Institutional shares held 69.5 Million
3.11M calls
181K puts
Total value of holdings $1.17B
$52.5M calls
$3.05M puts
Market Cap $1.08B
64,221,200 Shares Out.
Institutional ownership 108.25%
# of Institutions 330


Latest Institutional Activity in TNDM

Top Purchases

Q1 2025
Stephens Investment Management Group LLC Shares Held: 1.71M ($28.8M)
Q1 2025
Envestnet Asset Management Inc Shares Held: 319K ($5.37M)
Q1 2025
Truist Financial Corp Shares Held: 139K ($2.33M)
Q1 2025
Cerity Partners LLC Shares Held: 76K ($1.28M)
Q1 2025
Sg Americas Securities, LLC Shares Held: 16.4K ($276K)

Top Sells

Q1 2025
Chicago Capital, LLC Shares Held: 20.7K ($349K)
Q1 2025
Victory Capital Management Inc Shares Held: 12.2K ($206K)
Q1 2025
Mirae Asset Global Investments Co., Ltd. Shares Held: 36.1K ($608K)
Q1 2025
Gamma Investing LLC Shares Held: 2.2K ($37.1K)
Q1 2025
New York State Common Retirement Fund Shares Held: 198K ($3.33M)

About TNDM

Tandem Diabetes Care, Inc., a medical device company, designs, develops, and commercializes various products for people with insulin-dependent diabetes in the United States and internationally. The company's flagship product is the t:slim X2 insulin delivery system, a pump platform that comprises t:slim X2 pump, its 300-unit disposable insulin cartridge, and an infusion set. It also provides t:slim X2 insulin with Basal-IQ and control IQ technology; t:slim X2 with G5 Integration; and Tandem Device Updater, a tool that allows users to update their pump's software. In addition, the company offers t:connect, a web-based data management application, which provides a visual way to display diabetes therapy management data from the pump, continuous glucose monitoring, and supported blood glucose meters for users, their caregivers, and their healthcare providers; and Sugarmate, a mobile app for people with diabetes who use insulin. It has development and commercialization agreements with Dexcom, Inc. and Abbott Laboratories. The company was formerly known as Phluid Inc. and changed its name to Tandem Diabetes Care, Inc. in January 2008. Tandem Diabetes Care, Inc. was incorporated in 2006 and is headquartered in San Diego, California.


Insider Transactions at TNDM

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
301K Shares
From 28 Insiders
Exercise of conversion of derivative security 260K shares
Grant, award, or other acquisition 8.82K shares
Other acquisition or disposition 21.1K shares
Open market or private purchase 11.1K shares
Sell / Disposition
161K Shares
From 13 Insiders
Payment of exercise price or tax liability 86.1K shares
Other acquisition or disposition 21.1K shares
Bona fide gift 8.53K shares
Open market or private sale 45K shares

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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