Tandem Diabetes Care Inc
TNDM- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001438133
No open-market purchases or sales by Tandem Diabetes Care Inc insiders were filed in the last 90 days; 274 institutions reported holding it in 13F filings for Q2 2026, worth $1.19B in total; no superinvestor holds it.
Q3 2025 vs. Q2 2025
How the institutions holding Tandem Diabetes Care Inc changed between Q2 2025 and Q3 2025.
All holders in Q3 2025All holders in Q2 2025
| Measure | Q2 2025 | Of which not filed for Q3 2025 | Q3 2025 | Change |
|---|---|---|---|---|
| Holders | 271 | 1 | 255 | −15 |
| Shares | 81.0M | 1.63K | 75.1M | −5.90M (−7.3%) |
| Value | $1.51B | $30.4K | $911.3M | −$595.7M (−39.5%) |
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (42)
Institutions that held Tandem Diabetes Care Inc at the end of Q3 2025 but not at the end of Q2 2025.
Sold out (57)
Institutions that held Tandem Diabetes Care Inc at the end of Q2 2025 and filed for Q3 2025 without it.
Not filed for Q3 2025 yet (1)
Institutions that held Tandem Diabetes Care Inc at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q2 2025 | Value, Q2 2025 |
|---|---|---|
| First Horizon Advisors, Inc. | 1,629 | $30.4K |