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 2025
Institutional positions in Tandem Diabetes Care Inc as of Mar 31, 2025. 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
- 275
- −38 vs. Q4 2024
- Shares held
- 73.1M
- +1.50M (+2.1%) vs. Q4 2024
- Total value
- $1.40B
- −$1.18B (−45.7%) vs. Q4 2024
- New holders
- 40
- 107 more added
- Sold out
- 78
- 85 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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 2025
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −14,147−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −12,796−100.0% | Sold out |
| Mutual of America Capital Management LLC | 0 | $0 | 0.00% | −9,949−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −9,225−100.0% | Sold out |
| Lawson Kroeker Investment Management Inc | 0 | $0 | 0.00% | −8,500−100.0% | Sold out |
| Aviva PLC | 0 | $0 | 0.00% | −8,361−100.0% | Sold out |
| Inceptionr LLC | 0 | $0 | 0.00% | −8,273−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −8,167−100.0% | Sold out |
| Stephens Inc | 0 | $0 | 0.00% | −7,890−100.0% | Sold out |
| LVW Advisors, LLC | 0 | $0 | 0.00% | −7,798−100.0% | Sold out |
| Cresset Asset Management, LLC | 0 | $0 | 0.00% | −7,644−100.0% | Sold out |
| Creative Planning | 0 | $0 | 0.00% | −7,582−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −7,490−100.0% | Sold out |
| Pictet Asset Management Holding SA | 0 | $0 | 0.00% | −7,465−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −7,378−100.0% | Sold out |
| Oppenheimer & Co Inc | 0 | $0 | 0.00% | −6,922−100.0% | Sold out |
| Regions Financial Corp | 0 | $0 | 0.00% | −6,879−100.0% | Sold out |
| Keybank National Association | 0 | $0 | 0.00% | −6,793−100.0% | Sold out |
| 180 Wealth Advisors, LLC | 0 | $0 | 0.00% | −6,776−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −6,740−100.0% | Sold out |
| Quantitative Investment Management, LLC | 0 | $0 | 0.00% | −6,706−100.0% | Sold out |
| Envestnet Portfolio Solutions, Inc. | 0 | $0 | 0.00% | −6,560−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −6,205−100.0% | Sold out |
| RWC Asset Management LLP | 0 | $0 | 0.00% | −6,147−100.0% | Sold out |
| Private Advisor Group, LLC | 0 | $0 | 0.00% | −6,135−100.0% | Sold out |
| Pathstone Holdings, LLC | 0 | $0 | 0.00% | −6,124−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −6,054−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −5,992−100.0% | Sold out |
| Evergreen Capital Management LLC | 0 | $0 | 0.00% | −5,945−100.0% | Sold out |
| Qsemble Capital Management, LP | 0 | $0 | 0.00% | −5,606−100.0% | Sold out |
| Tarbox Family Office, Inc. | 0 | $0 | 0.00% | −5,601−100.0% | Sold out |
| Roundview Capital LLC | 0 | $0 | 0.00% | −5,594−100.0% | Sold out |
| Avantax Advisory Services, Inc. | 0 | $0 | 0.00% | −5,589−100.0% | Sold out |
| Arcadia Investment Management Corp | 0 | $0 | 0.00% | −3,584−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −2,098−100.0% | Sold out |
| Venturi Wealth Management, LLC | 0 | $0 | 0.00% | −2,059−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −899−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −272−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −270−100.0% | Sold out |
| MCF Advisors LLC | 0 | $0 | 0.00% | −223−100.0% | Sold out |
| Umb Bank N A | 0 | $0 | 0.00% | −138−100.0% | Sold out |
| Johnson Financial Group, Inc. | 0 | $0 | 0.00% | −132−100.0% | Sold out |
| Whittier Trust Co | 0 | $0 | 0.00% | −115−100.0% | Sold out |
| LGT Financial Advisors LLC | 0 | $0 | 0.00% | −89−100.0% | Sold out |
| Avalon Trust Co | 0 | $0 | 0.00% | −88−100.0% | Sold out |
| Cohen & Steers, Inc. | 0 | $0 | 0.00% | −67−100.0% | Sold out |
| Transce3nd, LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Whipplewood Advisors, LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Bruce G. Allen Investments, LLC | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Elequin Capital LP | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| RiverPark Advisors, LLC | 0 | $0 | 0.00% | −217−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |
| AlphaCentric Advisors LLC | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |