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# Who owns TANDEM DIABETES CARE INC (TNDM)? Elite investor 13F holders

2 tracked elite investors reported holding TANDEM DIABETES CARE INC as of 2026-06-30, including D.E. Shaw, Tudor Investment. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.

2 tracked investors currently reported holding · Latest report period: 2026-06-30 · Health Care · Health Care Equipment & Services

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…

## Reported holders and securities, including exits (up to 20)

| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|  --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [D.E. Shaw](https://ownershiptrace.com/13f/investors/98) | TANDEM DIABETES CARE INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 10288482.00 USD | 681808.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1009207/0001104659-26-097217-index.html) |
| [Tudor Investment](https://ownershiptrace.com/13f/investors/94675) | TANDEM DIABETES CARE INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 5473264.00 USD | 362708.000000 | Shares | add | [Original filing](https://www.sec.gov/Archives/edgar/data/923093/0000902664-26-003485-index.html) |
| [Renaissance Technologies LLC](https://ownershiptrace.com/13f/investors/63) | TANDEM DIABETES CARE INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1037389/0001037389-26-000059-index.html) |
| [Ancora Advisors / Ancora Holdings](https://ownershiptrace.com/13f/investors/101) | TANDEM DIABETES CARE INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1446114/0001446114-26-000012-index.html) |

Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.

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