Which hedge funds own TNDM? TANDEM DIABETES CARE INC, Q2 2026 13F holders
53 tracked hedge funds disclosed a position in TNDM (TANDEM DIABETES CARE INC) in their Q2 2026 13F filings, worth $579.1m in total. The largest holder by portfolio weight is KVP Capital Advisors, LP at 3.3% of its book. 19 opened a new position this quarter: KVP Capital Advisors, LP, Opti Capital Management, LP, Fort Baker Capital Management LP, Empyrean Capital Partners, LP. 5 exited: Defilade Capital Management, L.P., Twinbeech Capital LP, Marshall Wace, LLP.
- 53
- Holders Tracked managers whose filing for the quarter reports a long equity position in the security.
- 19
- New this quarter Holders whose previous filing (at most two quarters earlier) did not report the security.
- 5
- Exited this quarter Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
- $127m
- Inflow, new holders Combined value of the positions the new holders reported for the quarter.
- $65.2m
- Outflow, exits Combined value the exiting managers reported for the security in their previous filing.
- $579m
- Combined value Sum of the holders' reported positions in the security.
- 4.3%
- Share of managers holding Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.
Holders, Q2 2026
Exited since the previous filing
| Defilade Capital Management, L.P. | 2.1% | $14.6m |
| Twinbeech Capital LP | 0.1% | $985k |
| Marshall Wace, LLP | 0.03% | $27.7m |
| Baillie Gifford | 0.02% | $20.9m |
| Renaissance Technologies LLC | 0.0% | $1.1m |
Ownership over time
Who discovered TNDM first? Beta
The run: Q4 2017 → Q4 2021, ×64
| First Light Asset Management, LLC high conviction | Q1 2018 | – | +23.2 pts |
Split-adjusted quarter-end prices, excluding dividends. They describe the stock while each manager held it, not the return it earned.