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TNDM · Healthcare

TANDEM DIABETES CARE INC

USA Healthcare Filing: 2025-12-31
Smart-money confidence · 1 of 3 sources firing
Weak — few signals

No standout activity across the feeds we track.

Hedge funds
33
Congress
No data
Insiders
No data
Cross-source blend of hedge-fund breadth, Congress trades, and insider Form 4s.  ·  how the score works
◆ Next steps Interested in TANDEM DIABETES CARE INC? Here's what to do with it.
Not financial advice. Bogen Capital surfaces public SEC filings — you decide what to do with them.
Market cap
$1.2B
Industry
Medical Devices
Sector
Healthcare
Exchange
NasdaqGM
About TANDEM DIABETES CARE INC

Tandem Diabetes Care, Inc. designs, develops, and commercializes technology solutions for people living with diabetes in the United States and internationally. It's flagship products are the t:slim X2 insulin delivery system; and Tandem Mobi insulin pump, an automated insulin delivery system. The company also sells single-use products, including cartridges for storing and delivering insulin, and infusion sets that connect the insulin pump to the user's body. In addition, it offers Tandem Device Updater used to update the pump software from a personal computer; Tandem Source, a web-based data…

Who's behind the signal
Every informed buyer we can see on TNDM, across all three feeds.
Hedge funds · 6
Citadel Advisors Increased +5148%
Baillie Gifford & Co Increased +2%
D.E. Shaw & Co Decreased −3%
AQR Capital Management Decreased −18%
Congress · 0
No congressional trades on record.
Insiders
No significant Form 4 insider activity in the window.
Not a model pick — but on our radar. TANDEM DIABETES CARE INC isn't in the top-10 model right now, but 6 tracked investors hold it. Everything below is real signal from public filings — treat this as a watch candidate, not a conviction call.
6
Investors
1
New positions
2
Increasing
3
Decreasing
0
Unchanged
Price History
Loading price data...
Return: High: Low:
Who's Holding This Stock
Position sizes and recent activity from tracked institutional investors
Trust weight: 1.2×
New position
% of portfolio
0.0%
Position change
NEW
0.0% of Tudor Investment's portfolio
Trust weight: 1.0×
Increased +5148%
% of portfolio
0.0%
Position change
+5148%
0.0% of Citadel Advisors's portfolio
Trust weight: 1.4×
Increased +2%
% of portfolio
0.0%
Position change
+2%
0.0% of Baillie Gifford & Co's portfolio
Trust weight: 1.0×
Decreased −3%
% of portfolio
0.0%
Position change
−3%
0.0% of D.E. Shaw & Co's portfolio
Trust weight: 1.0×
Decreased −17%
% of portfolio
0.0%
Position change
−17%
0.0% of Millennium Management's portfolio
Trust weight: 1.0×
Decreased −18%
% of portfolio
0.0%
Position change
−18%
0.0% of AQR Capital Management's portfolio
Portfolio Allocation
How much of each investor's portfolio is allocated to TANDEM DIABETES CARE INC
⚠ Disclaimer: This page is for informational purposes only. Holdings data from SEC EDGAR 13F filings, delayed up to 135 days. Not a recommendation to buy or sell TANDEM DIABETES CARE INC or any security.

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