Tandem Diabetes Care Inc
TNDM- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001438133
No open-market purchases or sales by Tandem Diabetes Care Inc insiders were filed in the last 90 days; 274 institutions reported holding it in 13F filings for Q2 2026, worth $1.19B in total; no superinvestor holds it.
13F holders, Q1 2023
Institutional positions in Tandem Diabetes Care Inc as of Mar 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 274
- −18 vs. Q4 2022
- Shares held
- 68.1M
- +3.82M (+5.9%) vs. Q4 2022
- Total value
- $2.77B
- −$120.0M (−4.2%) vs. Q4 2022
- New holders
- 34
- 117 more added
- Sold out
- 52
- 92 more reduced
3 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TNDM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 274 | $1.19B |
| Q1 2026 | 274 | $1.51B |
| Q4 2025 | 269 | $1.65B |
| Q3 2025 | 255 | $911.3M |
| Q2 2025 | 271 | $1.51B |
| Q1 2025 | 275 | $1.40B |
| Q4 2024 | 316 | $2.60B |
| Q3 2024 | 332 | $3.10B |
| Q2 2024 | 317 | $2.96B |
| Q1 2024 | 291 | $2.63B |
| Q4 2023 | 268 | $2.10B |
| Q3 2023 | 226 | $1.45B |
| Q2 2023 | 247 | $1.65B |
| Q1 2023 | 274 | $2.77B |
| Q4 2022 | 295 | $2.89B |
| Q3 2022 | 299 | $3.00B |
| Q2 2022 | 331 | $3.64B |
| Q1 2022 | 379 | $6.92B |
| Q4 2021 | 388 | $9.09B |
| Q3 2021 | 338 | $7.32B |
| Q2 2021 | 303 | $5.75B |
| Q1 2021 | 290 | $5.08B |
Institutions, Q1 2023
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −8,047−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −6,775−100.0% | Sold out |
| Ausdal Financial Partners, Inc. | 0 | $0 | 0.00% | −6,479−100.0% | Sold out |
| Kula Investments, LLC | 0 | $0 | 0.00% | −6,127−100.0% | Sold out |
| Northwestern Mutual Investment Management Company, LLC | 0 | $0 | 0.00% | −5,951−100.0% | Sold out |
| Securian Asset Management, Inc | 0 | $0 | 0.00% | −5,831−100.0% | Sold out |
| PEAK6 Investments LLC | 0 | $0 | 0.00% | −4,941−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −4,934−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −4,617−100.0% | Sold out |
| Whittier Trust Co | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Rockefeller Capital Management L.P. | 0 | $0 | 0.00% | −1,172−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −985−100.0% | Sold out |
| Advent Capital Management | 0 | $0 | 0.00% | −630−100.0% | Sold out |
| Fiduciary Alliance LLC | 0 | $0 | 0.00% | −542−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −406−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −171−100.0% | Sold out |
| Byrne Asset Management LLC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −99−100.0% | Sold out |
| Money Concepts Capital Corp | 0 | $0 | 0.00% | −90−100.0% | Sold out |
| Ancora Advisors, LLC | 0 | $0 | 0.00% | −94−100.0% | Sold out |
| Jones Financial Companies LLLP | 0 | $0 | 0.00% | −36−100.0% | Sold out |
| Ronald Blue Trust, Inc. | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| First Horizon Advisors, Inc. | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| AdvisorNet Financial, Inc | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Comerica Securities,inc. | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Ci Investments Inc. | 0 | $0 | 0.00% | −4−100.0% | Sold out |
| Comerica Bank | – | – | – | – | Not filed |
| CoreCap Advisors, LLC | – | – | – | – | Not filed |
| Heritage Wealth Management, LLC | – | – | – | – | Not filed |