Who owns TNDM
271 institutions reported holding TNDM for 2026Q1, together 115% of the company, more than the 266 a quarter earlier.
271
Institutions reporting a position · as of 2026Q1 · up from 266 the quarter before
- Shares held by institutions
- 78.7M
Shares held by institutions · 115% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $1.51B
Reported value · at 2026-03-31 prices, not today's
- Opened vs closed
- 40 / 40
Opened vs closed · new positions against positions exited in the latest quarter
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 50
- New positions
- 40
- Positions exited
- 40
- Added to
- 93
- Reduced
- 88
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 271 | 78.7M | $1.51B |
| 2025Q4 | 266 | 74.9M | $1.65B |
| 2025Q3 | 252 | 74.8M | $908M |
| 2025Q2 | 266 | 80.7M | $1.50B |
| 2025Q1 | 272 | 73.0M | $1.40B |
| 2024Q4 | 314 | 72.0M | $2.59B |
| 2024Q3 | 327 | 72.8M | $3.09B |
| 2024Q2 | 312 | 73.0M | $2.94B |
| 2024Q1 | 288 | 73.8M | $2.61B |
| 2023Q4 | 266 | 70.9M | $2.10B |
| 2023Q3 | 224 | 69.6M | $1.44B |
| 2023Q2 | 245 | 67.2M | $1.65B |
| 2023Q1 | 271 | 68.0M | $2.76B |
| 2022Q4 | 294 | 64.3M | $2.89B |
| 2022Q3 | 297 | 62.6M | $3.00B |
| 2022Q2 | 325 | 61.2M | $3.62B |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Inc. | 10.7M | n/a | $205M |
| VANGUARD GROUP INC | 7.6M | n/a | $146M |
| Sessa Capital IM, L.P. | 4.7M | n/a | $91M |
| ArrowMark Colorado Holdings LLC | 3.1M | n/a | $59M |
| GW&K Investment Management, LLC | 2.7M | n/a | $52M |
| STATE STREET CORP | 2.7M | n/a | $51M |
| Driehaus Capital Management LLC | 2.3M | n/a | $44M |
| GOLDMAN SACHS GROUP INC | 2.2M | n/a | $43M |
| CITADEL ADVISORS LLC | 2.2M | n/a | $42M |
| UBS Group AG | 2.0M | n/a | $39M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
reading the register…