TNDM Stock Down -34% after 5-Day Loss Streak

TNDM: Tandem Diabetes Care logo
TNDM
Tandem Diabetes Care

Tandem Diabetes Care (TNDM) stock hit day 5 of a continuous streak of days with losses, with cumulative losses over this period amounting to a -34% return. The company has lost about $233 Mil in value over the last 5 days, with its current market capitalization at about $678 Mil. The stock remains 71.9% below its value at the end of 2024. This compares with year-to-date returns of 8.4% for the S&P 500.

TNDM designs and commercializes insulin delivery systems, data management apps, continuous glucose monitoring, and blood glucose meters for people with insulin-dependent diabetes globally. Is this drop a warning sign or a setup for rebound? Deep dive with Buy or Sell TNDM.

Comparing TNDM Stock Returns With The S&P 500

The following table summarizes the return for TNDM stock vs. the S&P 500 index over different periods, including the current streak:
 

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Return Period TNDM S&P 500
1D -9.9% -0.3%
5D (Current Streak) -34.4% 0.7%
1M (21D) -35.1% 1.8%
3M (63D) -56.0% 12.6%
YTD 2025 -71.9% 8.4%
2024 21.8% 23.3%
2023 -34.2% 24.2%
2022 -70.1% -19.4%

 
What is the point? Sustained weakness can be more than noise. It often signals shifting sentiment or deeper concerns. A multi-day losing streak may warn of further downside, or present an opportunity to buy if fundamentals are intact. Take a look at what history tells you about whether past dips like this have been buying opportunities or traps: TNDM Dip Buyer Analysis.

Gains and Losses Streaks: S&P 500 Constituents

There are currently 49 S&P constituents with 3 days or more of consecutive gains and 62 constituents with 3 days or more of consecutive losses.
 

Consecutive Days # of Gainers # of Losers
3D 27 37
4D 11 14
5D 1 9
6D 8 0
7D or more 2 2
Total >=3 D 49 62

 
 
Key Financials for Tandem Diabetes Care (TNDM)

Last 2 Fiscal Years:

Metric FY2023 FY2024
Revenues $747.7 Mil $940.2 Mil
Operating Income $-233.2 Mil $-99.1 Mil
Net Income $-222.6 Mil $-96.0 Mil

Last 2 Fiscal Quarters:

Metric 2025 FQ1 2025 FQ2
Revenues $234.4 Mil $240.7 Mil
Operating Income $-120.9 Mil $-31.9 Mil
Net Income $-130.6 Mil $-52.4 Mil

 
The losing streak TNDM stock is currently on doesn’t inspire much confidence among investors. In contrast, Trefis High Quality (HQ) Portfolio, with a collection of 30 stocks, has a track record of comfortably outperforming its benchmark that includes all 3 – the S&P 500, S&P mid-cap, and Russell 2000 indices. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.