Tandem Diabetes Care Inc (NASDAQ:TNDM) appears in 259 institutional 13F filings for the quarter ending December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 31 Mar, 2026 | 10,690,844 | -458,337 | -4.11% | $204,943,480.00 |
| Sessa Capital IM, L.P. | 31 Mar, 2026 | 4,730,757 | -269,243 | -5.38% | $90,688,612.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 3,993,333 | 3,993,333 | 0.00% | $76,552,194.00 |
| ArrowMark Colorado Holdings LLC | 31 Mar, 2026 | 3,103,609 | 213,918 | 7.40% | $59,496,185.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 3,038,919 | 3,038,919 | 0.00% | $58,256,077.00 |
| GW&K Investment Management, LLC | 31 Mar, 2026 | 2,689,106 | 13,949 | 0.52% | $51,550.00 |
| State Street Corp | 31 Mar, 2026 | 2,662,260 | 20,536 | 0.78% | $51,035,524.00 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 2,304,414 | 694,072 | 43.10% | $44,175,616.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 2,218,922 | -1,147,878 | -34.09% | $42,536,734.00 |
| CITADEL ADVISORS LLC | 31 Mar, 2026 | 2,192,667 | 104,064 | 4.98% | $42,033,426.00 |
| UBS Group AG | 31 Mar, 2026 | 2,047,801 | 1,629,968 | 390.10% | $39,256,344.00 |
| Paradice Investment Management LLC | 31 Mar, 2026 | 2,042,425 | -35,320 | -1.70% | $39,153,287.00 |
| TWO SIGMA INVESTMENTS, LP | 31 Mar, 2026 | 1,864,194 | 662,667 | 55.15% | $35,736,599.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 1,679,863 | 30,480 | 1.85% | $32,209,339.00 |
| JENNISON ASSOCIATES LLC | 31 Mar, 2026 | 1,658,448 | -362,928 | -17.95% | $31,792,448.00 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 31 Mar, 2026 | 1,523,946 | -129,762 | -7.85% | $29,214,045.00 |
| MARSHALL WACE, LLP | 31 Mar, 2026 | 1,442,472 | 566,941 | 64.75% | $27,652,189.00 |
| Morgan Stanley | 31 Mar, 2026 | 1,357,542 | -722,955 | -34.75% | $26,024,095.00 |
| Freestone Grove Partners LP | 31 Mar, 2026 | 1,330,742 | -112,094 | -7.77% | $25,510,324.00 |
| First Light Asset Management, LLC | 31 Mar, 2026 | 1,314,715 | 225,222 | 20.67% | $25,203,087.00 |