current quarter -0.24 19 $265.85M +6.7%
Next quarter 0.18 19 $304.37M +4.8%
Current year -0.67 20 $1.07B +5.7%
Next year 0.17 20 $1.20B +12.4%

Analyst targets & ownership

Account required
Mean target$28.35
High target$50.00
Low target$18.00
Implied upside75.43%
Analyst count20
ConsensusBUY
Strong buy / Buy3 / 11
Hold10
Sell / Strong sell0 / 0
Held by insiders1.17%
Held by institutions115.89%
Institutions holding373
Free account required

Price targets, consensus spread, insider and institutional ownership.

Moving averages & technicals

Computed from 2Y daily closes
SMA 10
16.23
-0.43% from price
SMA 20
16.83
-4.00% from price
SMA 50
19.49
-17.09% from price
SMA 100
17.80
-9.22% from price
SMA 200
19.38
-16.62% from price
EMA 12
16.63
-2.82% from price
EMA 26
17.52
-7.78% from price
EMA 50
18.17
-11.06% from price
RSI (14)
38.1
Neutral
MACD (12,26,9)
-0.89
Hist 0.07
ATR (14)
1.01
6.24% of price
Realised vol 30D
52.2%
Annualised
Bollinger upper
18.55
20, 2σ
Bollinger lower
15.11
20, 2σ
50 / 200 cross
Golden
19.49 vs 19.38
Trend bias
Below 200
-16.62%

Options chain

Account required
Expiry
Spot 16.16
Calls
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Puts
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Free account required

Every listed expiry, both sides of the book, with volume, open interest and implied volatility.

Risk profile

Daily returns · 1Y window
Beta vs SPY
1.01
More volatile than market
Correlation to SPY
0.17
Largely independent
Realised vol 30D
52.2%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-54.6%
Peak to trough
Max drawdown 5Y
-93.4%
Peak to trough
ATR 14
1.01
6.24% of price
Beta (reported)
1.66
5Y monthly, from filing

Short interest

Semi-monthly exchange report · lags by ~2 weeks
Shares short
12.47M
Prior 10.59M
Change vs prior
+17.8%
Shorts adding
% of float
24.01%
Heavily shorted
% of shares out
17.93%
Against total outstanding
Days to cover
8.1
Crowded exit
Float
63.76M
Freely tradeable shares

Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.

Rating changes

213 on file
DateFirm ActionFromTo
Sep 30, 26 Citigroup MAINTAINED Neutral Neutral
Sep 24, 26 Truist Securities MAINTAINED Buy Buy
Aug 21, 26 William Blair INITIATED — Outperform
Aug 7, 26 Citigroup MAINTAINED Neutral Neutral
Aug 7, 26 RBC Capital MAINTAINED Outperform Outperform
Jul 15, 26 Mizuho MAINTAINED Neutral Neutral
Jun 23, 26 Deutsche Bank INITIATED Buy Hold
Jun 1, 26 Wells Fargo UPGRADE Equal-Weight Overweight
May 28, 26 Citigroup MAINTAINED Neutral Neutral
May 18, 26 B of A Securities MAINTAINED Neutral Neutral
May 12, 26 Benchmark INITIATED — Hold
May 11, 26 Truist Securities MAINTAINED Buy Buy

Dividends & splits

Declared · from the issuer
Forward rate—
Forward yield0.00%
5-year avg yield—
Payout ratio0.00%
Ex-dividend date—
Next pay dateOct 10, 2017
Last split1:10
Split dateOct 10, 2017

PRIVATE STRATEGY · BY QUALIFICATION

The same data. A different seat.

The research you are reading is the input layer for a discretionary options program we run for a small number of qualified investors. Minimum $1,000,000.