Who Owns TANDEM DIABETES CARE INC (TNDM)? -- Institutional Holders (2026-06-30)
333 institutions reported holding $1.60B of TANDEM DIABETES CARE INC (TNDM) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($181.4M), VANGUARD GROUP INC ($120.6M), UBS Group AG ($95.4M), Sessa Capital IM, L.P. ($77.0M), Linden Advisors LP ($71.2M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | BlackRock, Inc. | $181.4M | 11.6M | Added |
| 2 | VANGUARD GROUP INC | $120.6M | 8.0M | Added |
| 3 | UBS Group AG | $95.4M | 6.3M | Trimmed |
| 4 | Sessa Capital IM, L.P. | $77.0M | 5.1M | Added |
| 5 | Linden Advisors LP | $71.2M | 0 | Added |
| 6 | First Light Asset Management, LLC | $51.1M | 3.4M | Added |
| 7 | BANK OF MONTREAL /CAN/ | $48.6M | 564,966 | Added |
| 8 | STATE STREET CORP | $43.0M | 2.9M | Added |
| 9 | GW&K Investment Management, LLC | $38.8M | 2.6M | Trimmed |
| 10 | JENNISON ASSOCIATES LLC | $35.2M | 2.3M | Added |
| 11 | Paradice Investment Management LLC | $30.5M | 2.0M | Trimmed |
| 12 | JACOBS LEVY EQUITY MANAGEMENT, INC | $30.3M | 2.0M | Added |
| 13 | Freestone Grove Partners LP | $28.2M | 1.9M | Added |
| 14 | CITADEL ADVISORS LLC | $28.0M | 1.9M | Trimmed |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | $27.2M | 1.8M | Added |
| 16 | Driehaus Capital Management LLC | $27.0M | 1.8M | Trimmed |
| 17 | Opti Capital Management, LP | $26.4M | 0 | New |
| 18 | Balyasny Asset Management L.P. | $23.9M | 0 | New |
| 19 | GOLDMAN SACHS GROUP INC | $22.9M | 862,301 | Added |
| 20 | MILLENNIUM MANAGEMENT LLC | $19.8M | 1.3M | Added |
| 21 | Woodline Partners LP | $19.7M | 1.3M | New |
| 22 | ArrowMark Colorado Holdings LLC | $19.6M | 1.3M | Trimmed |
| 23 | Context Capital Management, LLC | $19.0M | 0 | Trimmed |
| 24 | FMR LLC | $18.3M | 976,432 | Added |
| 25 | Empyrean Capital Partners, LP | $17.7M | 0 | New |
Source: SEC Form 13F filings · as of 2026-06-30